Youth Risk Behavior Surveillance — United States, 2017

Supplementary Tables 133-158: Sexual Behaviors Related to Unintended Pregnancy and Sexually Transmitted Infections, Including HIV Infection

TABLE 133. Percentage of high school students who ever had sexual intercourse, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts* — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^†	%	CI	%	CI
Total	37.7	(34.3–41.2)	41.4	(38.6–44.3)	39.5	(36.8–42.4)
Race/Ethnicity
White^§	38.7	(34.4–43.2)	38.5	(35.5–41.6)	38.6	(35.4–41.9)
Black^§	39.4	(34.6–44.4)	52.7	(46.8–58.5)	45.8	(41.3–50.3)
Hispanic	37.9	(33.0–43.0)	44.1	(39.4–48.9)	41.1	(36.5–45.9)
Grade
9	17.2	(14.2–20.7)	23.3	(19.9–27.2)	20.4	(17.8–23.2)
10	34.4	(30.2–38.8)	38.0	(34.1–41.9)	36.2	(32.9–39.5)
11	45.8	(41.4–50.3)	48.8	(45.1–52.5)	47.3	(44.1–50.6)
12	55.8	(51.0–60.5)	58.9	(54.5–63.2)	57.3	(53.1–61.4)
Sexual identity
Heterosexual (straight)	36.3	(32.6–40.1)	41.6	(38.6–44.7)	39.1	(36.1–42.2)
Gay, lesbian, or bisexual	50.1	(44.3–55.8)	42.5	(35.2–50.2)	48.4	(43.9–52.9)
Not sure	25.7	(19.0–33.8)	30.8	(21.7–41.7)	28.4	(22.2–35.5)
Sex of sexual contacts
Opposite sex only	76.6	(72.2–80.5)	79.6	(76.9–82.0)	78.2	(75.1–81.0)
Same sex only or both sexes	74.0	(67.7–79.4)	76.1	(69.5–81.6)	74.5	(69.9–78.7)

* Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^† 95% confidence interval.
^§ Non-Hispanic.

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**TABLE 134. Percentage of high school students who ever had sexual intercourse, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017**
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Same sex only or both sexes
	%	CI^†	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	38.7	(32.9–44.9)	35.3	(30.3–40.6)	36.9	(32.7–41.3)	—^§	—	—	—	—	—	—	—	—	—
Arizona	32.3	(27.3–37.8)	35.8	(31.2–40.7)	34.0	(29.8–38.5)	32.7	(28.9–36.8)	46.3	(35.7–57.3)	33.2	(18.9–51.5)	—	—	—	—
Arkansas	43.5	(36.8–50.5)	44.8	(36.4–53.6)	44.2	(38.6–49.9)	41.9	(36.6–47.5)	68.1	(55.4–78.5)	14.9	(5.2–35.7)	83.8	(78.9–87.7)	82.0	(61.7–92.8)
California	27.9	(23.1–33.3)	36.6	(30.7–42.9)	32.3	(28.1–36.8)	32.3	(28.0–36.8)	39.5	(29.1–51.0)	12.3	(4.0–32.3)	71.0	(66.1–75.4)	59.9	(49.5–69.4)
Colorado	32.9	(25.9–40.8)	33.8	(28.3–39.7)	33.4	(28.4–38.8)	32.9	(28.0–38.2)	41.8	(32.0–52.4)	23.8	(12.8–39.9)	—	—	—	—
Connecticut	32.4	(28.8–36.2)	34.3	(29.9–39.0)	33.3	(30.4–36.4)	32.3	(29.0–35.8)	41.2	(35.1–47.5)	28.6	(20.6–38.2)	66.7	(61.1–71.8)	73.0	(66.1–78.8)
Delaware	43.9	(38.9–48.9)	46.9	(42.6–51.2)	45.4	(41.5–49.4)	45.1	(40.9–49.3)	49.5	(42.1–57.0)	29.3	(18.1–43.5)	79.3	(75.7–82.4)	71.8	(63.0–79.2)
Florida	34.4	(32.3–36.6)	42.0	(39.3–44.7)	38.1	(36.0–40.2)	37.1	(34.9–39.3)	48.4	(44.9–51.9)	32.6	(24.5–41.8)	78.4	(76.0–80.6)	71.3	(65.9–76.2)
Hawaii	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Idaho	34.8	(31.2–38.6)	35.5	(30.5–40.7)	35.1	(31.3–39.0)	—	—	—	—	—	—	—	—	—	—
Illinois	37.8	(34.9–40.8)	38.4	(32.2–45.0)	38.0	(33.7–42.5)	37.4	(33.0–42.0)	54.2	(43.5–64.5)	22.6	(15.0–32.4)	76.8	(71.2–81.6)	80.6	(72.2–86.9)
Iowa	45.7	(40.2–51.4)	40.2	(32.2–48.8)	43.1	(38.9–47.4)	41.1	(37.0–45.4)	60.5	(44.7–74.4)	49.6	(26.0–73.3)	80.3	(75.5–84.3)	85.0	(67.7–93.9)
Kansas	35.1	(31.0–39.4)	35.8	(30.3–41.8)	35.4	(31.2–39.9)	—	—	—	—	—	—	—	—	—	—
Kentucky	36.5	(31.1–42.2)	40.3	(33.5–47.5)	38.4	(33.2–44.0)	38.3	(32.7–44.1)	44.9	(36.3–53.9)	29.6	(18.6–43.6)	77.2	(71.2–82.3)	74.5	(63.8–82.8)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	40.0	(37.2–42.8)	37.9	(35.5–40.3)	39.0	(36.7–41.3)	38.6	(36.2–41.1)	46.6	(42.7–50.6)	25.9	(20.4–32.2)	74.3	(72.0–76.5)	73.8	(68.8–78.2)
Maryland	29.7	(28.4–31.0)	33.9	(32.8–35.1)	31.8	(30.7–32.8)	30.8	(29.7–31.9)	41.8	(39.5–44.1)	22.1	(19.8–24.7)	—	—	—	—
Massachusetts	34.9	(30.7–39.3)	35.8	(31.7–40.0)	35.3	(31.8–39.1)	35.1	(31.7–38.7)	44.9	(37.3–52.8)	20.8	(12.8–32.1)	73.8	(69.7–77.6)	72.3	(64.5–78.9)
Michigan	39.9	(34.0–46.1)	36.9	(30.0–44.3)	38.3	(32.7–44.3)	37.5	(31.7–43.7)	50.2	(42.8–57.7)	32.8	(23.5–43.8)	73.7	(66.0–80.1)	75.0	(63.5–83.8)
Missouri	42.4	(35.2–50.0)	41.2	(34.9–47.8)	41.9	(36.0–48.0)	—	—	—	—	—	—	—	—	—	—
Montana	44.8	(42.0–47.6)	41.6	(38.7–44.5)	43.2	(40.8–45.6)	—	—	—	—	—	—	—	—	—	—
Nebraska	28.2	(23.1–33.8)	30.0	(24.4–36.2)	29.1	(24.8–33.8)	28.7	(24.5–33.4)	43.3	(29.7–57.9)	15.0	(6.6–30.8)	69.1	(60.8–76.3)	81.3	(68.6–89.7)
Nevada	35.6	(29.6–42.0)	36.9	(32.0–42.0)	36.2	(32.0–40.7)	34.7	(30.2–39.6)	45.3	(37.0–54.0)	28.0	(16.8–42.8)	78.5	(74.6–82.0)	73.1	(60.6–82.7)
New Hampshire	37.5	(35.3–39.7)	40.0	(37.7–42.4)	38.9	(37.0–40.8)	38.6	(36.5–40.7)	46.1	(42.4–49.8)	27.9	(22.9–33.4)	72.6	(70.6–74.5)	73.9	(69.3–77.9)
New Mexico	36.4	(31.8–41.3)	40.9	(36.6–45.4)	38.6	(34.6–42.8)	37.9	(34.3–41.7)	48.1	(39.9–56.4)	30.7	(21.5–41.8)	81.1	(78.0–83.9)	78.1	(72.1–83.1)
New York	31.6	(28.4–35.1)	29.4	(25.5–33.7)	30.6	(27.4–34.0)	30.3	(26.8–33.9)	39.2	(33.5–45.3)	21.8	(17.6–26.6)	75.8	(72.3–78.9)	67.9	(59.2–75.5)
North Carolina	36.2	(31.3–41.5)	39.3	(33.0–45.8)	37.7	(32.7–43.0)	36.4	(31.5–41.5)	51.8	(41.9–61.6)	33.5	(22.2–47.0)	72.3	(67.1–77.0)	72.4	(64.4–79.2)
North Dakota	36.6	(32.1–41.3)	36.6	(32.4–41.1)	36.6	(32.8–40.6)	36.6	(32.6–40.8)	45.8	(37.7–54.0)	16.3	(9.8–25.9)	—	—	—	—
Oklahoma	42.8	(37.5–48.3)	42.9	(38.9–47.0)	42.8	(38.9–46.8)	41.8	(37.5–46.3)	58.3	(50.0–66.1)	41.4	(21.7–64.4)	77.4	(72.9–81.5)	69.6	(52.6–82.5)
Pennsylvania	35.8	(32.5–39.3)	39.5	(35.8–43.3)	37.6	(34.6–40.8)	37.4	(34.5–40.3)	44.8	(34.9–55.2)	20.9	(13.0–31.8)	74.3	(70.3–78.0)	72.3	(61.5–81.1)
Rhode Island	33.3	(26.0–41.4)	38.1	(31.2–45.5)	35.7	(29.9–42.0)	35.4	(29.2–42.1)	43.4	(30.5–57.4)	27.0	(13.6–46.7)	73.4	(65.5–80.0)	75.9	(65.9–83.7)
South Carolina	37.1	(31.6–43.1)	41.1	(35.3–47.2)	39.1	(34.2–44.2)	37.5	(32.3–42.9)	50.3	(39.1–61.6)	37.8	(24.2–53.6)	74.8	(69.3–79.6)	70.9	(58.0–81.2)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	38.3	(32.2–44.7)	40.3	(35.9–44.9)	39.2	(34.7–44.0)	38.5	(33.6–43.7)	48.5	(41.8–55.2)	30.9	(19.0–45.9)	80.7	(77.4–83.6)	79.8	(73.6–84.9)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	44.2	(39.0–49.5)	47.7	(41.8–53.7)	45.9	(41.4–50.5)	45.8	(40.8–50.9)	51.1	(40.6–61.5)	31.7	(17.9–49.6)	81.8	(77.7–85.2)	78.2	(64.9–87.4)
Wisconsin	32.1	(28.2–36.4)	34.9	(30.7–39.2)	33.6	(30.3–37.0)	33.7	(30.0–37.6)	34.9	(28.4–42.0)	25.7	(14.9–40.5)	67.9	(63.6–72.0)	67.7	(52.3–80.1)
Median	36.4		38.1		37.7		37.2		46.2		27.9		75.3		73.4
Range	27.9–45.7		29.4–47.7		29.1–45.9		28.7–45.8		34.9–68.1		12.3–49.6		66.7–83.8		59.9–85.0
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	38.3	(33.9–42.9)	48.1	(42.6–53.7)	43.2	(39.3–47.2)	43.1	(39.1–47.2)	51.0	(41.7–60.2)	30.8	(19.2–45.4)	82.4	(77.9–86.1)	78.7	(69.9–85.4)
Broward County, FL	32.3	(25.3–40.2)	43.0	(34.2–52.2)	37.4	(31.0–44.4)	38.1	(31.3–45.4)	43.3	(28.8–58.9)	19.1	(7.1–42.1)	72.2	(63.3–79.6)	64.5	(46.3–79.3)
Chicago, IL	35.2	(30.2–40.6)	43.8	(38.5–49.2)	39.0	(34.8–43.4)	38.8	(33.9–43.9)	46.5	(36.8–56.4)	21.9	(12.7–35.1)	81.1	(75.8–85.5)	68.0	(56.9–77.4)
Cleveland, OH	45.6	(40.3–50.9)	52.9	(47.4–58.4)	49.2	(45.1–53.4)	49.1	(44.6–53.6)	56.2	(46.7–65.2)	37.1	(23.0–53.9)	85.6	(82.2–88.4)	78.6	(69.2–85.8)
DeKalb County, GA	30.1	(25.4–35.2)	44.0	(39.6–48.5)	36.6	(32.8–40.7)	34.5	(30.6–38.7)	57.6	(48.1–66.5)	28.8	(18.8–41.4)	73.3	(68.9–77.3)	70.3	(60.1–78.9)
Detroit, MI	31.4	(24.6–39.1)	49.8	(42.5–57.1)	39.3	(34.0–44.9)	38.1	(32.7–43.8)	50.8	(38.9–62.6)	23.0	(9.9–44.7)	78.6	(72.5–83.6)	67.9	(57.9–76.5)
District of Columbia	37.5	(35.8–39.2)	54.6	(52.7–56.6)	45.6	(44.3–46.9)	45.6	(44.2–47.1)	50.4	(46.8–53.9)	30.5	(25.0–36.5)	84.3	(82.9–85.6)	73.4	(69.6–76.9)
Duval County, FL	32.7	(29.3–36.3)	41.9	(37.8–46.2)	37.1	(34.0–40.3)	35.0	(31.7–38.4)	52.5	(46.3–58.7)	25.3	(16.7–36.3)	66.6	(62.9–70.1)	67.0	(61.1–72.5)
Ft. Worth, TX	33.3	(30.7–36.0)	42.4	(39.4–45.5)	37.7	(35.6–39.8)	36.9	(34.7–39.2)	49.7	(43.1–56.2)	30.7	(21.9–41.1)	83.5	(81.1–85.6)	80.9	(73.9–86.4)
Houston, TX	30.6	(27.4–34.0)	39.8	(36.2–43.4)	35.0	(32.3–37.9)	33.5	(30.5–36.6)	48.8	(42.5–55.1)	28.7	(20.2–39.0)	81.9	(78.7–84.8)	73.0	(65.9–79.2)
Los Angeles, CA	25.5	(20.3–31.5)	34.3	(28.1–41.1)	30.0	(25.0–35.5)	29.4	(24.4–34.9)	49.4	(34.1–64.8)	14.4	(8.2–24.1)	67.6	(62.3–72.5)	73.4	(55.4–85.9)
Miami-Dade County, FL	37.7	(33.6–42.1)	43.9	(38.5–49.6)	40.8	(36.7–45.0)	40.2	(35.8–44.8)	51.4	(43.3–59.4)	23.9	(13.1–39.6)	79.5	(75.3–83.1)	68.5	(60.1–75.9)
New York City, NY	23.4	(20.5–26.6)	30.5	(26.4–35.1)	26.8	(23.6–30.2)	26.0	(22.4–29.9)	40.2	(35.7–44.9)	21.0	(18.3–24.0)	75.6	(71.0–79.7)	63.3	(56.5–69.5)
Oakland, CA	24.0	(19.7–28.7)	37.4	(32.6–42.4)	30.7	(26.8–34.9)	30.7	(26.7–35.0)	37.8	(29.6–46.8)	17.2	(9.7–28.6)	76.0	(71.1–80.3)	50.1	(38.9–61.2)
Orange County, FL	29.5	(24.7–34.7)	36.6	(31.0–42.7)	33.0	(28.7–37.6)	32.3	(27.7–37.3)	45.5	(35.5–55.8)	16.3	(6.8–34.3)	71.9	(65.5–77.5)	69.4	(57.8–79.0)
Palm Beach County, FL	32.1	(27.6–37.0)	38.3	(34.2–42.7)	35.2	(31.7–38.9)	33.9	(30.0–38.1)	44.1	(37.0–51.4)	38.1	(25.7–52.2)	74.2	(70.2–77.9)	69.6	(60.9–77.1)
Philadelphia, PA	35.7	(28.7–43.4)	45.9	(37.3–54.7)	40.4	(33.6–47.6)	39.6	(32.3–47.3)	48.4	(38.4–58.5)	26.3	(15.0–41.8)	82.2	(76.0–87.1)	73.7	(61.4–83.1)
San Diego, CA	28.6	(24.6–32.9)	33.4	(29.8–37.2)	31.0	(27.7–34.4)	31.1	(27.5–34.9)	38.1	(30.9–46.0)	18.7	(12.1–27.6)	65.3	(60.8–69.6)	60.6	(50.6–69.8)
San Francisco, CA	18.2	(15.1–21.6)	25.4	(22.5–28.4)	21.7	(19.3–24.2)	21.5	(19.0–24.2)	29.4	(20.9–39.6)	10.0	(5.5–17.4)	71.0	(66.8–74.9)	56.4	(44.1–68.0)
Shelby County, TN	37.7	(32.7–42.9)	52.8	(48.7–56.9)	44.4	(40.5–48.4)	44.3	(40.3–48.3)	49.8	(41.0–58.6)	18.2	(7.1–39.4)	80.7	(75.1–85.3)	74.0	(60.4–84.2)
Median	32.2		42.7		37.2		36.0		49.1		23.4		77.3		69.5
Range	18.2–45.6		25.4–54.6		21.7–49.2		21.5–49.1		29.4–57.6		10.0–38.1		65.3–85.6		50.1–80.9

* Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^† 95% confidence interval.
^§ Not available.

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TABLE 135. **Percentage of high school students who had sexual intercourse for the first time before age 13 years, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts*** **— United States, Youth Risk Behavior Survey, 2017**
Category	Sex				Total
	Female		Male		Total
	%	CI^†	%	CI	%	CI
Total	2.0	(1.6–2.5)	4.8	(4.0–5.7)	3.4	(3.0–3.9)
Race/Ethnicity
White^§	1.8	(1.2–2.5)	2.3	(1.7–3.2)	2.1	(1.7–2.6)
Black^§	2.5	(1.4–4.5)	12.8	(9.7–16.7)	7.5	(5.9–9.5)
Hispanic	1.9	(1.2–3.1)	6.0	(4.9–7.2)	4.0	(3.3–4.7)
Grade
9	2.2	(1.4–3.5)	5.7	(4.3–7.7)	4.1	(3.2–5.2)
10	2.2	(1.4–3.4)	4.6	(3.4–6.1)	3.4	(2.6–4.4)
11	1.2	(0.6–2.4)	3.5	(2.6–4.5)	2.3	(1.8–2.9)
12	1.9	(1.3–2.9)	5.1	(3.9–6.6)	3.5	(2.8–4.4)
Sexual identity
Heterosexual (straight)	1.3	(0.9–1.8)	4.6	(3.8–5.6)	3.0	(2.5–3.7)
Gay, lesbian, or bisexual	5.2	(3.6–7.4)	8.1	(4.5–14.1)	6.1	(4.6–8.0)
Not sure	2.5	(1.2–5.3)	4.6	(2.1–9.8)	4.1	(2.5–6.4)
Sex of sexual contacts
Opposite sex only	2.8	(2.0–4.0)	8.4	(7.0–10.0)	5.8	(4.9–7.0)
Same sex only or both sexes	8.2	(6.1–11.1)	17.5	(10.3–28.0)	10.5	(8.0–13.7)

* Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^† 95% confidence interval.
^§ Non-Hispanic.

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TABLE 136. Percentage of high school students who had sexual intercourse for the first time before age 13 years, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Same sex only or both sexes
	%	CI^†	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	2.8	(1.6–4.9)	4.6	(2.7–7.5)	3.7	(2.5–5.6)	—^§	—	—	—	—	—	—	—	—	—
Arizona	1.1	(0.5–2.4)	4.3	(1.9–9.1)	2.7	(1.4–5.1)	2.4	(1.3–4.7)	5.4	(2.3–12.2)	0.3	(0.0–2.8)	—	—	—	—
Arkansas	4.5	(2.7–7.6)	5.3	(3.1–9.0)	4.9	(3.3–7.2)	3.3	(1.9–5.9)	17.9	(10.9–28.0)	5.6	(1.2–23.0)	6.6	(3.8–11.3)	17.8	(9.3–31.5)
California	1.0	(0.4–2.3)	3.0	(1.9–4.9)	2.1	(1.3–3.2)	1.9	(1.2–3.0)	4.0	(1.5–10.5)	0.9	(0.1–7.4)	3.3	(1.9–5.6)	7.8	(3.7–15.8)
Colorado	2.4	(1.3–4.4)	3.4	(2.2–5.3)	2.9	(2.0–4.2)	2.6	(1.5–4.4)	6.4	(2.8–14.3)	1.9	(0.2–15.2)	—	—	—	—
Connecticut	1.5	(0.7–3.2)	4.2	(3.3–5.3)	2.9	(2.3–3.7)	2.7	(2.1–3.5)	2.7	(1.4–5.3)	6.9	(2.7–16.5)	4.7	(3.6–6.1)	10.5	(6.9–15.7)
Delaware	1.7	(1.1–2.7)	5.4	(4.0–7.2)	3.6	(2.8–4.6)	3.3	(2.4–4.6)	5.5	(3.2–9.3)	5.0	(2.0–12.2)	5.4	(3.9–7.3)	10.2	(6.8–15.1)
Florida	2.0	(1.5–2.6)	8.0	(6.8–9.5)	5.0	(4.3–5.7)	4.4	(3.6–5.2)	7.4	(5.1–10.6)	10.2	(6.3–16.1)	9.0	(7.5–10.8)	15.5	(11.7–20.3)
Hawaii	2.2	(1.6–3.0)	4.3	(3.4–5.5)	3.4	(2.8–4.0)	2.7	(2.1–3.5)	6.5	(4.3–9.8)	4.7	(2.3–9.5)	7.0	(5.3–9.1)	12.7	(8.5–18.7)
Idaho	2.8	(1.7–4.7)	3.4	(2.3–5.1)	3.1	(2.1–4.5)	—	—	—	—	—	—	—	—	—	—
Illinois	2.1	(1.3–3.5)	5.4	(3.8–7.5)	3.9	(3.0–5.0)	2.7	(2.0–3.7)	10.2	(6.9–14.7)	5.6	(2.5–12.1)	5.3	(4.0–7.1)	18.5	(13.8–24.4)
Iowa	2.1	(1.2–3.5)	2.2	(1.1–4.6)	2.4	(1.4–3.9)	1.4	(0.8–2.6)	7.6	(4.1–13.6)	8.7	(1.8–33.4)	2.8	(1.6–4.9)	9.2	(3.7–21.2)
Kansas	2.3	(1.4–4.0)	3.5	(2.4–5.1)	2.9	(2.0–4.2)	—	—	—	—	—	—	—	—	—	—
Kentucky	1.8	(1.1–3.1)	5.3	(3.7–7.5)	3.7	(2.7–5.0)	2.8	(2.2–3.6)	9.2	(4.3–18.5)	9.4	(4.8–17.6)	6.1	(4.7–8.0)	13.9	(7.5–24.4)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	2.4	(1.8–3.2)	3.0	(2.5–3.7)	2.8	(2.3–3.3)	2.0	(1.6–2.4)	7.1	(5.6–8.9)	7.9	(5.8–10.6)	3.8	(3.2–4.5)	12.9	(10.1–16.3)
Maryland	2.0	(1.8–2.2)	6.5	(6.0–7.1)	4.3	(4.0–4.6)	3.4	(3.1–3.7)	7.9	(6.9–8.9)	7.1	(5.7–8.7)	—	—	—	—
Massachusetts	1.3	(0.7–2.3)	3.4	(2.3–5.1)	2.4	(1.6–3.4)	2.1	(1.4–3.0)	5.1	(2.7–9.2)	2.6	(0.7–9.1)	4.1	(2.7–6.1)	7.7	(4.2–13.5)
Michigan	1.7	(1.2–2.5)	4.9	(2.6–9.0)	3.3	(2.0–5.5)	2.8	(1.4–5.3)	7.8	(4.6–12.8)	6.2	(2.7–13.2)	5.9	(3.2–10.7)	8.2	(3.3–19.1)
Missouri	1.2	(0.7–2.3)	3.6	(1.8–7.0)	2.5	(1.3–4.6)	—	—	—	—	—	—	—	—	—	—
Montana	2.3	(1.7–3.0)	3.4	(2.6–4.4)	2.9	(2.3–3.6)	—	—	—	—	—	—	—	—	—	—
Nebraska	2.2	(1.2–4.0)	3.3	(1.9–5.6)	2.8	(1.9–4.2)	2.3	(1.4–3.7)	8.2	(4.2–15.5)	4.0	(0.9–15.1)	5.7	(3.5–9.2)	11.8	(6.1–21.7)
Nevada	3.1	(1.9–5.0)	4.3	(2.9–6.3)	3.7	(2.7–5.0)	3.0	(2.1–4.2)	6.2	(3.6–10.4)	8.2	(3.9–16.4)	6.1	(4.7–7.8)	14.3	(7.3–26.0)
New Hampshire	1.8	(1.4–2.2)	2.7	(2.3–3.3)	2.4	(2.1–2.8)	1.7	(1.4–2.0)	5.0	(3.8–6.6)	9.1	(6.4–12.7)	2.9	(2.4–3.4)	15.4	(12.2–19.3)
New Mexico	2.5	(1.5–4.0)	4.8	(3.5–6.7)	3.7	(2.8–4.9)	3.0	(2.2–4.0)	7.5	(5.0–11.1)	5.7	(2.5–12.1)	6.4	(4.8–8.4)	14.4	(11.4–17.9)
New York	1.8	(1.3–2.6)	3.9	(2.8–5.4)	2.8	(2.2–3.7)	2.3	(1.7–3.2)	4.2	(2.5–6.8)	5.7	(3.1–10.2)	5.8	(4.2–7.9)	11.4	(8.2–15.6)
North Carolina	2.2	(1.6–3.1)	5.6	(4.5–7.0)	4.0	(3.3–4.8)	3.3	(2.7–4.0)	7.5	(4.1–13.4)	9.0	(4.1–18.5)	6.6	(5.2–8.3)	11.7	(6.5–20.1)
North Dakota	1.7	(1.0–2.8)	3.7	(2.6–5.2)	2.8	(2.0–3.9)	2.0	(1.4–2.8)	11.6	(6.3–20.2)	1.3	(0.2–8.4)	—	—	—	—
Oklahoma	3.1	(2.1–4.7)	5.3	(3.7–7.5)	4.2	(3.2–5.6)	4.1	(3.0–5.5)	4.9	(2.6–9.1)	5.9	(1.0–28.1)	7.6	(5.6–10.2)	7.6	(3.2–17.1)
Pennsylvania	2.0	(1.2–3.4)	5.2	(3.8–7.2)	3.7	(2.8–4.9)	2.8	(2.1–3.9)	9.1	(5.4–14.8)	5.0	(1.9–12.4)	5.6	(3.9–7.8)	14.3	(8.7–22.6)
Rhode Island	2.6	(1.2–5.5)	5.6	(4.1–7.6)	4.1	(3.0–5.6)	3.3	(2.2–4.9)	7.0	(3.5–13.2)	12.7	(6.1–24.6)	7.4	(4.9–11.2)	11.9	(6.3–21.2)
South Carolina	3.5	(2.4–5.0)	8.4	(6.0–11.5)	6.0	(4.9–7.3)	4.8	(3.6–6.3)	10.4	(5.9–17.7)	8.6	(2.2–28.7)	9.7	(7.7–12.2)	14.2	(7.2–26.1)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	1.5	(0.8–2.9)	5.1	(3.4–7.6)	3.3	(2.2–4.9)	2.9	(1.9–4.6)	6.1	(3.6–10.3)	1.9	(0.4–8.5)	6.3	(4.0–9.7)	8.8	(5.2–14.5)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	2.1	(1.8–2.4)	4.1	(3.7–4.5)	3.2	(2.9–3.4)	2.5	(2.3–2.8)	6.8	(5.8–8.0)	6.4	(4.9–8.3)	4.3	(3.9–4.8)	13.0	(11.2–15.0)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	2.6	(1.6–4.3)	4.7	(3.2–6.9)	3.8	(2.8–5.1)	3.5	(2.4–5.1)	6.9	(2.8–15.7)	5.1	(1.5–15.4)	5.6	(3.8–8.1)	13.5	(6.6–25.5)
Wisconsin	2.0	(1.1–3.4)	3.7	(2.5–5.4)	2.9	(2.0–4.0)	2.1	(1.5–3.1)	5.2	(3.1–8.7)	6.1	(2.0–17.3)	4.1	(2.8–6.1)	13.5	(7.5–23.1)
Median	2.1		4.3		3.3		2.7		6.9		5.8		5.8		12.8
Range	1.0–4.5		2.2–8.4		2.1–6.0		1.4–4.8		2.7–17.9		0.3–12.7		2.8–9.7		7.6–18.5
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	1.8	(0.9–3.3)	11.3	(8.8–14.3)	6.6	(5.3–8.3)	6.4	(4.9–8.2)	7.9	(4.1–14.6)	5.2	(1.6–15.9)	11.2	(8.5–14.6)	15.3	(8.7–25.5)
Broward County, FL	0.6	(0.2–2.2)	8.1	(5.2–12.3)	4.2	(2.6–6.7)	3.5	(2.3–5.4)	9.5	(2.9–26.9)	0.6	(0.1–4.4)	5.4	(3.3–8.8)	14.8	(5.7–33.4)
Chicago, IL	2.3	(1.3–4.0)	9.2	(7.4–11.4)	5.4	(4.6–6.4)	5.1	(4.1–6.2)	7.1	(3.4–14.2)	5.4	(2.3–12.4)	9.7	(7.9–12.0)	15.8	(9.3–25.6)
Cleveland, OH	3.0	(1.8–4.8)	15.4	(12.2–19.2)	9.0	(7.3–11.1)	9.9	(7.9–12.4)	5.3	(2.4–11.2)	3.7	(1.1–11.4)	15.7	(12.3–19.8)	13.6	(8.2–21.6)
DeKalb County, GA	1.5	(0.8–2.7)	9.3	(7.4–11.6)	5.2	(4.2–6.5)	5.0	(3.9–6.3)	8.3	(4.8–14.0)	3.9	(1.0–14.0)	9.8	(7.6–12.5)	11.3	(6.0–20.3)
Detroit, MI	1.7	(0.9–3.3)	8.9	(6.2–12.6)	4.8	(3.4–6.7)	4.6	(3.3–6.5)	7.1	(3.5–13.8)	0.0	—	9.2	(6.4–13.0)	11.1	(6.0–19.5)
District of Columbia	3.2	(2.6–3.9)	15.5	(14.0–17.1)	8.9	(8.1–9.7)	9.0	(8.2–10.0)	7.8	(6.1–10.1)	8.9	(5.8–13.5)	15.5	(13.9–17.2)	15.9	(13.0–19.4)
Duval County, FL	3.1	(2.1–4.5)	7.3	(5.5–9.7)	5.3	(4.3–6.4)	4.3	(3.2–5.7)	9.1	(6.4–12.7)	7.4	(3.9–13.6)	6.8	(5.0–9.2)	15.5	(11.7–20.1)
Ft. Worth, TX	2.9	(2.0–4.1)	6.6	(5.1–8.5)	4.7	(3.8–5.7)	3.9	(3.1–4.9)	10.4	(6.8–15.6)	5.7	(2.3–13.4)	8.8	(7.0–11.1)	18.6	(12.2–27.4)
Houston, TX	2.7	(1.8–4.0)	5.6	(4.1–7.4)	4.2	(3.3–5.3)	3.3	(2.4–4.5)	7.6	(5.1–11.2)	7.1	(2.7–17.3)	8.5	(6.6–11.1)	10.9	(6.6–17.6)
Los Angeles, CA	2.0	(1.0–3.6)	5.3	(3.4–8.2)	3.8	(2.6–5.6)	3.7	(2.5–5.6)	7.4	(4.0–13.5)	0.0	—	6.8	(4.3–10.6)	18.6	(10.9–30.0)
Miami-Dade County, FL	1.9	(1.2–2.9)	7.2	(5.5–9.5)	4.5	(3.5–5.8)	4.3	(3.2–5.6)	6.4	(3.7–11.1)	10.2	(3.8–24.7)	8.4	(6.4–10.9)	9.2	(5.2–15.8)
New York City, NY	1.4	(1.0–2.0)	7.0	(5.3–9.2)	4.1	(3.2–5.3)	3.7	(2.7–5.0)	6.5	(3.8–10.8)	4.3	(3.0–6.3)	10.4	(8.1–13.3)	11.1	(7.0–17.1)
Oakland, CA	2.2	(1.3–3.6)	7.4	(5.3–10.4)	4.9	(3.7–6.5)	5.0	(3.6–6.8)	5.3	(2.6–10.4)	3.2	(0.7–12.9)	11.6	(8.3–16.0)	10.6	(5.1–20.6)
Orange County, FL	1.8	(1.0–3.2)	6.5	(4.5–9.3)	4.2	(3.1–5.7)	3.9	(2.7–5.6)	7.4	(3.4–15.3)	1.8	(0.2–12.1)	8.4	(5.9–11.9)	12.0	(6.6–20.8)
Palm Beach County, FL	1.3	(0.7–2.5)	6.4	(4.7–8.8)	3.9	(2.9–5.2)	3.5	(2.5–4.7)	3.6	(1.5–8.1)	10.9	(5.6–20.2)	7.4	(5.3–10.2)	12.4	(7.0–21.0)
Philadelphia, PA	2.2	(1.4–3.5)	9.0	(6.5–12.3)	5.5	(4.2–7.1)	5.2	(3.7–7.1)	6.0	(3.4–10.5)	10.3	(3.6–25.8)	10.5	(7.8–13.9)	9.1	(4.1–19.2)
San Diego, CA	1.5	(0.9–2.5)	3.9	(2.9–5.2)	2.7	(2.1–3.5)	2.7	(2.0–3.6)	3.2	(1.5–6.9)	2.7	(0.7–9.9)	4.8	(3.5–6.6)	9.0	(5.0–15.6)
San Francisco, CA	1.8	(1.1–2.9)	5.0	(3.7–6.6)	3.5	(2.7–4.4)	3.2	(2.4–4.2)	4.1	(2.0–8.1)	5.1	(2.0–12.1)	9.2	(6.8–12.3)	14.4	(7.4–26.2)
Shelby County, TN	1.5	(0.7–3.0)	14.9	(11.3–19.4)	7.6	(5.8–9.8)	7.1	(5.4–9.2)	6.7	(2.7–15.5)	1.1	(0.2–6.0)	13.6	(10.6–17.3)	10.3	(5.3–19.1)
Median	1.8		7.3		4.7		4.3		7.1		4.7		9.2		12.2
Range	0.6–3.2		3.9–15.5		2.7–9.0		2.7–9.9		3.2–10.4		0.0–10.9		4.8–15.7		9.0–18.6

* Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^† 95% confidence interval.
^§ Not available.

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TABLE 137. **Percentage of high school students who had sexual intercourse with four or more persons during their life, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts*** **— United States, Youth Risk Behavior Survey, 2017**
Category	Sex				Total
	Female		Male		Total
	%	CI^†	%	CI	%	CI
Total	7.9	(6.6–9.5)	11.6	(10.0–13.4)	9.7	(8.4–11.3)
Race/Ethnicity
White^§	8.5	(6.7–10.7)	8.6	(7.1–10.5)	8.6	(7.1–10.3)
Black^§	7.0	(5.1–9.7)	23.2	(18.5–28.7)	14.8	(11.7–18.5)
Hispanic	6.8	(4.9–9.4)	12.0	(9.9–14.5)	9.4	(7.5–11.8)
Grade
9	1.8	(1.1–3.0)	6.0	(4.6–7.9)	4.0	(3.0–5.3)
10	5.1	(3.8–6.7)	9.7	(7.6–12.2)	7.3	(5.8–9.2)
11	9.1	(7.0–11.7)	12.2	(10.3–14.4)	10.6	(8.8–12.6)
12	16.5	(13.8–19.5)	19.5	(16.2–23.3)	18.0	(15.5–20.8)
Sexual identity
Heterosexual (straight)	6.5	(5.5–7.8)	11.5	(9.8–13.5)	9.1	(7.9–10.5)
Gay, lesbian, or bisexual	15.0	(11.2–19.9)	13.5	(8.8–20.3)	14.7	(11.2–18.9)
Not sure	8.0	(3.6–16.7)	10.7	(5.8–18.8)	9.9	(5.8–16.3)
Sex of sexual contacts
Opposite sex only	12.5	(10.7–14.6)	22.1	(19.3–25.2)	17.7	(15.5–20.1)
Same sex only or both sexes	30.1	(23.2–38.0)	24.2	(16.8–33.6)	28.6	(22.1–36.2)

* Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^† 95% confidence interval.
^§ Non-Hispanic.

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TABLE 138. Percentage of high school students who had sexual intercourse with four or more persons during their life, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Same sex only or both sexes
	%	CI^†	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	10.3	(7.5–13.9)	10.5	(7.6–14.4)	10.4	(8.3–13.0)	—^§	—	—	—	—	—	—	—	—	—
Arizona	6.9	(5.1–9.2)	9.3	(6.8–12.6)	8.1	(6.2–10.5)	7.9	(6.2–10.2)	11.0	(6.3–18.7)	0.3	(0.0–2.8)	—	—	—	—
Arkansas	10.3	(7.3–14.4)	14.8	(9.2–23.0)	12.7	(8.9–17.9)	12.3	(8.4–17.8)	19.3	(11.6–30.4)	2.8	(0.3–20.5)	23.7	(16.8–32.5)	27.7	(16.2–43.2)
California	4.6	(2.6–8.1)	6.6	(4.9–8.8)	5.7	(4.0–8.0)	5.4	(3.7–7.8)	9.6	(4.2–20.6)	2.7	(0.3–19.6)	11.6	(8.8–15.1)	14.7	(7.3–27.3)
Colorado	6.6	(4.3–10.0)	7.7	(5.6–10.5)	7.1	(5.4–9.3)	6.8	(4.9–9.6)	9.0	(4.8–16.5)	11.8	(5.6–23.1)	—	—	—	—
Connecticut	5.3	(3.8–7.4)	8.1	(6.6–9.9)	6.7	(5.6–8.1)	6.0	(4.8–7.5)	10.2	(6.2–16.4)	8.1	(3.2–18.9)	12.4	(10.2–15.1)	17.9	(12.2–25.3)
Delaware	8.4	(6.1–11.5)	16.9	(13.7–20.6)	12.4	(10.2–15.1)	12.1	(9.6–15.2)	15.1	(10.6–21.1)	10.6	(3.4–28.5)	20.6	(17.2–24.5)	30.1	(22.3–39.2)
Florida	5.8	(4.7–7.1)	14.1	(12.4–16.1)	9.9	(8.8–11.1)	9.4	(8.4–10.5)	12.7	(10.0–16.1)	13.0	(9.0–18.4)	19.1	(17.4–21.1)	25.1	(19.6–31.6)
Hawaii	4.6	(3.7–5.8)	6.2	(5.2–7.5)	5.4	(4.7–6.3)	5.0	(4.3–5.8)	8.2	(5.6–12.0)	4.1	(2.2–7.3)	13.3	(11.6–15.2)	19.0	(14.5–24.6)
Idaho	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	6.8	(5.2–8.9)	11.5	(9.3–14.1)	9.0	(7.9–10.3)	8.4	(7.3–9.7)	14.7	(9.4–22.2)	7.7	(3.8–14.9)	16.2	(14.1–18.5)	29.9	(23.3–37.6)
Iowa	9.3	(4.7–17.5)	7.4	(5.5–9.7)	8.5	(5.8–12.3)	6.9	(4.8–9.7)	20.3	(10.9–34.7)	17.0	(4.7–46.1)	14.0	(9.2–20.8)	27.6	(16.9–41.7)
Kansas	8.1	(6.0–10.9)	6.6	(5.3–8.3)	7.4	(5.9–9.3)	—	—	—	—	—	—	—	—	—	—
Kentucky	7.6	(5.0–11.4)	11.7	(8.5–15.8)	9.6	(7.1–12.9)	9.2	(6.8–12.2)	14.5	(7.8–25.1)	7.3	(2.4–20.6)	18.6	(14.7–23.2)	23.7	(15.3–34.8)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	7.8	(6.6–9.1)	7.9	(7.0–9.0)	7.9	(7.0–8.9)	7.3	(6.3–8.3)	12.1	(9.8–14.7)	8.8	(6.3–12.2)	12.9	(11.4–14.6)	26.7	(22.4–31.5)
Maryland	5.6	(5.2–6.0)	9.8	(9.2–10.5)	7.7	(7.3–8.1)	6.9	(6.5–7.4)	11.9	(10.7–13.1)	8.8	(7.2–10.8)	—	—	—	—
Massachusetts	5.3	(3.8–7.3)	8.1	(6.4–10.1)	6.7	(5.4–8.2)	6.4	(5.1–8.1)	10.0	(7.0–14.1)	2.9	(0.9–9.0)	13.0	(10.6–15.7)	18.6	(13.5–24.9)
Michigan	8.3	(5.8–11.7)	10.0	(6.1–16.0)	9.2	(6.7–12.4)	8.5	(5.7–12.4)	15.3	(9.1–24.5)	12.9	(7.0–22.6)	16.1	(11.6–22.0)	29.3	(19.7–41.3)
Missouri	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Montana	12.8	(11.2–14.5)	11.9	(10.3–13.8)	12.4	(11.0–13.9)	—	—	—	—	—	—	—	—	—	—
Nebraska	5.4	(3.5–8.3)	6.6	(4.1–10.3)	6.0	(4.2–8.5)	5.4	(3.7–7.9)	12.5	(6.1–23.8)	5.5	(1.9–15.1)	13.8	(9.9–18.9)	18.2	(8.6–34.6)
Nevada	8.2	(5.6–12.0)	11.4	(8.5–15.0)	9.8	(7.8–12.4)	9.5	(7.4–12.0)	12.2	(7.2–19.7)	8.7	(3.8–18.5)	20.1	(16.3–24.6)	26.5	(19.1–35.3)
New Hampshire	7.9	(6.9–8.9)	9.1	(8.0–10.4)	8.6	(7.8–9.5)	8.0	(7.1–8.9)	12.2	(10.1–14.8)	11.0	(8.0–14.8)	14.6	(13.2–16.0)	28.2	(24.1–32.7)
New Mexico	7.3	(5.2–10.2)	11.9	(9.5–14.9)	9.6	(7.6–12.1)	9.0	(7.3–10.9)	13.5	(8.8–20.1)	9.3	(4.4–18.4)	19.0	(16.2–22.1)	24.7	(18.0–32.8)
New York	5.6	(4.2–7.3)	7.0	(5.5–8.9)	6.4	(5.0–8.1)	6.0	(4.7–7.7)	8.4	(5.8–12.1)	6.2	(4.2–9.0)	14.0	(11.4–17.0)	21.0	(16.3–26.6)
North Carolina	6.4	(5.2–7.8)	11.4	(8.5–15.0)	8.9	(7.3–10.8)	8.0	(6.4–10.0)	13.7	(9.0–20.3)	14.4	(7.2–26.7)	15.5	(13.0–18.5)	24.0	(17.3–32.2)
North Dakota	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Oklahoma	9.5	(6.8–13.2)	13.2	(9.6–17.9)	11.4	(8.4–15.2)	11.3	(8.4–15.0)	14.6	(8.4–24.0)	8.1	(2.1–26.3)	20.0	(15.0–26.2)	24.4	(16.0–35.3)
Pennsylvania	6.6	(5.1–8.4)	11.0	(8.7–13.8)	8.8	(7.3–10.6)	8.3	(6.8–9.9)	13.5	(9.1–19.7)	4.5	(1.8–10.7)	16.0	(13.2–19.3)	24.9	(18.4–32.7)
Rhode Island	6.0	(3.8–9.2)	9.8	(5.7–16.2)	8.1	(5.8–11.1)	7.3	(4.9–10.5)	10.8	(6.1–18.4)	16.4	(6.9–33.9)	15.6	(11.0–21.7)	17.5	(11.2–26.4)
South Carolina	7.4	(5.1–10.6)	11.1	(7.4–16.4)	9.2	(7.1–12.0)	8.5	(6.2–11.6)	11.9	(6.9–19.8)	13.1	(5.0–30.2)	16.4	(12.5–21.3)	20.3	(13.0–30.2)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	7.6	(6.0–9.7)	15.0	(11.7–19.0)	11.2	(9.1–13.8)	11.6	(9.1–14.7)	9.6	(6.1–14.8)	8.0	(3.3–18.0)	22.2	(18.5–26.5)	29.0	(21.4–38.1)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	8.5	(7.9–9.1)	9.3	(8.7–9.9)	9.0	(8.6–9.4)	8.3	(7.9–8.8)	14.1	(12.6–15.7)	10.2	(8.3–12.6)	13.9	(13.2–14.6)	29.3	(26.8–32.0)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	10.2	(7.4–13.9)	12.6	(9.3–16.8)	11.5	(8.8–14.8)	10.9	(8.4–14.0)	15.8	(8.2–28.1)	15.4	(5.9–34.7)	18.5	(14.2–23.6)	29.8	(18.0–45.2)
Wisconsin	6.3	(4.6–8.6)	8.0	(5.7–11.1)	7.2	(5.8–8.9)	6.7	(5.1–8.8)	9.5	(5.3–16.3)	6.1	(2.2–15.8)	12.9	(10.2–16.3)	21.1	(14.4–29.9)
Median	7.3		9.9		8.8		8.0		12.2		8.7		15.8		24.8
Range	4.6–12.8		6.2–16.9		5.4–12.7		5.0–12.3		8.2–20.3		0.3–17.0		11.6–23.7		14.7–30.1
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	7.2	(5.3–9.7)	17.9	(14.3–22.1)	12.4	(10.1–15.2)	12.1	(9.8–14.8)	14.3	(9.4–21.3)	7.6	(3.0–18.0)	22.2	(17.9–27.1)	33.3	(24.3–43.7)
Broward County, FL	7.2	(4.6–11.2)	10.8	(5.6–19.8)	8.9	(5.5–14.1)	8.4	(4.8–14.2)	12.4	(5.3–26.3)	7.1	(1.7–25.9)	14.6	(8.5–23.9)	23.4	(11.3–42.4)
Chicago, IL	5.4	(3.6–8.0)	15.0	(11.5–19.4)	9.8	(7.6–12.5)	10.1	(7.6–13.4)	10.9	(6.1–18.7)	4.2	(1.0–15.9)	19.7	(15.2–25.3)	20.2	(13.0–30.0)
Cleveland, OH	8.0	(5.7–10.9)	21.9	(18.0–26.3)	14.8	(12.4–17.5)	15.3	(12.6–18.3)	13.3	(8.3–20.7)	12.3	(4.8–28.2)	25.5	(21.2–30.4)	22.2	(14.7–32.2)
DeKalb County, GA	4.6	(3.1–6.7)	14.1	(11.3–17.5)	9.1	(7.4–11.3)	8.0	(6.2–10.2)	16.6	(11.4–23.4)	13.2	(6.3–25.4)	16.3	(13.2–20.0)	27.8	(19.5–38.0)
Detroit, MI	3.8	(2.1–6.6)	16.9	(12.3–22.8)	9.4	(7.1–12.4)	9.6	(7.0–12.9)	10.1	(5.4–18.1)	0.0	—	20.0	(14.8–26.6)	12.3	(7.5–19.6)
District of Columbia	6.3	(5.5–7.2)	23.0	(21.3–24.8)	14.0	(13.1–15.0)	14.6	(13.5–15.7)	11.9	(9.7–14.5)	10.3	(6.8–15.3)	25.8	(23.9–27.7)	22.6	(19.2–26.4)
Duval County, FL	7.3	(5.8–9.1)	11.9	(9.8–14.4)	9.6	(8.2–11.3)	7.4	(6.1–8.9)	20.6	(16.1–26.0)	11.2	(6.4–18.9)	13.3	(11.0–16.0)	27.4	(22.7–32.7)
Ft. Worth, TX	5.0	(3.9–6.4)	12.0	(10.2–14.0)	8.4	(7.4–9.6)	8.2	(7.1–9.4)	11.9	(8.0–17.3)	7.0	(3.4–14.0)	17.7	(15.3–20.3)	23.8	(17.5–31.5)
Houston, TX	4.9	(4.0–6.1)	14.2	(11.9–16.9)	9.5	(8.2–10.9)	8.6	(7.2–10.3)	11.6	(7.8–16.9)	14.6	(8.5–24.1)	20.0	(17.1–23.3)	28.4	(22.1–35.7)
Los Angeles, CA	4.2	(2.8–6.3)	9.5	(6.9–12.8)	6.9	(5.4–8.9)	6.7	(5.1–8.8)	14.3	(7.4–25.9)	0.0	—	14.5	(10.9–19.0)	21.4	(11.1–37.2)
Miami-Dade County, FL	6.9	(5.5–8.6)	12.4	(9.7–15.7)	9.6	(8.0–11.5)	9.3	(7.5–11.6)	11.3	(7.7–16.3)	11.6	(4.8–25.4)	17.9	(15.2–21.1)	19.2	(14.3–25.2)
New York City, NY	3.3	(2.6–4.1)	10.1	(8.0–12.7)	6.5	(5.3–8.0)	6.5	(5.1–8.1)	9.2	(7.0–12.0)	4.8	(3.3–7.1)	18.3	(15.7–21.2)	16.6	(13.4–20.5)
Oakland, CA	3.9	(2.6–5.6)	11.8	(9.2–15.2)	7.8	(6.1–9.9)	8.1	(6.3–10.3)	8.3	(5.0–13.6)	3.5	(1.1–10.7)	20.4	(16.5–24.9)	11.1	(6.0–19.7)
Orange County, FL	4.8	(3.3–7.1)	10.8	(7.8–14.9)	7.8	(6.1–10.0)	7.3	(5.4–9.8)	10.4	(6.0–17.6)	5.2	(1.2–20.1)	16.0	(12.3–20.5)	21.8	(14.9–30.8)
Palm Beach County, FL	7.2	(5.2–9.7)	13.9	(11.2–17.2)	10.5	(8.7–12.6)	10.1	(8.3–12.4)	11.8	(7.6–17.7)	11.2	(6.0–20.0)	20.9	(17.3–24.9)	26.8	(19.7–35.3)
Philadelphia, PA	10.3	(6.5–16.0)	16.4	(11.7–22.4)	13.2	(9.1–18.7)	12.3	(8.6–17.4)	17.8	(10.7–28.1)	16.1	(6.5–34.5)	24.9	(18.1–33.2)	36.4	(24.2–50.7)
San Diego, CA	3.7	(2.7–5.1)	8.2	(6.3–10.6)	5.9	(4.8–7.3)	6.0	(4.9–7.4)	7.7	(4.6–12.6)	1.9	(0.3–12.8)	11.0	(8.8–13.5)	20.3	(13.9–28.7)
San Francisco, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Shelby County, TN	7.0	(5.1–9.7)	20.6	(17.2–24.5)	13.2	(10.7–16.1)	13.2	(10.8–16.1)	12.7	(8.0–19.6)	4.0	(0.7–20.0)	22.5	(18.5–27.0)	27.3	(18.9–37.6)
Median	5.4		13.9		9.5		8.6		11.9		7.1		19.7		22.6
Range	3.3–10.3		8.2–23.0		5.9–14.8		6.0–15.3		7.7–20.6		0.0–16.1		11.0–25.8		11.1–36.4

* Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^† 95% confidence interval.
^§ Not available.

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TABLE 139. Percentage of high school students who were currently sexually active,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^§	%	CI	%	CI
Total	28.8	(26.2–31.5)	28.6	(26.5–30.9)	28.7	(26.6–30.8)
Race/Ethnicity
White^¶	30.0	(26.7–33.6)	27.6	(24.9–30.5)	28.8	(26.2–31.5)
Black^¶	28.4	(24.8–32.2)	34.6	(29.2–40.5)	31.3	(27.7–35.2)
Hispanic	28.2	(24.5–32.4)	30.0	(27.3–32.9)	29.2	(26.3–32.3)
Grade
9	11.7	(9.4–14.5)	14.1	(12.1–16.4)	12.9	(11.3–14.7)
10	24.6	(21.6–28.0)	25.3	(22.1–28.7)	24.9	(22.7–27.4)
11	35.8	(32.1–39.8)	34.7	(31.0–38.5)	35.3	(32.3–38.5)
12	45.1	(40.5–49.8)	43.5	(39.4–47.7)	44.3	(40.6–48.0)
Sexual identity
Heterosexual (straight)	28.0	(25.2–31.1)	29.1	(26.8–31.5)	28.5	(26.4–30.8)
Gay, lesbian, or bisexual	36.5	(31.4–41.9)	26.0	(20.2–32.8)	33.7	(29.8–37.8)
Not sure	18.6	(13.8–24.7)	19.1	(10.8–31.7)	19.8	(15.4–25.1)
Sex of sexual contacts
Opposite sex only	57.7	(54.0–61.2)	55.8	(52.9–58.8)	56.7	(54.2–59.1)
Same sex only or both sexes	58.0	(52.0–63.8)	48.0	(39.7–56.4)	55.6	(50.4–60.6)

* Had sexual intercourse with at least one person, during the 3 months before the survey.
^† Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Non-Hispanic.

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**TABLE 140. Percentage of high school students who were currently sexually active,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017**
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Same sex only or both sexes
	%	CI^§	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	30.9	(25.3–37.1)	19.7	(15.2–25.1)	25.2	(21.0–29.8)	—^¶	—	—	—	—	—	—	—	—	—
Arizona	24.0	(20.3–28.2)	26.1	(21.6–31.3)	24.9	(21.1–29.2)	24.1	(20.6–28.1)	36.8	(27.7–46.9)	9.4	(4.0–20.5)	—	—	—	—
Arkansas	31.4	(26.5–36.6)	30.2	(23.2–38.3)	30.9	(26.4–35.8)	29.5	(25.3–34.1)	45.5	(32.9–58.6)	7.2	(1.5–27.8)	58.7	(53.2–63.9)	56.2	(38.7–72.3)
California	20.9	(16.3–26.5)	24.2	(20.0–28.9)	22.5	(18.8–26.8)	22.6	(18.8–26.9)	25.8	(17.5–36.3)	13.1	(4.3–33.9)	50.5	(47.0–54.0)	34.4	(23.2–47.6)
Colorado	24.9	(18.8–32.2)	21.6	(17.5–26.2)	23.4	(19.0–28.4)	23.3	(18.9–28.4)	27.0	(18.6–37.4)	18.2	(6.9–40.2)	—	—	—	—
Connecticut	26.3	(23.0–29.9)	24.4	(20.4–28.9)	25.3	(22.8–27.9)	24.5	(21.8–27.4)	28.9	(21.4–37.9)	27.4	(20.0–36.4)	50.5	(45.5–55.4)	55.1	(47.0–63.0)
Delaware	34.7	(30.0–39.8)	32.0	(27.8–36.5)	33.4	(29.7–37.2)	32.9	(29.2–36.8)	38.5	(31.1–46.5)	23.6	(12.7–39.7)	58.4	(54.4–62.3)	53.0	(43.3–62.5)
Florida	25.1	(23.2–27.2)	27.7	(25.8–29.6)	26.3	(24.8–27.9)	25.8	(24.3–27.4)	31.5	(28.2–35.0)	23.3	(16.8–31.2)	54.2	(52.0–56.3)	51.5	(46.4–56.5)
Hawaii	21.5	(18.6–24.7)	16.3	(14.1–18.7)	19.2	(17.1–21.4)	18.2	(16.1–20.6)	28.2	(23.1–33.8)	9.1	(5.8–14.0)	50.6	(46.6–54.6)	49.0	(42.2–55.9)
Idaho	25.5	(22.3–28.9)	24.7	(21.0–28.8)	25.0	(22.1–28.2)	—	—	—	—	—	—	—	—	—	—
Illinois	29.8	(26.9–32.8)	26.5	(22.7–30.8)	28.3	(25.5–31.4)	27.2	(24.0–30.7)	41.4	(31.3–52.3)	17.0	(10.8–25.6)	55.0	(50.3–59.6)	63.3	(54.0–71.7)
Iowa	36.7	(31.4–42.4)	28.3	(23.0–34.4)	32.7	(29.0–36.8)	30.1	(26.8–33.6)	53.9	(37.1–69.8)	43.2	(19.4–70.6)	59.2	(54.5–63.8)	74.2	(62.7–83.2)
Kansas	27.4	(23.8–31.2)	25.3	(20.9–30.2)	26.3	(23.0–29.9)	—	—	—	—	—	—	—	—	—	—
Kentucky	28.9	(23.7–34.7)	28.8	(22.9–35.4)	29.0	(24.2–34.4)	28.7	(23.5–34.6)	37.4	(29.1–46.5)	14.0	(7.0–25.9)	57.9	(51.2–64.2)	56.9	(48.2–65.2)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	31.1	(28.9–33.3)	26.1	(24.2–28.1)	28.6	(26.8–30.4)	28.6	(26.8–30.6)	31.3	(27.5–35.3)	19.7	(14.8–25.8)	54.6	(52.6–56.7)	52.4	(47.6–57.1)
Maryland	22.2	(21.2–23.3)	21.8	(20.9–22.6)	22.1	(21.3–22.8)	21.2	(20.4–22.0)	29.3	(27.6–31.2)	16.2	(14.0–18.6)	—	—	—	—
Massachusetts	26.3	(22.7–30.1)	23.7	(20.4–27.4)	25.0	(22.2–28.1)	25.3	(22.5–28.2)	29.7	(23.8–36.4)	9.4	(4.6–18.2)	52.5	(48.8–56.1)	51.3	(42.3–60.2)
Michigan	31.9	(25.7–38.8)	24.7	(19.0–31.4)	28.3	(22.9–34.4)	27.8	(22.0–34.3)	37.4	(31.2–44.1)	25.3	(16.2–37.2)	54.0	(45.7–62.1)	56.1	(46.7–65.1)
Missouri	35.6	(28.1–43.8)	28.9	(25.2–32.8)	32.3	(27.9–37.1)	—	—	—	—	—	—	—	—	—	—
Montana	34.2	(31.4–37.0)	28.9	(26.1–31.9)	31.6	(29.2–34.0)	—	—	—	—	—	—	—	—	—	—
Nebraska	20.8	(16.5–25.8)	20.2	(15.9–25.5)	20.5	(17.1–24.5)	20.6	(17.0–24.6)	26.5	(16.9–38.9)	11.0	(4.9–23.1)	49.1	(42.3–56.0)	51.6	(36.2–66.8)
Nevada	26.9	(22.1–32.4)	24.7	(20.6–29.3)	25.9	(22.8–29.2)	25.5	(21.9–29.4)	28.7	(21.7–36.7)	19.7	(11.5–31.8)	57.4	(51.9–62.8)	46.4	(32.8–60.7)
New Hampshire	30.5	(28.6–32.6)	29.0	(27.0–31.1)	29.8	(28.2–31.5)	29.8	(28.1–31.7)	33.8	(30.4–37.4)	19.8	(15.8–24.4)	55.6	(53.6–57.6)	58.4	(53.3–63.3)
New Mexico	27.1	(22.9–31.7)	26.8	(23.6–30.4)	27.0	(23.5–30.7)	26.3	(23.2–29.7)	36.0	(29.4–43.2)	17.7	(11.0–27.2)	57.0	(52.7–61.2)	52.9	(47.1–58.7)
New York	24.5	(21.6–27.6)	19.7	(16.6–23.3)	22.3	(19.5–25.3)	22.0	(19.2–25.2)	28.3	(22.9–34.5)	17.4	(13.4–22.2)	54.8	(50.7–58.8)	50.8	(40.2–61.4)
North Carolina	24.7	(20.8–29.0)	25.8	(21.6–30.6)	25.2	(21.6–29.2)	24.5	(20.9–28.6)	34.9	(28.9–41.5)	15.7	(8.7–26.9)	47.8	(43.1–52.4)	51.5	(42.6–60.3)
North Dakota	27.9	(24.3–31.8)	26.1	(22.8–29.7)	27.0	(24.0–30.3)	27.5	(24.3–31.0)	27.8	(21.4–35.3)	12.4	(6.9–21.3)	—	—	—	—
Oklahoma	32.9	(28.0–38.3)	24.0	(19.8–28.7)	28.4	(25.2–31.8)	27.7	(24.0–31.6)	41.6	(33.2–50.5)	21.3	(10.9–37.5)	50.8	(46.3–55.3)	53.0	(40.7–64.8)
Pennsylvania	27.8	(24.9–31.0)	26.3	(23.0–29.9)	27.1	(24.6–29.8)	27.3	(24.7–29.9)	29.1	(21.8–37.6)	13.3	(7.5–22.6)	53.9	(49.8–58.1)	49.5	(39.3–59.8)
Rhode Island	24.7	(19.8–30.5)	26.3	(21.7–31.5)	25.5	(21.5–29.9)	25.1	(21.0–29.7)	30.0	(21.0–40.9)	27.8	(17.6–40.9)	52.4	(45.2–59.6)	57.8	(45.0–69.6)
South Carolina	26.1	(21.1–31.9)	23.7	(19.4–28.5)	25.0	(21.4–29.1)	23.9	(20.1–28.2)	35.1	(27.0–44.1)	21.3	(10.8–37.7)	46.7	(41.8–51.7)	52.9	(40.8–64.6)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	26.9	(21.5–33.1)	28.2	(24.1–32.7)	27.5	(23.3–32.2)	28.0	(23.4–33.1)	27.1	(20.5–35.0)	18.3	(10.3–30.5)	57.4	(52.1–62.5)	49.9	(39.3–60.5)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	32.4	(31.5–33.4)	28.8	(27.9–29.7)	30.7	(30.1–31.4)	30.7	(30.0–31.4)	34.3	(32.2–36.4)	23.5	(20.6–26.6)	53.9	(52.9–54.9)	55.5	(52.7–58.2)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	34.6	(29.8–39.7)	32.5	(27.7–37.7)	33.5	(29.4–37.9)	34.0	(29.5–38.9)	32.3	(22.0–44.7)	21.0	(10.7–37.2)	61.5	(56.2–66.5)	45.5	(33.4–58.1)
Wisconsin	25.2	(21.9–28.7)	24.7	(21.4–28.2)	24.9	(22.5–27.4)	25.1	(22.5–28.0)	23.7	(18.4–29.9)	17.8	(9.7–30.2)	50.3	(46.2–54.4)	49.4	(38.1–60.8)
Median	27.1		26.1		26.3		26.1		31.4		18.0		54.1		52.6
Range	20.8–36.7		16.3–32.5		19.2–33.5		18.2–34.0		23.7–53.9		7.2–43.2		46.7–61.5		34.4–74.2
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	30.5	(26.4–34.9)	30.8	(26.0–35.9)	30.6	(27.2–34.3)	30.7	(27.1–34.6)	36.5	(28.2–45.7)	16.5	(8.5–29.6)	58.4	(53.3–63.3)	53.3	(43.1–63.2)
Broward County, FL	24.1	(17.2–32.6)	26.6	(19.3–35.5)	25.3	(19.8–31.7)	26.7	(20.9–33.3)	22.6	(12.1–38.4)	12.4	(4.0–32.3)	49.6	(40.7–58.6)	40.1	(23.3–59.6)
Chicago, IL	27.8	(23.3–32.9)	29.5	(24.2–35.5)	28.6	(24.5–33.0)	28.8	(24.1–33.9)	33.6	(23.5–45.5)	10.2	(5.0–19.7)	59.9	(53.1–66.3)	47.1	(37.6–56.9)
Cleveland, OH	36.6	(31.5–42.1)	34.0	(28.9–39.4)	35.6	(31.4–39.9)	34.9	(30.3–39.7)	43.6	(34.8–53.0)	29.7	(17.3–46.0)	60.2	(54.7–65.4)	62.2	(52.9–70.6)
DeKalb County, GA	20.6	(16.5–25.5)	25.8	(21.9–30.2)	23.0	(19.6–26.9)	21.2	(17.8–25.1)	36.8	(28.9–45.5)	20.9	(11.6–34.6)	45.3	(39.8–51.0)	49.0	(38.5–59.7)
Detroit, MI	21.7	(15.3–29.8)	27.5	(21.0–35.0)	24.4	(19.4–30.2)	24.3	(19.3–30.1)	27.0	(17.6–39.0)	14.1	(4.7–35.6)	49.0	(40.9–57.2)	42.8	(32.7–53.5)
District of Columbia	26.8	(25.3–28.5)	35.9	(33.9–37.9)	31.1	(29.9–32.4)	31.4	(30.0–32.8)	33.1	(29.8–36.6)	20.8	(16.1–26.5)	57.6	(55.5–59.6)	51.4	(47.3–55.6)
Duval County, FL	24.0	(21.0–27.2)	25.4	(21.9–29.3)	24.7	(22.2–27.5)	22.6	(19.9–25.5)	36.7	(31.5–42.3)	18.3	(10.9–29.2)	43.6	(39.8–47.5)	45.5	(40.4–50.8)
Ft. Worth, TX	23.5	(21.2–25.9)	26.5	(23.9–29.2)	25.0	(23.2–26.9)	24.5	(22.5–26.6)	31.5	(25.5–38.2)	23.2	(15.1–33.9)	55.3	(52.1–58.5)	52.9	(44.2–61.5)
Houston, TX	22.4	(19.7–25.3)	24.7	(21.8–27.9)	23.5	(21.3–25.9)	21.8	(19.5–24.2)	34.6	(29.2–40.4)	24.5	(16.3–35.1)	53.2	(49.4–56.9)	54.3	(46.6–61.7)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	29.7	(25.9–33.8)	27.7	(23.3–32.5)	28.9	(25.5–32.5)	27.7	(24.2–31.6)	39.8	(32.8–47.3)	23.4	(13.0–38.5)	55.1	(50.5–59.6)	52.0	(43.7–60.2)
New York City, NY	16.9	(14.6–19.5)	18.3	(15.5–21.5)	17.7	(15.5–20.1)	16.8	(14.3–19.5)	29.5	(24.9–34.5)	13.8	(11.1–17.0)	50.2	(47.1–53.4)	43.9	(37.1–51.0)
Oakland, CA	18.3	(14.8–22.5)	21.1	(17.5–25.3)	19.7	(16.6–23.3)	19.5	(16.3–23.3)	27.4	(19.6–36.8)	10.4	(4.9–20.6)	50.3	(44.7–55.9)	29.9	(21.3–40.3)
Orange County, FL	21.3	(17.1–26.3)	22.5	(18.1–27.5)	21.9	(18.8–25.5)	21.2	(17.7–25.2)	30.8	(22.3–40.9)	12.6	(4.9–29.0)	47.2	(41.5–53.1)	47.9	(37.2–58.8)
Palm Beach County, FL	23.9	(19.9–28.5)	26.6	(23.3–30.2)	25.2	(22.4–28.3)	24.9	(21.8–28.3)	27.5	(21.0–35.1)	21.6	(13.8–32.3)	54.0	(50.0–58.0)	44.0	(35.5–52.8)
Philadelphia, PA	26.2	(20.5–32.9)	30.4	(23.3–38.6)	28.2	(22.8–34.4)	28.0	(22.1–34.7)	30.5	(21.0–41.9)	20.0	(9.6–37.1)	57.0	(50.2–63.5)	53.7	(38.3–68.4)
San Diego, CA	20.7	(17.3–24.6)	19.9	(17.3–22.7)	20.3	(17.8–23.0)	20.6	(18.0–23.5)	24.2	(18.3–31.2)	8.0	(3.8–16.0)	42.7	(38.7–46.8)	39.4	(29.7–50.0)
San Francisco, CA	13.4	(11.0–16.2)	17.4	(14.9–20.2)	15.4	(13.4–17.6)	15.4	(13.3–17.8)	19.0	(13.1–26.8)	8.5	(4.6–15.5)	49.3	(45.3–53.3)	38.8	(28.8–49.9)
Shelby County, TN	28.1	(23.4–33.3)	33.2	(28.9–37.8)	30.5	(26.6–34.6)	29.6	(25.8–33.7)	36.0	(29.7–42.9)	23.4	(10.5–44.4)	54.3	(48.4–60.0)	56.5	(43.5–68.7)
Median	23.9		26.6		25.0		24.5		31.5		18.3		53.2		47.9
Range	13.4–36.6		17.4–35.9		15.4–35.6		15.4–34.9		19.0–43.6		8.0–29.7		42.7–60.2		29.9–62.2

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TABLE 141. Percentage of high school students who used a condom during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^§	%	CI	%	CI
Total	46.9	(43.9–50.0)	61.3	(58.4–64.2)	53.8	(51.4–56.2)
Race/Ethnicity
White^¶	47.0	(43.3–50.8)	61.9	(57.0–66.5)	54.1	(50.2–57.9)
Black^¶	45.8	(38.3–53.4)	57.9	(51.0–64.5)	52.1	(47.1–57.2)
Hispanic	47.1	(39.5–54.9)	62.4	(56.7–67.8)	54.9	(50.3–59.5)
Grade
9	46.8	(36.6–57.4)	61.1	(51.5–70.0)	54.5	(46.9–61.9)
10	52.4	(47.4–57.4)	63.2	(57.6–68.5)	57.8	(54.0–61.4)
11	50.0	(44.1–55.8)	63.1	(57.9–68.0)	56.3	(52.2–60.3)
12	41.3	(36.8–46.0)	59.1	(53.0–64.9)	49.9	(46.1–53.6)
Sexual identity
Heterosexual (straight)	49.6	(46.3–52.9)	61.8	(58.3–65.1)	56.1	(53.3–58.8)
Gay, lesbian, or bisexual	37.3	(30.4–44.8)	52.9	(35.6–69.5)	39.9	(32.6–47.8)
Not sure	39.2	(25.5–54.8)	—**	—	44.1	(29.1–60.4)
Sex of sexual contacts
Opposite sex only	50.3	(47.1–53.5)	61.6	(58.2–64.8)	56.3	(53.5–59.0)
Same sex only or both sexes	36.1	(29.3–43.4)	52.0	(33.6–69.9)	39.7	(33.5–46.3)

* Among the 28.7% of students nationwide who were currently sexually active.
^† Male and female students who had no sexual contact and female students who had sexual contact with only females are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Non-Hispanic.
** Not available.

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TABLE 142. Percentage of high school students who used a condom during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Same sex only or both sexes
	%	CI^§	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	54.8	(45.3–63.9)	59.9	(49.4–69.6)	56.7	(50.0–63.1)	—^¶	—	—	—	—	—	—	—	—	—
Arizona	51.3	(39.2–63.3)	54.2	(43.4–64.6)	52.6	(44.0–61.1)	52.3	(42.5–61.9)	53.6	(34.5–71.8)	—	—	—	—	—	—
Arkansas	47.3	(36.4–58.4)	50.2	(37.6–62.7)	48.7	(39.9–57.6)	51.2	(42.3–60.1)	33.4	(16.6–55.8)	—	—	52.1	(41.7–62.3)	28.7	(16.3–45.5)
California	45.0	(35.1–55.4)	63.3	(54.2–71.6)	54.8	(48.0–61.5)	58.9	(50.9–66.4)	—	—	—	—	58.4	(50.6–65.9)	—	—
Colorado	54.5	(41.5–66.8)	65.3	(55.6–73.9)	59.3	(51.4–66.8)	61.1	(52.9–68.7)	—	—	—	—	—	—	—	—
Connecticut	52.0	(46.0–58.0)	59.7	(53.9–65.2)	55.7	(51.7–59.6)	58.7	(53.5–63.7)	38.8	(23.2–57.0)	—	—	59.2	(53.9–64.2)	38.1	(23.8–54.7)
Delaware	45.4	(38.8–52.3)	61.8	(56.4–67.0)	52.7	(47.9–57.3)	56.0	(50.8–61.2)	44.1	(31.2–57.8)	—	—	54.7	(49.6–59.7)	52.3	(37.9–66.3)
Florida	52.0	(47.8–56.2)	63.1	(59.4–66.6)	57.4	(54.5–60.3)	61.0	(57.9–64.0)	41.1	(33.8–48.7)	32.2	(20.0–47.4)	61.5	(58.4–64.5)	38.4	(30.2–47.3)
Hawaii	41.2	(33.8–49.0)	44.8	(38.0–51.7)	42.7	(36.8–48.8)	45.3	(39.1–51.7)	27.6	(19.6–37.5)	40.0	(21.1–62.5)	45.7	(39.5–52.0)	29.0	(18.3–42.6)
Idaho	45.7	(37.8–53.9)	61.8	(53.5–69.5)	53.7	(48.4–59.0)	—	—	—	—	—	—	—	—	—	—
Illinois	46.7	(40.3–53.2)	58.8	(52.2–65.2)	52.6	(48.6–56.6)	55.7	(52.0–59.3)	38.0	(27.2–50.1)	—	—	54.9	(50.8–59.1)	38.0	(29.9–46.7)
Iowa	49.5	(38.1–61.0)	57.4	(44.9–68.9)	52.8	(41.8–63.4)	58.6	(45.7–70.4)	28.1	(14.2–47.9)	—	—	56.2	(43.9–67.7)	29.3	(12.5–54.7)
Kansas	52.9	(43.5–62.0)	62.5	(52.5–71.5)	57.6	(49.1–65.6)	—	—	—	—	—	—	—	—	—	—
Kentucky	44.3	(37.0–52.0)	53.3	(44.8–61.6)	48.7	(41.8–55.7)	51.8	(44.1–59.3)	28.2	(17.1–42.8)	—	—	52.1	(44.2–59.9)	26.1	(16.8–38.2)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	52.4	(48.4–56.4)	60.3	(56.6–63.9)	56.0	(53.4–58.6)	58.1	(55.4–60.7)	42.8	(36.1–49.7)	46.0	(31.8–60.8)	58.8	(55.9–61.6)	40.5	(34.4–46.8)
Maryland	50.7	(48.9–52.4)	64.2	(62.3–66.0)	56.9	(55.6–58.2)	59.5	(58.0–61.1)	44.4	(40.9–48.0)	45.4	(38.2–52.8)	—	—	—	—
Massachusetts	54.6	(48.6–60.5)	61.7	(56.1–67.0)	57.8	(53.1–62.3)	60.0	(55.0–64.9)	39.8	(27.5–53.5)	—	—	60.4	(55.8–64.9)	48.9	(36.2–61.7)
Michigan	47.1	(38.3–56.0)	52.3	(43.3–61.1)	49.3	(42.9–55.8)	51.4	(44.5–58.2)	35.6	(20.3–54.5)	—	—	51.7	(45.6–57.8)	36.4	(19.7–57.2)
Missouri	49.5	(40.8–58.2)	53.0	(42.6–63.1)	51.0	(45.0–57.0)	—	—	—	—	—	—	—	—	—	—
Montana	50.7	(47.2–54.2)	60.9	(56.4–65.2)	55.4	(52.5–58.3)	—	—	—	—	—	—	—	—	—	—
Nebraska	44.6	(33.6–56.0)	62.6	(52.1–72.0)	53.3	(46.1–60.3)	54.3	(46.7–61.8)	—	—	—	—	55.1	(47.6–62.5)	—	—
Nevada	53.1	(47.6–58.5)	55.8	(46.8–64.4)	54.4	(49.4–59.4)	57.0	(51.3–62.6)	35.6	(25.5–47.1)	—	—	57.6	(52.9–62.1)	38.5	(21.8–58.4)
New Hampshire	55.4	(52.4–58.4)	63.7	(60.5–66.7)	59.5	(57.3–61.6)	62.3	(60.0–64.5)	42.8	(36.0–49.8)	44.4	(34.5–54.7)	61.9	(59.7–64.2)	42.6	(35.9–49.7)
New Mexico	47.4	(39.8–55.2)	56.6	(51.6–61.4)	51.7	(46.2–57.1)	54.9	(49.5–60.2)	37.2	(28.7–46.7)	—	—	54.3	(49.0–59.4)	36.2	(25.1–49.0)
New York	53.6	(48.3–58.8)	66.2	(59.0–72.6)	58.6	(53.8–63.3)	61.6	(56.3–66.7)	45.2	(31.5–59.6)	45.3	(32.7–58.5)	62.0	(56.9–66.9)	46.5	(34.7–58.7)
North Carolina	46.7	(41.4–52.2)	60.7	(51.8–68.9)	53.7	(47.8–59.5)	56.9	(49.6–64.0)	32.6	(22.0–45.2)	—	—	57.2	(50.3–63.9)	34.9	(24.4–47.2)
North Dakota	60.6	(54.9–65.9)	71.4	(64.5–77.5)	65.6	(61.1–69.9)	66.9	(62.5–71.0)	45.7	(30.9–61.2)	—	—	—	—	—	—
Oklahoma	46.7	(37.9–55.8)	53.8	(45.1–62.2)	49.8	(43.1–56.4)	52.5	(45.5–59.5)	38.2	(22.0–57.5)	—	—	51.6	(44.4–58.7)	31.2	(15.4–52.9)
Pennsylvania	56.9	(50.9–62.7)	62.3	(54.9–69.2)	59.4	(55.1–63.4)	61.6	(57.2–65.9)	37.7	(22.5–55.7)	—	—	61.5	(56.9–65.9)	41.2	(26.9–57.2)
Rhode Island	54.2	(44.5–63.6)	62.0	(54.7–68.9)	57.8	(51.5–63.9)	59.3	(54.4–64.0)	62.0	(38.2–81.2)	—	—	59.3	(53.6–64.7)	54.6	(33.3–74.4)
South Carolina	48.6	(36.8–60.6)	54.1	(42.7–65.0)	50.9	(43.3–58.4)	52.3	(43.7–60.8)	49.2	(28.7–70.0)	—	—	52.3	(43.9–60.6)	47.9	(28.2–68.2)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	42.6	(37.1–48.3)	52.6	(45.8–59.4)	47.6	(42.7–52.6)	49.5	(43.5–55.4)	34.7	(22.6–49.2)	—	—	50.8	(45.0–56.5)	25.9	(15.2–40.5)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	52.1	(50.3–53.9)	61.1	(59.2–62.9)	56.2	(54.9–57.4)	58.0	(56.6–59.4)	45.6	(41.8–49.5)	43.2	(36.1–50.6)	58.6	(57.3–60.0)	42.8	(38.8–46.8)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	48.1	(39.9–56.5)	53.8	(45.9–61.5)	50.7	(45.5–55.9)	52.0	(45.6–58.4)	35.5	(19.7–55.3)	—	—	51.9	(45.2–58.4)	39.7	(21.4–61.4)
Wisconsin	56.1	(49.7–62.2)	69.8	(60.9–77.3)	62.8	(56.8–68.4)	63.4	(56.7–69.7)	55.3	(39.0–70.5)	—	—	64.1	(57.5–70.3)	58.7	(48.1–68.6)
Median	50.7		60.7		54.4		57.5		38.8		44.4		56.7		38.4
Range	41.2–60.6		44.8–71.4		42.7–65.6		45.3–66.9		27.6–62.0		32.2–46.0		45.7–64.1		25.9–58.7
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	41.9	(34.8–49.3)	63.9	(56.6–70.6)	52.2	(46.7–57.7)	54.1	(48.3–59.8)	39.1	(25.5–54.5)	—	—	56.8	(50.5–62.8)	33.8	(20.6–50.3)
Broward County, FL	37.9	(25.2–52.5)	74.4	(57.9–86.0)	56.3	(43.3–68.4)	59.8	(46.0–72.3)	—	—	—	—	60.5	(47.5–72.3)	—	—
Chicago, IL	48.1	(40.0–56.3)	59.5	(51.6–66.9)	53.5	(47.2–59.6)	55.4	(48.8–61.8)	44.3	(27.7–62.2)	—	—	55.4	(48.5–62.2)	41.8	(25.0–60.7)
Cleveland, OH	44.3	(35.9–53.1)	60.5	(51.2–69.1)	51.7	(45.4–58.0)	57.1	(50.0–63.9)	30.6	(18.7–45.8)	—	—	57.5	(50.6–64.0)	39.2	(25.4–55.0)
DeKalb County, GA	46.0	(36.6–55.7)	74.9	(67.5–81.1)	60.7	(54.6–66.6)	65.6	(58.8–71.8)	35.6	(21.5–52.9)	—	—	65.7	(58.9–71.9)	40.3	(25.6–57.0)
Detroit, MI	45.8	(37.9–54.0)	—	—	58.2	(50.0–66.0)	64.5	(56.6–71.6)	—	—	—	—	61.6	(52.6–69.9)	46.3	(28.1–65.6)
District of Columbia	48.7	(45.1–52.3)	72.2	(68.7–75.4)	61.2	(58.6–63.7)	64.8	(62.0–67.6)	43.2	(37.0–49.7)	49.9	(35.6–64.2)	64.6	(61.7–67.3)	51.3	(44.0–58.6)
Duval County, FL	51.9	(45.6–58.1)	61.9	(55.7–67.7)	56.4	(52.0–60.7)	61.5	(56.9–66.0)	39.4	(29.9–49.7)	—	—	61.5	(56.9–66.0)	44.5	(35.6–53.7)
Ft. Worth, TX	48.5	(42.2–55.0)	62.4	(56.7–67.7)	55.6	(51.2–59.9)	57.2	(52.4–61.7)	41.2	(29.9–53.6)	—	—	57.0	(52.2–61.7)	49.0	(37.8–60.4)
Houston, TX	43.8	(37.4–50.4)	64.8	(58.3–70.9)	54.7	(50.3–59.1)	57.8	(53.0–62.6)	39.3	(28.8–50.9)	—	—	57.8	(52.4–62.9)	41.8	(30.9–53.6)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	56.0	(51.3–60.7)	70.5	(63.9–76.3)	62.7	(58.8–66.4)	63.5	(59.5–67.3)	57.9	(47.2–67.9)	—	—	65.1	(61.2–68.7)	44.6	(32.2–57.8)
New York City, NY	50.0	(46.0–54.1)	66.5	(62.5–70.3)	57.4	(54.3–60.5)	61.2	(57.5–64.8)	47.9	(38.4–57.5)	48.5	(35.4–61.8)	60.8	(57.6–63.9)	49.9	(39.5–60.4)
Oakland, CA	34.5	(27.0–42.8)	53.2	(44.1–62.1)	45.0	(38.4–51.8)	47.6	(40.4–54.9)	32.0	(19.2–48.1)	—	—	45.2	(38.1–52.5)	—	—
Orange County, FL	56.2	(46.1–65.8)	58.8	(48.1–68.7)	57.7	(50.2–64.8)	59.8	(51.4–67.6)	48.6	(29.4–68.1)	—	—	58.4	(50.1–66.3)	57.3	(41.0–72.1)
Palm Beach County, FL	59.7	(52.6–66.4)	69.3	(62.7–75.3)	64.5	(59.3–69.4)	64.5	(58.6–70.0)	59.8	(44.9–73.1)	—	—	65.8	(60.0–71.2)	54.1	(38.2–69.2)
Philadelphia, PA	41.3	(33.2–49.9)	68.3	(57.6–77.4)	55.2	(47.9–62.3)	57.9	(49.7–65.7)	38.8	(23.7–56.3)	—	—	57.7	(49.0–65.9)	36.0	(20.9–54.4)
San Diego, CA	50.2	(42.5–57.9)	61.9	(53.1–69.9)	55.8	(49.6–61.8)	56.2	(49.8–62.3)	52.4	(39.3–65.1)	—	—	56.3	(49.8–62.5)	56.7	(37.2–74.2)
San Francisco, CA	48.3	(39.3–57.5)	57.2	(46.8–67.0)	52.9	(45.4–60.3)	54.2	(45.9–62.2)	53.2	(36.6–69.2)	—	—	55.4	(46.8–63.7)	51.7	(35.5–67.5)
Shelby County, TN	47.9	(39.7–56.2)	72.0	(62.8–79.6)	59.4	(52.8–65.7)	62.1	(54.6–69.1)	48.1	(35.7–60.7)	—	—	61.5	(54.1–68.4)	56.2	(40.9–70.3)
Median	48.1		64.3		56.3		59.8		43.2		—		58.4		46.3
Range	34.5–59.7		53.2–74.9		45.0–64.5		47.6–65.6		30.6–59.8		—		45.2–65.8		33.8–57.3

* Among students who were currently sexually active.
^† Male and female students who had no sexual contact and female students who had sexual contact with only females are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Not available.

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TABLE 143. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^§	%	CI	%	CI
Total	22.4	(19.6–25.5)	19.0	(16.3–22.0)	20.7	(18.8–22.7)
Race/Ethnicity
White^¶	29.6	(25.3–34.3)	24.5	(20.6–28.9)	27.1	(24.5–30.0)
Black^¶	11.2	(7.7–16.2)	15.1	(10.7–21.0)	13.2	(10.4–16.7)
Hispanic	12.0	(8.4–17.0)	12.1	(9.1–15.8)	12.1	(9.7–15.1)
Grade
9	10.0	(6.3–15.5)	7.2	(4.0–12.6)	8.6	(5.9–12.3)
10	17.4	(12.9–22.9)	16.7	(12.3–22.3)	17.0	(13.8–20.8)
11	19.9	(16.5–23.7)	21.5	(16.9–27.1)	20.6	(18.0–23.5)
12	31.4	(26.3–36.9)	22.8	(18.0–28.4)	27.2	(23.5–31.4)
Sexual identity
Heterosexual (straight)	24.2	(21.1–27.6)	19.5	(16.6–22.8)	21.7	(19.5–23.9)
Gay, lesbian, or bisexual	16.2	(11.3–22.7)	10.5	(4.9–20.9)	15.4	(11.4–20.4)
Not sure	12.4	(3.6–34.6)	8.4	(1.8–31.1)	10.2	(3.6–26.0)
Sex of sexual contacts
Opposite sex only	24.2	(21.1–27.5)	19.7	(16.8–23.0)	21.8	(19.8–24.0)
Both sexes	17.7	(11.5–26.4)	13.0	(7.2–22.3)	17.0	(11.7–24.2)

* To prevent pregnancy, among the 28.7% of students nationwide who were currently sexually active.
^† Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Non-Hispanic.

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TABLE 144. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Both sexes
	%	CI^§	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	16.7	(10.0–26.7)	19.6	(13.6–27.5)	17.8	(13.2–23.7)	—^¶	—	—	—	—	—	—	—	—	—
Arizona	19.8	(11.2–32.6)	19.5	(11.6–30.8)	19.6	(12.3–29.6)	20.5	(12.6–31.5)	14.9	(6.3–31.4)	—	—	—	—	—	—
Arkansas	19.1	(13.1–26.9)	16.1	(10.7–23.5)	17.5	(13.7–22.2)	15.9	(12.9–19.6)	26.6	(15.2–42.4)	—	—	17.2	(12.2–23.5)	27.6	(16.2–42.8)
California	24.3	(16.3–34.5)	14.4	(8.0–24.6)	18.9	(12.7–27.0)	19.4	(13.2–27.7)	—	—	—	—	18.7	(12.2–27.6)	—	—
Colorado	22.2	(14.2–33.1)	13.6	(5.9–28.5)	18.4	(12.7–25.9)	18.0	(11.6–26.7)	—	—	—	—	—	—	—	—
Connecticut	30.7	(25.3–36.8)	28.4	(21.0–37.2)	29.6	(24.1–35.8)	30.7	(25.5–36.5)	25.3	(12.0–45.7)	—	—	31.3	(26.1–36.9)	26.4	(12.3–47.9)
Delaware	23.2	(18.4–28.8)	15.1	(11.8–19.1)	19.2	(16.2–22.6)	20.8	(17.3–24.7)	11.9	(6.0–22.2)	—	—	20.4	(17.0–24.3)	16.7	(7.1–34.5)
Florida	20.1	(16.6–24.2)	13.4	(11.0–16.1)	16.6	(14.3–19.3)	17.0	(14.6–19.7)	13.9	(8.5–22.0)	19.2	(9.7–34.4)	16.9	(14.3–19.8)	16.7	(11.5–23.7)
Hawaii	15.9	(13.0–19.3)	16.1	(11.6–22.0)	15.9	(13.3–18.9)	16.1	(13.2–19.5)	12.5	(5.2–27.1)	18.3	(8.4–35.5)	14.7	(11.7–18.3)	24.9	(11.8–45.1)
Idaho	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Iowa	30.0	(23.2–37.9)	16.7	(11.4–23.9)	24.2	(18.5–31.0)	26.6	(20.6–33.5)	11.7	(3.5–33.1)	—	—	25.1	(18.7–32.7)	23.2	(12.2–39.6)
Kansas	32.5	(26.0–39.7)	22.6	(16.1–30.7)	27.7	(23.3–32.5)	—	—	—	—	—	—	—	—	—	—
Kentucky	27.9	(22.5–34.0)	19.8	(14.2–26.9)	24.5	(20.6–28.9)	24.6	(20.2–29.7)	27.2	(17.9–39.1)	—	—	24.0	(19.8–28.9)	26.1	(15.4–40.8)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	36.9	(33.6–40.2)	27.2	(24.2–30.5)	32.3	(29.6–35.2)	34.4	(31.7–37.2)	19.8	(13.7–27.8)	18.9	(9.2–34.7)	33.7	(30.7–36.8)	24.7	(17.8–33.3)
Maryland	23.1	(21.4–24.8)	17.2	(15.8–18.7)	20.2	(19.1–21.4)	21.2	(20.0–22.5)	16.0	(13.6–18.8)	17.1	(12.0–23.9)	—	—	—	—
Massachusetts	39.0	(32.9–45.4)	29.6	(22.1–38.4)	34.8	(30.0–39.9)	37.6	(32.2–43.3)	16.0	(9.3–26.1)	—	—	37.0	(31.9–42.5)	28.0	(16.8–42.9)
Michigan	28.0	(21.4–35.6)	18.8	(12.6–26.9)	23.9	(19.1–29.5)	25.4	(19.9–31.9)	8.6	(3.4–20.5)	—	—	24.3	(18.6–31.1)	23.7	(9.9–46.7)
Missouri	27.4	(21.6–34.2)	18.9	(12.4–27.7)	23.7	(18.9–29.3)	—	—	—	—	—	—	—	—	—	—
Montana	29.4	(24.8–34.5)	21.1	(18.2–24.5)	25.4	(22.3–28.9)	—	—	—	—	—	—	—	—	—	—
Nebraska	26.9	(18.5–37.4)	15.2	(10.4–21.8)	21.2	(16.5–26.9)	22.5	(17.1–29.0)	11.1	(3.0–33.7)	—	—	22.1	(16.9–28.4)	—	—
Nevada	16.6	(11.2–24.0)	12.9	(7.3–21.9)	14.7	(9.5–22.1)	16.8	(10.5–26.0)	5.9	(1.6–19.2)	—	—	15.7	(10.1–23.6)	11.3	(4.8–24.3)
New Hampshire	36.5	(33.6–39.5)	24.5	(21.9–27.2)	30.4	(28.3–32.6)	31.8	(29.5–34.1)	23.5	(18.2–29.6)	21.0	(12.5–33.0)	32.0	(29.8–34.3)	21.0	(15.9–27.2)
New Mexico	16.5	(13.7–19.7)	17.5	(14.8–20.5)	16.9	(15.2–18.8)	18.6	(16.9–20.4)	10.0	(5.3–17.9)	—	—	18.0	(15.9–20.2)	12.1	(7.2–19.7)
New York	30.1	(24.6–36.2)	16.6	(11.0–24.4)	24.6	(20.9–28.7)	25.6	(20.7–31.3)	21.0	(13.2–31.6)	20.1	(8.4–40.9)	25.6	(21.6–30.0)	26.1	(14.3–42.8)
North Carolina	22.8	(15.2–32.8)	16.6	(11.7–23.0)	19.6	(14.3–26.3)	20.7	(15.2–27.6)	13.0	(7.1–22.5)	—	—	21.8	(15.9–29.1)	10.2	(4.2–22.7)
North Dakota	22.8	(18.3–27.9)	19.1	(14.0–25.5)	20.9	(16.9–25.4)	21.7	(17.4–26.8)	14.0	(6.8–26.7)	—	—	—	—	—	—
Oklahoma	18.0	(12.1–26.0)	19.4	(11.4–31.1)	18.6	(13.0–25.8)	19.0	(13.1–26.8)	16.6	(6.8–35.1)	—	—	18.2	(12.5–25.8)	25.1	(9.8–50.7)
Pennsylvania	25.6	(21.0–30.7)	21.8	(16.8–27.9)	23.6	(20.2–27.5)	25.0	(21.1–29.3)	13.1	(6.8–23.7)	—	—	25.1	(21.5–29.2)	15.7	(7.6–29.8)
Rhode Island	38.4	(29.9–47.7)	20.8	(15.4–27.4)	29.4	(23.1–36.7)	31.0	(24.3–38.6)	21.8	(10.6–39.6)	—	—	30.4	(22.2–40.0)	25.4	(11.9–46.3)
South Carolina	22.5	(13.1–35.7)	19.2	(10.8–31.9)	21.1	(13.9–30.5)	23.4	(15.4–34.0)	9.1	(2.4–29.3)	—	—	24.6	(16.4–35.1)	2.8	(0.3–23.0)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	17.0	(11.3–24.8)	11.3	(7.3–17.0)	14.1	(10.6–18.5)	15.2	(11.6–19.8)	6.4	(1.3–26.5)	—	—	15.0	(11.3–19.7)	10.1	(3.2–27.8)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	36.3	(34.5–38.0)	26.9	(25.2–28.7)	31.8	(30.6–33.0)	33.5	(32.2–34.9)	21.6	(18.5–25.1)	22.5	(16.8–29.5)	33.7	(32.4–35.1)	19.9	(16.7–23.6)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	30.9	(22.1–41.3)	19.1	(13.9–25.7)	25.4	(20.2–31.5)	27.3	(21.6–33.9)	8.5	(3.9–17.4)	—	—	26.9	(21.0–33.8)	8.8	(2.7–25.4)
Wisconsin	29.7	(22.2–38.6)	22.4	(15.0–32.0)	26.0	(20.6–32.3)	26.4	(20.5–33.1)	20.0	(9.5–37.4)	—	—	27.1	(21.8–33.1)	24.8	(10.2–48.9)
Median	25.6		19.1		21.2		22.5		14.0		19.2		24.3		23.2
Range	15.9–39.0		11.3–29.6		14.1–34.8		15.2–37.6		5.9–27.2		17.1–22.5		14.7–37.0		2.8–28.0
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	19.9	(14.7–26.3)	15.8	(10.2–23.6)	18.3	(14.5–22.9)	19.6	(15.2–25.0)	12.6	(4.6–30.1)	—	—	18.6	(14.2–24.0)	—	—
Broward County, FL	16.4	(8.5–29.2)	16.2	(6.8–34.0)	16.3	(9.5–26.4)	15.1	(8.2–26.2)	—	—	—	—	15.5	(8.4–26.8)	—	—
Chicago, IL	18.0	(12.6–25.0)	10.9	(6.3–18.4)	14.6	(10.3–20.3)	13.9	(9.8–19.3)	18.4	(5.6–46.3)	—	—	14.7	(10.6–20.2)	19.7	(7.5–42.8)
Cleveland, OH	15.0	(10.2–21.6)	12.1	(7.3–19.4)	13.5	(10.0–18.1)	14.7	(10.8–19.8)	9.0	(3.8–19.8)	—	—	16.1	(11.9–21.6)	7.6	(2.8–18.9)
DeKalb County, GA	9.9	(5.2–17.9)	8.6	(4.9–14.9)	9.2	(5.6–14.8)	10.6	(6.0–18.0)	6.5	(2.3–17.1)	—	—	10.8	(6.4–17.5)	4.5	(0.8–20.9)
Detroit, MI	16.7	(10.5–25.6)	—	—	12.5	(8.5–18.2)	13.4	(9.0–19.5)	—	—	—	—	12.4	(7.9–19.1)	—	—
District of Columbia	10.0	(8.0–12.4)	7.4	(5.6–9.6)	8.6	(7.2–10.2)	9.3	(7.8–11.2)	3.9	(2.0–7.5)	8.5	(3.5–19.3)	8.0	(6.6–9.7)	10.2	(6.5–15.6)
Duval County, FL	20.5	(15.6–26.3)	16.0	(11.5–21.9)	18.3	(14.8–22.3)	18.9	(15.2–23.2)	17.0	(10.7–25.9)	—	—	19.6	(15.9–24.0)	16.8	(10.3–26.0)
Ft. Worth, TX	13.4	(9.8–18.2)	12.0	(8.8–16.3)	12.8	(10.2–16.0)	13.6	(10.7–17.1)	5.1	(1.5–15.5)	—	—	13.6	(10.6–17.2)	6.8	(1.9–20.9)
Houston, TX	11.2	(8.1–15.3)	10.3	(6.7–15.4)	10.7	(8.1–14.1)	10.4	(7.5–14.3)	7.9	(4.4–14.0)	—	—	11.5	(8.3–15.6)	6.8	(3.4–13.3)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	14.7	(11.2–19.1)	7.9	(5.4–11.2)	11.6	(9.3–14.3)	11.7	(9.2–14.9)	10.8	(5.7–19.6)	—	—	11.9	(9.4–15.0)	13.2	(6.5–24.9)
New York City, NY	14.4	(11.1–18.4)	12.5	(9.4–16.6)	13.8	(11.9–16.0)	12.3	(9.8–15.5)	15.1	(10.7–20.7)	21.4	(13.4–32.4)	13.2	(10.9–15.8)	20.7	(13.8–29.9)
Oakland, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Orange County, FL	9.3	(5.6–15.1)	10.0	(5.6–17.2)	9.6	(6.6–13.7)	11.0	(7.6–15.7)	2.7	(0.4–17.8)	—	—	11.3	(7.9–15.9)	—	—
Palm Beach County, FL	20.1	(14.7–27.0)	10.5	(6.6–16.4)	15.2	(11.7–19.6)	15.7	(12.0–20.2)	15.0	(6.1–32.5)	—	—	16.0	(12.1–20.8)	11.3	(3.8–29.1)
Philadelphia, PA	16.3	(10.7–24.1)	10.9	(5.1–21.8)	13.5	(9.5–18.9)	12.0	(7.7–18.2)	16.1	(6.1–36.1)	—	—	13.7	(9.6–19.3)	16.7	(6.5–36.4)
San Diego, CA	26.1	(20.4–32.7)	19.9	(14.4–27.0)	23.1	(19.1–27.7)	25.0	(20.6–30.1)	7.7	(2.9–18.6)	—	—	25.3	(21.0–30.1)	13.7	(4.4–35.2)
San Francisco, CA	13.4	(8.2–21.1)	14.2	(9.3–21.2)	14.1	(10.5–18.7)	14.6	(10.8–19.6)	7.9	(1.8–28.3)	—	—	14.7	(10.6–20.0)	—	—
Shelby County, TN	9.2	(4.9–16.5)	10.9	(6.6–17.3)	10.0	(6.7–14.5)	10.8	(7.0–16.3)	2.4	(0.8–6.4)	—	—	10.7	(7.1–16.0)	0.8	(0.1–5.8)
Median	14.8		10.9		13.5		13.5		8.5		—		13.7		11.3
Range	9.2–26.1		7.4–19.9		8.6–23.1		9.3–25.0		2.4–18.4		—		8.0–25.3		0.8–20.7

* To prevent pregnancy, among students who were currently sexually active.
^† Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Not available.

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TABLE 145. Percentage of high school students who used an IUD* or implant^† before last sexual intercourse,^§ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^¶ — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI**	%	CI	%	CI
Total	5.3	(3.7–7.7)	2.7	(1.8–3.9)	4.1	(3.0–5.5)
Race/Ethnicity
White^††	6.2	(4.1–9.3)	3.4	(2.2–5.2)	4.9	(3.5–6.8)
Black^††	3.9	(1.6–9.1)	2.6	(1.0–6.6)	3.3	(1.5–7.0)
Hispanic	4.4	(2.0–9.4)	0.1	(0.0–0.5)	2.2	(1.1–4.6)
Grade
9	3.6	(0.9–13.9)	1.0	(0.2–4.1)	2.2	(0.7–6.6)
10	5.1	(2.6–9.9)	1.9	(0.7–5.5)	3.6	(2.0–6.4)
11	5.4	(3.0–9.3)	3.3	(1.7–6.2)	4.4	(2.8–6.7)
12	6.0	(3.9–9.2)	3.2	(1.9–5.2)	4.6	(3.2–6.6)
Sexual identity
Heterosexual (straight)	5.5	(3.8–8.0)	2.6	(1.8–3.9)	4.0	(2.9–5.5)
Gay, lesbian, or bisexual	4.9	(2.6–9.0)	0.0	—	4.1	(2.2–7.6)
Not sure	3.4	(0.9–12.3)	13.0	(4.8–30.8)	6.2	(3.0–12.5)
Sex of sexual contacts
Opposite sex only	5.4	(3.7–7.7)	2.7	(1.9–4.0)	4.0	(2.9–5.4)
Both sexes	6.2	(3.3–11.1)	4.2	(0.8–19.5)	5.9	(3.2–10.5)

* Such as Mirena or ParaGard.
^† Such as Implanon or Nexplanon.
^§ To prevent pregnancy, among the 28.7% of students nationwide who were currently sexually active.
^¶ Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
** 95% confidence interval.
^†† Non-Hispanic.

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TABLE 146. Percentage of high school students who used an IUD* or implant^† before last sexual intercourse,^§ by sex, sexual identity, and sex of sexual contacts^¶ — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Both sexes
	%	CI**	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	13.7	(9.5–19.4)	6.3	(3.0–12.6)	10.7	(7.3–15.5)	—^††	—	—	—	—	—	—	—	—	—
Arizona	4.0	(1.3–11.7)	3.1	(1.1–8.8)	3.5	(1.7–7.2)	3.9	(1.7–8.8)	1.7	(0.2–12.7)	—	—	—	—	—	—
Arkansas	8.6	(4.1–17.2)	4.4	(0.7–22.2)	6.6	(2.7–15.1)	6.6	(2.3–17.3)	7.5	(3.7–14.4)	—	—	6.6	(2.3–17.4)	11.7	(5.5–23.1)
California	7.7	(3.8–14.9)	3.9	(1.5–9.9)	6.3	(3.3–11.6)	6.0	(2.9–11.8)	—	—	—	—	4.9	(2.0–11.2)	—	—
Colorado	17.1	(10.1–27.4)	5.7	(2.5–12.3)	11.7	(8.0–17.0)	13.0	(8.7–19.1)	—	—	—	—	—	—	—	—
Connecticut	3.0	(1.3–6.7)	0.7	(0.1–4.6)	1.9	(0.8–4.3)	1.6	(0.6–4.4)	0.8	(0.1–6.5)	—	—	1.6	(0.6–4.1)	4.8	(1.1–19.4)
Delaware	7.9	(4.7–12.9)	3.8	(1.9–7.7)	6.0	(4.0–9.0)	6.0	(3.9–9.0)	5.9	(2.6–12.9)	—	—	6.4	(4.1–9.8)	2.2	(0.7–6.9)
Florida	1.9	(1.1–3.2)	1.9	(1.0–3.5)	1.9	(1.2–2.8)	1.5	(0.9–2.4)	1.5	(0.4–4.6)	7.7	(2.4–22.3)	1.5	(0.9–2.4)	4.5	(1.9–10.5)
Hawaii	8.8	(5.4–14.1)	6.4	(4.2–9.7)	7.9	(5.6–11.2)	8.0	(5.4–11.7)	7.7	(3.4–16.3)	14.7	(4.6–38.2)	8.7	(6.1–12.4)	6.1	(1.5–21.8)
Idaho	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Iowa	12.7	(8.0–19.5)	9.9	(4.5–20.4)	11.6	(7.8–17.0)	11.2	(6.0–19.9)	6.9	(1.5–26.7)	—	—	12.2	(7.6–19.0)	8.3	(2.6–23.7)
Kansas	6.1	(3.8–9.6)	2.2	(0.6–7.7)	4.2	(2.6–6.8)	—	—	—	—	—	—	—	—	—	—
Kentucky	10.1	(5.7–17.5)	5.1	(2.5–10.5)	7.7	(4.5–12.8)	7.5	(4.1–13.2)	9.1	(3.3–22.7)	—	—	7.6	(4.1–13.6)	7.5	(1.7–27.9)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	11.2	(9.5–13.3)	8.4	(6.4–11.0)	9.9	(8.6–11.3)	10.0	(8.6–11.6)	9.7	(6.0–15.4)	3.2	(0.7–13.1)	10.0	(8.6–11.7)	13.4	(10.0–17.7)
Maryland	5.1	(4.4–6.0)	2.1	(1.6–2.7)	3.7	(3.2–4.3)	3.6	(3.0–4.3)	4.1	(2.9–5.7)	5.0	(3.0–8.4)	—	—	—	—
Massachusetts	3.5	(1.9–6.4)	3.6	(1.9–6.7)	3.6	(2.3–5.5)	3.4	(2.2–5.3)	5.2	(1.7–15.0)	—	—	3.5	(2.2–5.6)	2.4	(0.6–9.2)
Michigan	6.2	(3.8–9.9)	3.0	(1.0–9.1)	5.0	(3.3–7.6)	4.3	(2.3–7.8)	12.5	(3.2–38.3)	—	—	4.0	(2.5–6.3)	8.3	(3.1–20.6)
Missouri	5.9	(3.6–9.3)	1.3	(0.3–5.8)	3.9	(2.7–5.5)	—	—	—	—	—	—	—	—	—	—
Montana	9.6	(7.0–13.1)	4.6	(3.1–6.7)	7.2	(5.5–9.5)	—	—	—	—	—	—	—	—	—	—
Nebraska	5.1	(2.1–11.5)	3.5	(1.5–8.2)	4.3	(2.3–7.8)	3.4	(1.6–6.9)	8.4	(2.4–25.4)	—	—	4.2	(2.0–8.3)	—	—
Nevada	4.9	(1.7–13.3)	3.1	(1.7–5.7)	4.0	(2.0–7.8)	4.3	(2.2–8.3)	3.7	(0.5–24.7)	—	—	4.4	(2.1–8.8)	3.7	(0.4–27.0)
New Hampshire	11.7	(10.1–13.4)	6.5	(5.3–8.1)	9.2	(8.1–10.3)	9.0	(7.9–10.2)	9.9	(7.0–14.0)	12.0	(6.2–21.9)	9.1	(8.0–10.3)	12.9	(9.0–18.2)
New Mexico	10.8	(8.3–14.0)	3.9	(2.2–6.9)	7.5	(5.7–9.8)	7.0	(5.2–9.4)	9.0	(5.2–15.2)	—	—	7.1	(5.0–10.1)	14.1	(6.9–26.6)
New York	4.8	(3.1–7.6)	2.2	(0.9–5.4)	3.8	(2.3–6.2)	2.9	(1.6–5.4)	9.3	(4.5–18.0)	2.9	(1.3–6.4)	3.0	(1.6–5.7)	10.9	(4.7–23.1)
North Carolina	6.3	(3.9–10.0)	5.6	(3.1–10.1)	5.9	(4.0–8.8)	5.2	(3.5–7.7)	9.5	(2.7–28.5)	—	—	5.7	(4.0–8.0)	11.1	(4.3–25.7)
North Dakota	4.5	(2.5–8.0)	1.0	(0.4–2.9)	2.8	(1.7–4.6)	2.9	(1.7–4.7)	2.9	(0.4–18.5)	—	—	—	—	—	—
Oklahoma	6.8	(3.6–12.6)	7.1	(3.6–13.4)	6.9	(4.5–10.5)	5.5	(3.0–9.7)	19.4	(9.3–36.1)	—	—	6.7	(4.2–10.6)	6.7	(1.5–24.7)
Pennsylvania	5.0	(2.9–8.4)	1.7	(0.8–3.6)	3.4	(2.2–5.1)	3.3	(2.1–5.3)	3.9	(1.2–12.0)	—	—	2.8	(1.6–4.7)	10.8	(3.8–26.9)
Rhode Island	4.2	(1.9–9.2)	3.4	(0.9–12.7)	3.8	(1.4–9.8)	4.0	(1.6–9.5)	4.1	(0.8–17.7)	—	—	4.1	(1.7–9.5)	3.9	(0.5–22.6)
South Carolina	5.8	(2.3–14.2)	3.7	(1.1–11.5)	4.9	(2.2–10.3)	4.1	(1.6–10.2)	9.9	(2.8–29.2)	—	—	5.1	(2.2–11.5)	6.1	(0.7–35.9)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	3.3	(1.4–7.7)	2.7	(1.3–5.4)	3.0	(1.5–5.8)	2.9	(1.4–5.6)	5.0	(1.2–18.7)	—	—	2.8	(1.4–5.6)	5.3	(1.1–21.5)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	16.6	(15.3–18.0)	9.7	(8.6–10.9)	13.3	(12.4–14.2)	13.1	(12.1–14.1)	13.9	(11.4–16.9)	17.7	(12.6–24.4)	13.2	(12.2–14.2)	16.7	(13.7–20.2)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	4.9	(2.6–9.2)	2.0	(0.6–6.4)	3.6	(1.9–6.7)	3.3	(1.5–7.1)	7.2	(3.9–12.9)	—	—	3.3	(1.5–7.0)	7.6	(4.2–13.5)
Wisconsin	9.1	(5.5–14.7)	6.9	(4.1–11.2)	8.0	(5.7–11.1)	8.2	(5.6–11.9)	6.5	(1.9–20.3)	—	—	8.1	(5.4–11.8)	2.6	(0.3–17.5)
Median	6.2		3.7		5.0		4.3		7.2		7.7		5.1		7.5
Range	1.9–17.1		0.7–9.9		1.9–13.3		1.5–13.1		0.8–19.4		2.9–17.7		1.5–13.2		2.2–16.7
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	13.4	(8.8–19.8)	7.3	(4.1–12.7)	10.4	(7.2–14.7)	11.0	(7.4–15.9)	10.0	(3.9–23.1)	—	—	10.1	(6.5–15.4)	—	—
Broward County, FL	11.3	(4.4–26.1)	2.6	(0.4–16.5)	6.9	(2.7–16.5)	8.0	(3.1–18.9)	—	—	—	—	6.0	(2.1–16.1)	—	—
Chicago, IL	3.9	(1.8–8.2)	2.0	(0.7–5.6)	3.0	(1.7–5.2)	3.4	(1.9–5.9)	1.1	(0.1–8.6)	—	—	3.3	(1.9–5.7)	1.8	(0.2–12.7)
Cleveland, OH	4.4	(2.0–9.4)	0.6	(0.2–2.3)	2.9	(1.5–5.5)	2.1	(0.9–5.2)	7.2	(2.4–19.8)	—	—	2.2	(0.9–5.3)	6.8	(1.7–23.4)
DeKalb County, GA	6.2	(3.5–10.8)	1.8	(0.6–5.7)	4.0	(2.3–6.9)	3.3	(1.8–6.2)	8.5	(3.2–20.7)	—	—	2.9	(1.4–5.9)	13.3	(5.5–28.8)
Detroit, MI	1.5	(0.3–7.3)	—	—	0.8	(0.1–3.8)	0.7	(0.1–5.1)	—	—	—	—	1.0	(0.2–4.9)	—	—
District of Columbia	9.7	(7.7–12.2)	2.7	(1.8–4.0)	6.1	(5.0–7.4)	6.2	(5.0–7.7)	4.2	(2.2–7.8)	6.9	(2.8–16.0)	6.3	(5.0–7.8)	8.0	(5.0–12.3)
Duval County, FL	1.6	(0.6–3.9)	1.3	(0.4–3.7)	1.6	(0.8–3.1)	1.4	(0.6–3.3)	1.3	(0.3–5.4)	—	—	1.5	(0.7–3.3)	2.1	(0.5–8.1)
Ft. Worth, TX	4.2	(2.4–7.3)	1.7	(0.6–4.3)	2.9	(1.8–4.7)	3.2	(2.0–5.3)	1.5	(0.2–9.8)	—	—	2.9	(1.6–4.9)	3.2	(0.8–12.1)
Houston, TX	3.3	(2.0–5.4)	1.2	(0.4–3.4)	2.2	(1.3–3.4)	2.0	(1.0–3.8)	3.1	(0.9–10.2)	—	—	2.0	(1.1–3.8)	4.5	(1.3–14.3)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	0.6	(0.1–2.2)	1.8	(0.7–4.4)	1.1	(0.5–2.6)	1.0	(0.4–2.8)	1.1	(0.2–7.6)	—	—	1.0	(0.4–2.7)	1.7	(0.2–11.2)
New York City, NY	5.3	(3.8–7.3)	2.8	(1.7–4.7)	4.3	(3.3–5.5)	3.4	(2.5–4.6)	6.5	(3.7–11.2)	6.3	(2.7–14.2)	3.9	(3.0–5.0)	5.0	(1.8–13.1)
Oakland, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Orange County, FL	2.0	(0.5–8.6)	2.3	(0.6–8.7)	2.1	(0.8–5.7)	2.5	(0.9–6.8)	0.0	—	—	—	2.2	(0.7–6.7)	—	—
Palm Beach County, FL	1.3	(0.3–5.1)	0.0	—	0.7	(0.2–2.6)	0.8	(0.2–3.0)	0.0	—	—	—	0.7	(0.2–2.9)	0.0	—
Philadelphia, PA	14.0	(7.1–25.7)	0.9	(0.2–4.7)	7.3	(3.8–13.8)	5.6	(2.7–11.1)	15.7	(8.8–26.4)	—	—	5.7	(2.7–11.4)	21.3	(11.6–35.8)
San Diego, CA	8.5	(5.8–12.3)	0.8	(0.1–5.1)	4.8	(3.2–7.0)	4.5	(2.9–7.0)	6.0	(2.0–16.6)	—	—	4.3	(2.7–6.7)	10.9	(3.2–31.2)
San Francisco, CA	14.8	(10.0–21.2)	6.1	(3.3–10.8)	9.9	(6.9–14.0)	10.4	(7.3–14.6)	7.6	(2.1–23.6)	—	—	9.8	(7.0–13.8)	—	—
Shelby County, TN	6.8	(3.5–12.7)	1.0	(0.1–6.8)	3.9	(2.0–7.3)	3.1	(1.2–7.6)	6.3	(2.2–16.8)	—	—	3.2	(1.3–7.6)	7.3	(2.1–22.4)
Median	4.8		1.8		3.4		3.3		5.1		—		3.0		5.0
Range	0.6–14.8		0.0–7.3		0.7–10.4		0.7–11.0		0.0–15.7		—		0.7–10.1		0.0–21.3

* Such as Mirena or ParaGard.
^† Such as Implanon or Nexplanon.
^§ To prevent pregnancy, among students who were currently sexually active.
^¶ Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
** 95% confidence interval.
^†† Not available.

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TABLE 147. Percentage of high school students who used a shot,* patch,^† or birth control ring^§ before last sexual intercourse,^¶ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts** — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^††	%	CI	%	CI
Total	6.9	(5.5–8.6)	2.2	(1.6–3.1)	4.7	(3.8–5.7)
Race/Ethnicity
White^§§	8.1	(5.8–11.1)	2.4	(1.6–3.6)	5.4	(4.0–7.2)
Black^§§	8.6	(5.9–12.4)	3.4	(1.6–6.9)	6.0	(4.3–8.4)
Hispanic	3.9	(2.1–7.3)	1.1	(0.3–3.6)	2.5	(1.2–4.9)
Grade
9	5.5	(2.3–13.0)	1.8	(0.5–6.1)	3.5	(1.7–7.1)
10	6.0	(3.4–10.2)	0.9	(0.3–2.9)	3.5	(2.1–5.9)
11	7.5	(5.1–11.0)	3.0	(1.6–5.6)	5.4	(3.8–7.7)
12	7.3	(5.0–10.5)	2.6	(1.6–4.2)	5.0	(3.7–6.9)
Sexual identity
Heterosexual (straight)	7.3	(5.6–9.4)	2.3	(1.7–3.2)	4.7	(3.7–5.9)
Gay, lesbian, or bisexual	6.0	(2.9–12.0)	0.0	—	5.0	(2.4–10.0)
Not sure	3.8	(0.7–19.6)	0.0	—	2.4	(0.4–12.7)
Sex of sexual contacts
Opposite sex only	7.3	(5.6–9.4)	2.2	(1.5–3.1)	4.6	(3.6–5.8)
Both sexes	5.1	(2.5–9.9)	5.6	(1.2–22.4)	5.2	(2.4–10.9)

* Such as Depo-Provera.
^† Such as OrthoEvra.
^§ Such as NuvaRing.
^¶ To prevent pregnancy, among the 28.7% of students nationwide who were currently sexually active.
** Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^†† 95% confidence interval.
^§§ Non-Hispanic.

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TABLE 148. Percentage of high school students who used a shot,* patch,^† or birth control ring^§ before last sexual intercourse,^¶ by sex, sexual identity, and sex of sexual contacts** — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Both sexes
	%	CI^††	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	6.9	(3.5–13.1)	2.2	(0.5–8.2)	5.0	(2.7–9.2)	—^§§	—	—	—	—	—	—	—	—	—
Arizona	5.4	(2.3–12.2)	0.7	(0.2–2.6)	3.0	(1.3–6.9)	2.9	(1.2–6.9)	3.6	(0.8–14.3)	—	—	—	—	—	—
Arkansas	10.1	(3.7–24.9)	3.8	(0.8–15.8)	7.1	(3.0–15.5)	6.6	(3.1–13.3)	10.9	(2.5–36.7)	—	—	6.4	(3.0–13.0)	5.1	(1.0–22.8)
California	6.0	(2.7–12.6)	3.1	(1.2–7.6)	4.4	(2.7–7.2)	3.7	(2.1–6.3)	—	—	—	—	5.0	(3.1–8.0)	—	—
Colorado	5.7	(2.2–14.2)	7.4	(3.3–16.0)	6.4	(3.8–10.6)	7.5	(4.3–12.7)	—	—	—	—	—	—	—	—
Connecticut	4.8	(2.6–8.8)	2.3	(0.8–6.5)	3.6	(1.9–6.7)	2.9	(1.4–5.7)	0.0	—	—	—	3.0	(1.5–6.0)	5.8	(1.3–23.0)
Delaware	6.4	(4.0–9.9)	4.6	(2.4–8.6)	5.5	(3.8–7.8)	5.6	(3.9–8.1)	5.0	(1.3–17.6)	—	—	5.5	(3.7–8.0)	4.5	(1.5–12.5)
Florida	4.1	(2.8–6.0)	2.4	(1.5–3.9)	3.4	(2.5–4.4)	3.4	(2.4–4.7)	4.1	(1.4–11.1)	1.9	(0.3–11.0)	3.4	(2.6–4.6)	2.7	(0.9–7.6)
Hawaii	7.4	(4.5–11.8)	4.3	(2.0–8.8)	6.1	(4.0–9.3)	6.8	(4.3–10.4)	1.9	(0.6–5.7)	9.9	(2.4–33.2)	6.8	(4.4–10.5)	4.2	(1.8–9.4)
Idaho	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Iowa	5.5	(2.2–13.1)	2.2	(0.6–8.2)	4.1	(1.8–8.7)	3.6	(1.3–9.6)	7.0	(2.0–21.3)	—	—	4.0	(1.7–9.2)	6.2	(1.4–23.2)
Kansas	5.3	(2.8–10.0)	3.4	(1.6–7.1)	4.4	(2.6–7.4)	—	—	—	—	—	—	—	—	—	—
Kentucky	9.1	(5.7–14.4)	3.0	(1.5–5.6)	6.0	(4.0–8.9)	6.2	(4.0–9.5)	5.7	(1.9–15.8)	—	—	5.6	(3.5–9.0)	6.1	(1.6–20.5)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	6.5	(4.7–8.9)	4.0	(2.9–5.4)	5.4	(4.3–6.7)	5.4	(4.3–6.6)	4.9	(2.2–10.4)	8.1	(2.3–25.3)	5.4	(4.4–6.7)	5.7	(2.6–12.1)
Maryland	4.8	(4.0–5.7)	2.6	(2.0–3.2)	3.7	(3.3–4.3)	3.7	(3.2–4.3)	3.5	(2.4–5.1)	1.5	(0.6–4.0)	—	—	—	—
Massachusetts	4.5	(2.9–7.0)	2.2	(1.0–4.7)	3.5	(2.3–5.2)	2.9	(1.8–4.7)	5.0	(2.3–10.6)	—	—	3.5	(2.3–5.5)	4.1	(1.1–13.7)
Michigan	8.4	(5.2–13.3)	5.0	(2.3–10.4)	6.9	(4.5–10.6)	7.1	(4.3–11.5)	0.0	—	—	—	7.7	(5.2–11.4)	3.1	(0.4–19.0)
Missouri	7.2	(3.7–13.7)	6.1	(3.4–10.6)	6.7	(3.7–11.9)	—	—	—	—	—	—	—	—	—	—
Montana	9.4	(7.4–11.7)	6.1	(4.3–8.6)	7.9	(6.7–9.4)	—	—	—	—	—	—	—	—	—	—
Nebraska	7.6	(4.1–13.7)	4.1	(1.5–10.5)	5.9	(3.6–9.5)	5.7	(3.3–9.7)	8.5	(2.5–25.5)	—	—	5.3	(2.9–9.5)	—	—
Nevada	3.4	(1.4–7.9)	0.7	(0.2–3.1)	2.1	(0.9–5.1)	1.8	(0.7–4.4)	4.3	(0.8–20.8)	—	—	2.4	(1.0–5.5)	1.2	(0.1–8.7)
New Hampshire	5.4	(4.0–7.2)	2.1	(1.5–2.9)	3.7	(2.9–4.7)	3.4	(2.7–4.2)	5.8	(2.9–11.2)	1.3	(0.3–5.3)	3.6	(2.8–4.5)	6.5	(3.3–12.5)
New Mexico	10.0	(6.2–15.7)	2.9	(1.6–5.4)	6.6	(4.1–10.6)	6.8	(4.2–10.9)	6.3	(3.2–12.3)	—	—	6.7	(4.1–10.8)	7.3	(3.1–16.1)
New York	2.3	(1.1–4.6)	2.6	(1.3–5.3)	2.4	(1.4–4.1)	2.0	(1.0–3.9)	2.1	(0.9–5.1)	9.0	(2.2–30.0)	1.8	(0.9–3.4)	2.5	(0.9–6.9)
North Carolina	8.4	(5.2–13.3)	4.0	(1.8–8.6)	6.1	(3.9–9.6)	5.7	(3.4–9.5)	10.1	(3.5–25.6)	—	—	5.8	(3.7–8.8)	10.7	(3.4–29.1)
North Dakota	5.8	(3.9–8.6)	1.4	(0.5–3.9)	3.6	(2.5–5.3)	3.2	(2.0–5.1)	9.5	(3.7–22.4)	—	—	—	—	—	—
Oklahoma	8.4	(4.7–14.7)	6.4	(3.0–13.2)	7.6	(4.6–12.2)	7.9	(4.6–13.3)	4.8	(1.7–12.8)	—	—	7.8	(4.6–12.9)	6.8	(2.2–19.0)
Pennsylvania	6.8	(4.2–10.6)	2.5	(0.9–6.9)	4.7	(2.7–8.0)	4.9	(2.8–8.5)	3.1	(0.7–11.9)	—	—	4.7	(2.8–7.7)	6.8	(2.0–20.7)
Rhode Island	2.4	(1.2–4.9)	5.0	(1.5–15.2)	3.7	(1.6–8.0)	4.0	(1.7–9.3)	3.0	(1.8–4.8)	—	—	3.7	(1.5–9.1)	4.3	(3.1–5.9)
South Carolina	4.3	(1.7–10.2)	4.5	(1.5–12.5)	4.3	(2.3–8.0)	4.8	(2.4–9.3)	2.7	(0.5–12.8)	—	—	4.3	(2.0–8.8)	0.7	(0.1–5.4)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	5.3	(2.7–10.3)	2.5	(1.0–6.2)	3.9	(2.2–6.8)	4.2	(2.3–7.4)	0.0	—	—	—	3.8	(2.1–6.7)	3.8	(0.6–20.0)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	6.7	(5.8–7.6)	3.5	(2.8–4.3)	5.2	(4.6–5.8)	5.3	(4.7–6.0)	4.7	(3.3–6.6)	4.1	(2.0–8.3)	5.1	(4.5–5.7)	7.4	(5.4–10.0)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	8.4	(4.7–14.6)	3.3	(1.2–8.8)	5.9	(3.4–10.0)	6.2	(3.6–10.7)	3.4	(0.7–14.3)	—	—	6.5	(3.7–11.1)	1.0	(0.1–8.1)
Wisconsin	4.2	(2.3–7.4)	2.8	(1.3–5.9)	3.5	(2.1–5.6)	3.8	(2.3–6.2)	1.7	(0.2–13.6)	—	—	3.7	(2.3–6.1)	2.1	(0.2–17.6)
Median	6.0		3.1		4.7		4.8		4.3		4.1		5.0		4.5
Range	2.3–10.1		0.7–7.4		2.1–7.9		1.8–7.9		0.0–10.9		1.3–9.9		1.8–7.8		0.7–10.7
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	8.4	(5.0–13.7)	6.8	(3.2–14.0)	7.6	(4.8–11.8)	8.9	(5.6–13.8)	1.3	(0.2–9.3)	—	—	8.1	(5.0–13.0)	—	—
Broward County, FL	0.0	—	0.0	—	0.0	—	0.0	—	—	—	—	—	0.0	—	—	—
Chicago, IL	11.0	(6.3–18.4)	2.2	(0.6–7.3)	6.8	(3.7–12.2)	7.0	(3.6–13.4)	3.7	(1.2–11.2)	—	—	6.5	(3.3–12.6)	8.1	(1.8–30.1)
Cleveland, OH	11.6	(7.5–17.5)	6.8	(3.6–12.5)	9.3	(6.2–13.8)	9.0	(5.7–14.1)	12.5	(5.2–27.1)	—	—	7.4	(4.6–11.6)	13.3	(5.7–28.1)
DeKalb County, GA	3.3	(1.0–10.3)	3.0	(1.1–8.1)	3.1	(1.5–6.6)	3.0	(1.3–6.7)	2.9	(0.4–18.5)	—	—	2.8	(1.3–6.1)	5.3	(1.3–19.6)
Detroit, MI	1.0	(0.1–7.2)	—	—	2.1	(0.8–5.6)	1.5	(0.4–5.9)	—	—	—	—	1.6	(0.4–6.3)	—	—
District of Columbia	9.9	(7.9–12.4)	2.3	(1.5–3.6)	5.9	(4.8–7.2)	5.7	(4.6–7.2)	7.6	(4.7–11.9)	2.5	(0.4–15.2)	5.9	(4.7–7.4)	8.1	(4.7–13.6)
Duval County, FL	4.9	(2.8–8.5)	1.7	(0.6–4.8)	3.5	(2.1–5.7)	3.2	(1.7–5.8)	3.7	(1.4–9.6)	—	—	3.4	(1.9–6.0)	3.0	(1.1–8.1)
Ft. Worth, TX	4.3	(2.4–7.8)	1.4	(0.5–3.4)	2.8	(1.7–4.6)	2.9	(1.7–5.0)	2.8	(0.5–14.6)	—	—	2.8	(1.6–4.8)	4.0	(0.7–19.9)
Houston, TX	3.5	(1.9–6.4)	1.6	(0.7–3.8)	2.5	(1.5–4.1)	2.5	(1.5–4.4)	1.3	(0.2–8.9)	—	—	2.2	(1.3–3.8)	4.8	(1.5–14.2)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	2.6	(1.4–4.8)	1.0	(0.4–2.8)	1.9	(1.2–2.9)	1.8	(1.1–2.9)	2.8	(0.9–8.3)	—	—	1.7	(1.1–2.6)	4.7	(1.5–13.7)
New York City, NY	5.5	(3.7–8.3)	2.9	(1.7–5.1)	4.3	(3.2–5.7)	3.7	(2.6–5.2)	4.4	(1.9–9.9)	5.8	(2.6–12.3)	4.3	(3.1–5.8)	6.3	(2.7–13.9)
Oakland, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Orange County, FL	1.4	(0.2–8.7)	3.1	(0.9–10.0)	2.2	(0.8–6.3)	2.0	(0.6–6.7)	0.0	—	—	—	2.7	(0.9–7.6)	—	—
Palm Beach County, FL	1.7	(0.6–4.5)	1.3	(0.4–4.0)	1.5	(0.7–3.1)	1.7	(0.8–3.6)	0.0	—	—	—	1.5	(0.7–3.4)	1.9	(0.3–12.6)
Philadelphia, PA	9.2	(4.6–17.3)	2.0	(0.7–6.0)	5.5	(3.0–10.0)	5.5	(2.6–11.4)	4.8	(1.8–11.9)	—	—	5.8	(2.8–11.3)	5.1	(2.2–11.4)
San Diego, CA	3.7	(1.8–7.5)	1.8	(0.7–5.1)	2.8	(1.6–5.0)	2.8	(1.5–5.1)	3.3	(0.4–20.6)	—	—	3.0	(1.7–5.5)	2.2	(0.3–14.9)
San Francisco, CA	7.5	(3.4–15.9)	4.2	(2.1–8.2)	5.6	(3.4–9.3)	5.5	(3.2–9.4)	5.3	(1.0–23.7)	—	—	6.2	(3.6–10.5)	—	—
Shelby County, TN	7.4	(4.3–12.4)	1.2	(0.3–4.5)	4.3	(2.6–7.0)	5.1	(3.1–8.2)	0.1	(0.0–1.1)	—	—	4.8	(2.8–7.9)	2.7	(0.7–10.3)
Median	4.6		2.0		3.3		3.1		3.1		—		3.2		4.8
Range	0.0–11.6		0.0–6.8		0.0–9.3		0.0–9.0		0.0–12.5		—		0.0–8.1		1.9–13.3

* Such as Depo-Provera.
^† Such as OrthoEvra.
^§ Such as NuvaRing.
^¶ To prevent pregnancy, among students who were currently sexually active.
** Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^†† 95% confidence interval.
^§§ Not available.

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TABLE 149. Percentage of high school students who used birth control pills; an IUD* or implant;^† or a shot,^§ patch,^¶ or birth control ring** before last sexual intercourse,^†† by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^§§ — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^¶¶	%	CI	%	CI
Total	34.6	(31.4–38.0)	23.9	(21.0–27.0)	29.4	(27.0–31.9)
Race/Ethnicity
White***	43.9	(39.9–47.9)	30.3	(26.4–34.4)	37.4	(34.5–40.3)
Black***	23.7	(17.6–31.2)	21.1	(16.2–26.9)	22.5	(18.8–26.8)
Hispanic	20.4	(15.9–25.9)	13.4	(9.8–17.9)	16.8	(13.6–20.7)
Grade
9	19.2	(12.1–29.0)	10.1	(6.4–15.6)	14.3	(9.8–20.4)
10	28.5	(21.5–36.7)	19.6	(14.7–25.6)	24.1	(19.5–29.4)
11	32.8	(28.3–37.6)	27.8	(22.9–33.4)	30.4	(27.3–33.7)
12	44.7	(39.5–50.0)	28.5	(23.5–34.1)	36.9	(32.8–41.2)
Sexual identity
Heterosexual (straight)	37.0	(33.5–40.7)	24.5	(21.3–27.9)	30.3	(27.8–33.0)
Gay, lesbian, or bisexual	27.2	(21.3–34.0)	10.5	(4.9–20.9)	24.4	(19.4–30.3)
Not sure	19.6	(8.8–38.1)	21.4	(8.6–43.9)	18.8	(10.0–32.6)
Sex of sexual contacts
Opposite sex only	36.8	(33.0–40.8)	24.6	(21.6–28.0)	30.4	(27.7–33.1)
Both sexes	29.0	(22.3–36.7)	22.8	(12.2–38.4)	28.1	(22.1–34.8)

* Such as Mirena or ParaGard.
^† Such as Implanon or Nexplanon.
^§ Such as Depo-Provera.
^¶ Such as OrthoEvra.
** Such as NuvaRing.
^†† To prevent pregnancy, among the 28.7% of students nationwide who were currently sexually active.
^§§ Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^¶¶ 95% confidence interval.
*** Non-Hispanic.

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TABLE 150. Percentage of high school students who used birth control pills; an IUD* or implant;^† or a shot,^§ patch,^¶ or birth control ring** before last sexual intercourse,^†† by sex, sexual identity, and sex of sexual contacts^§§ — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Both sexes
	%	CI^¶¶	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	37.3	(27.7–48.1)	28.1	(21.4–36.0)	33.6	(26.9–41.0)	—***	—	—	—	—	—	—	—	—	—
Arizona	29.2	(18.5–42.7)	23.3	(14.4–35.4)	26.1	(18.4–35.5)	27.3	(18.5–38.3)	20.3	(9.8–37.3)	—	—	—	—	—	—
Arkansas	37.8	(28.5–48.2)	24.3	(19.1–30.3)	31.1	(26.0–36.8)	29.1	(23.9–34.8)	45.0	(31.1–59.8)	—	—	30.1	(25.2–35.6)	44.4	(29.7–60.2)
California	37.9	(28.5–48.5)	21.5	(13.0–33.3)	29.6	(21.4–39.3)	29.1	(20.8–39.0)	—	—	—	—	28.6	(19.9–39.1)	—	—
Colorado	45.0	(36.4–53.9)	26.7	(14.8–43.3)	36.5	(30.2–43.4)	38.5	(30.9–46.6)	—	—	—	—	—	—	—	—
Connecticut	38.5	(32.0–45.5)	31.3	(23.4–40.6)	35.1	(28.8–42.1)	35.2	(29.3–41.6)	26.1	(12.6–46.5)	—	—	35.8	(29.7–42.5)	37.1	(22.1–55.0)
Delaware	37.4	(31.9–43.2)	23.5	(19.3–28.4)	30.7	(27.1–34.5)	32.4	(28.5–36.6)	22.8	(13.9–35.0)	—	—	32.2	(28.6–36.1)	23.4	(12.0–40.6)
Florida	26.1	(22.2–30.4)	17.6	(14.6–21.1)	21.8	(19.3–24.6)	21.9	(19.3–24.7)	19.5	(12.3–29.3)	28.8	(16.7–44.9)	21.8	(19.1–24.8)	23.9	(17.2–32.3)
Hawaii	32.1	(26.6–38.1)	26.8	(21.3–33.2)	29.9	(25.6–34.6)	30.9	(26.7–35.3)	22.1	(12.1–36.8)	43.0	(25.2–62.7)	30.2	(25.5–35.4)	35.2	(18.5–56.6)
Idaho	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Iowa	48.2	(37.1–59.5)	28.8	(20.8–38.5)	39.9	(30.6–49.9)	41.4	(30.4–53.3)	25.6	(11.9–46.7)	—	—	41.3	(30.8–52.6)	37.7	(20.7–58.4)
Kansas	44.0	(38.2–49.9)	28.2	(21.4–36.2)	36.3	(32.5–40.3)	—	—	—	—	—	—	—	—	—	—
Kentucky	47.1	(40.5–53.9)	27.9	(21.2–35.8)	38.3	(32.3–44.6)	38.3	(31.4–45.6)	41.9	(25.7–60.1)	—	—	37.3	(30.6–44.4)	39.7	(23.7–58.2)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	54.6	(51.0–58.1)	39.6	(35.9–43.5)	47.6	(45.0–50.2)	49.8	(47.1–52.5)	34.3	(27.7–41.6)	30.3	(17.3–47.4)	49.1	(46.3–51.9)	43.9	(36.3–51.8)
Maryland	33.0	(31.3–34.8)	21.9	(20.3–23.5)	27.7	(26.5–28.9)	28.5	(27.2–29.9)	23.6	(20.8–26.7)	23.7	(17.9–30.7)	—	—	—	—
Massachusetts	47.0	(41.0–53.2)	35.4	(27.7–43.9)	41.8	(36.9–46.8)	43.9	(38.4–49.5)	26.2	(18.2–36.0)	—	—	44.1	(38.8–49.5)	34.5	(22.7–48.6)
Michigan	42.5	(34.4–51.0)	26.8	(19.2–36.1)	35.8	(29.5–42.7)	36.8	(29.4–45.0)	21.1	(8.7–42.9)	—	—	36.0	(28.9–43.8)	35.2	(18.7–56.2)
Missouri	40.5	(34.2–47.2)	26.3	(18.6–35.7)	34.3	(28.7–40.4)	—	—	—	—	—	—	—	—	—	—
Montana	48.4	(43.9–52.8)	31.8	(28.4–35.5)	40.6	(37.4–43.8)	—	—	—	—	—	—	—	—	—	—
Nebraska	39.6	(29.7–50.4)	22.8	(15.7–31.9)	31.4	(25.3–38.3)	31.6	(25.1–39.0)	28.0	(14.2–47.9)	—	—	31.5	(24.8–39.1)	—	—
Nevada	25.0	(17.7–34.0)	16.8	(10.5–25.7)	20.9	(15.2–28.1)	22.9	(16.4–31.0)	13.9	(6.1–28.6)	—	—	22.5	(16.4–30.0)	16.1	(6.9–33.2)
New Hampshire	53.6	(50.3–56.8)	33.1	(30.2–36.1)	43.3	(40.9–45.8)	44.2	(41.6–46.8)	39.2	(33.0–45.8)	34.3	(24.4–45.9)	44.7	(42.2–47.2)	40.4	(33.5–47.8)
New Mexico	37.3	(30.0–45.3)	24.3	(21.2–27.8)	31.0	(26.3–36.2)	32.4	(28.4–36.7)	25.4	(14.8–40.0)	—	—	31.9	(27.3–36.8)	33.5	(21.8–47.7)
New York	37.2	(31.5–43.3)	21.4	(15.8–28.4)	30.8	(27.4–34.4)	30.5	(25.7–35.8)	32.3	(23.7–42.3)	32.0	(15.9–54.0)	30.4	(26.2–35.0)	39.5	(24.1–57.3)
North Carolina	37.4	(28.8–46.9)	26.2	(19.6–34.0)	31.7	(25.4–38.7)	31.7	(25.5–38.5)	32.6	(21.2–46.5)	—	—	33.2	(26.4–40.8)	32.0	(19.9–47.2)
North Dakota	33.1	(28.0–38.7)	21.5	(16.3–27.9)	27.3	(23.2–31.8)	27.8	(23.4–32.8)	26.5	(16.1–40.4)	—	—	—	—	—	—
Oklahoma	33.3	(26.0–41.5)	32.9	(23.6–43.6)	33.1	(27.7–38.9)	32.5	(26.7–38.8)	40.7	(24.7–58.9)	—	—	32.8	(27.4–38.7)	38.5	(19.6–61.6)
Pennsylvania	37.3	(31.6–43.3)	26.1	(21.0–31.9)	31.7	(27.5–36.3)	33.2	(28.6–38.2)	20.1	(11.9–31.9)	—	—	32.6	(28.2–37.3)	33.3	(20.3–49.5)
Rhode Island	45.1	(38.1–52.2)	29.2	(21.7–37.9)	36.9	(30.8–43.4)	38.9	(32.8–45.5)	28.8	(16.0–46.2)	—	—	38.2	(30.4–46.6)	33.6	(20.6–49.6)
South Carolina	32.6	(20.7–47.2)	27.4	(16.2–42.6)	30.3	(22.0–40.1)	32.4	(22.7–43.8)	21.7	(9.4–42.7)	—	—	34.0	(24.6–45.0)	9.6	(2.0–35.3)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	25.7	(20.0–32.2)	16.4	(11.8–22.4)	21.0	(17.8–24.6)	22.3	(19.1–25.9)	11.5	(4.0–28.6)	—	—	21.7	(18.2–25.6)	19.2	(8.1–39.0)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	59.5	(57.7–61.3)	40.1	(38.1–42.0)	50.2	(48.9–51.5)	51.9	(50.4–53.3)	40.2	(36.4–44.2)	44.3	(37.0–51.9)	51.9	(50.5–53.3)	44.1	(39.8–48.4)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	44.2	(34.4–54.4)	24.4	(17.9–32.3)	34.9	(28.1–42.3)	36.9	(29.7–44.6)	19.1	(11.9–29.2)	—	—	36.7	(29.1–45.0)	17.5	(7.5–35.7)
Wisconsin	43.0	(35.3–51.1)	32.0	(23.3–42.2)	37.5	(31.1–44.4)	38.4	(31.8–45.5)	28.3	(15.3–46.4)	—	—	38.9	(32.5–45.6)	29.5	(12.0–56.2)
Median	37.9		26.7		33.1		32.4		26.1		32.0		33.2		34.5
Range	25.0–59.5		16.4–40.1		20.9–50.2		21.9–51.9		11.5–45.0		23.7–44.3		21.7–51.9		9.6–44.4
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	41.6	(33.9–49.7)	29.9	(21.7–39.8)	36.3	(30.4–42.7)	39.5	(33.1–46.3)	23.9	(12.3–41.2)	—	—	36.8	(30.4–43.8)	—	—
Broward County, FL	27.6	(17.6–40.6)	18.8	(9.0–35.3)	23.2	(15.6–33.1)	23.1	(14.6–34.6)	—	—	—	—	21.5	(13.4–32.7)	—	—
Chicago, IL	32.9	(24.2–42.9)	15.1	(9.9–22.3)	24.4	(18.1–32.1)	24.3	(17.6–32.6)	23.3	(9.2–47.6)	—	—	24.5	(17.9–32.6)	29.5	(13.3–53.3)
Cleveland, OH	31.0	(24.6–38.2)	19.5	(12.8–28.5)	25.7	(20.7–31.6)	25.9	(19.9–33.0)	28.7	(17.8–42.8)	—	—	25.7	(20.4–31.8)	27.8	(16.4–43.0)
DeKalb County, GA	19.4	(12.6–28.7)	13.5	(8.2–21.3)	16.4	(11.1–23.4)	16.9	(11.1–25.0)	17.9	(9.9–30.4)	—	—	16.5	(10.3–25.4)	23.1	(12.3–39.2)
Detroit, MI	19.2	(12.7–27.9)	—	—	15.4	(11.1–20.9)	15.6	(11.0–21.6)	—	—	—	—	15.0	(10.2–21.6)	—	—
District of Columbia	29.6	(26.4–33.1)	12.4	(10.2–15.0)	20.6	(18.6–22.7)	21.3	(19.1–23.7)	15.7	(11.5–21.1)	17.9	(9.9–30.4)	20.2	(18.0–22.6)	26.2	(20.2–33.2)
Duval County, FL	26.9	(21.5–33.1)	19.0	(14.1–25.2)	23.4	(19.7–27.5)	23.5	(19.5–28.2)	22.0	(15.2–30.8)	—	—	24.5	(20.5–29.1)	21.9	(14.4–31.7)
Ft. Worth, TX	22.0	(17.0–28.0)	15.1	(11.2–20.0)	18.6	(15.2–22.6)	19.8	(16.1–24.1)	9.4	(3.9–20.6)	—	—	19.2	(15.5–23.7)	13.9	(6.0–28.9)
Houston, TX	18.0	(14.2–22.5)	13.1	(9.3–18.1)	15.4	(12.6–18.6)	15.0	(12.0–18.6)	12.4	(7.2–20.6)	—	—	15.7	(12.5–19.6)	16.2	(10.0–25.2)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	17.9	(14.1–22.4)	10.7	(8.0–14.2)	14.6	(12.2–17.3)	14.5	(11.7–17.9)	14.7	(8.6–24.1)	—	—	14.6	(11.9–17.7)	19.6	(11.2–31.8)
New York City, NY	25.2	(21.3–29.5)	18.3	(14.3–23.1)	22.4	(19.8–25.2)	19.4	(16.5–22.7)	26.0	(20.3–32.7)	33.5	(22.8–46.2)	21.4	(18.5–24.5)	32.0	(22.2–43.7)
Oakland, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Orange County, FL	12.7	(7.4–21.0)	15.4	(9.5–23.8)	14.0	(9.4–20.2)	15.6	(10.5–22.4)	2.7	(0.4–17.8)	—	—	16.2	(10.9–23.5)	—	—
Palm Beach County, FL	23.2	(17.0–30.7)	11.8	(7.6–17.8)	17.4	(13.4–22.3)	18.2	(14.0–23.3)	15.0	(6.1–32.5)	—	—	18.3	(13.9–23.6)	13.2	(5.0–30.6)
Philadelphia, PA	39.5	(31.5–48.1)	13.8	(7.5–24.2)	26.4	(20.4–33.5)	23.1	(17.3–30.1)	36.6	(22.6–53.3)	—	—	25.2	(19.1–32.4)	43.1	(32.8–54.1)
San Diego, CA	38.3	(32.7–44.2)	22.5	(16.2–30.5)	30.7	(26.3–35.5)	32.3	(27.3–37.8)	17.0	(9.4–28.8)	—	—	32.6	(27.8–37.8)	26.8	(12.7–48.0)
San Francisco, CA	35.7	(28.2–44.0)	24.5	(18.1–32.4)	29.6	(24.5–35.2)	30.6	(25.0–36.8)	20.8	(9.1–40.7)	—	—	30.8	(25.3–36.8)	—	—
Shelby County, TN	23.4	(16.1–32.7)	13.0	(8.3–19.8)	18.2	(13.4–24.1)	19.0	(13.6–25.8)	8.8	(3.9–18.6)	—	—	18.7	(13.5–25.3)	10.9	(4.3–24.7)
Median	26.0		15.1		21.5		20.6		17.5		—		20.8		23.1
Range	12.7–41.6		10.7–29.9		14.0–36.3		14.5–39.5		2.7–36.6		—		14.6–36.8		10.9–43.1

* Such as Mirena or ParaGard.
^† Such as Implanon or Nexplanon.
^§ Such as Depo-Provera.
^¶ Such as OrthoEvra.
** Such as NuvaRing.
^†† To prevent pregnancy, among students who were currently sexually active.
^§§ Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^¶¶ 95% confidence interval.
*** Not available.

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TABLE 151. Percentage of high school students who used both a condom during last sexual intercourse and birth control pills; an IUD* or implant;^† or a shot,^§ patch,^¶ or birth control ring** before last sexual intercourse,^†† by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^§§ — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^¶¶	%	CI	%	CI
Total	8.9	(7.2–10.8)	8.7	(6.8–11.1)	8.8	(7.5–10.3)
Race/Ethnicity
White***	12.2	(9.6–15.4)	10.9	(8.3–14.3)	11.6	(9.5–14.0)
Black***	6.0	(3.9–9.2)	6.4	(3.5–11.6)	6.4	(4.7–8.8)
Hispanic	3.8	(2.3–6.3)	4.5	(2.5–8.1)	4.2	(3.0–5.8)
Grade
9	7.2	(4.1–12.5)	4.6	(2.3–9.1)	5.8	(3.4–9.7)
10	9.1	(5.9–13.7)	7.0	(4.5–10.7)	8.1	(5.9–11.0)
11	7.7	(5.1–11.3)	10.2	(6.3–16.1)	8.9	(6.4–12.3)
12	10.2	(7.6–13.7)	10.2	(6.5–15.7)	10.2	(7.8–13.3)
Sexual identity
Heterosexual (straight)	10.2	(8.2–12.6)	8.9	(6.9–11.5)	9.6	(8.1–11.3)
Gay, lesbian, or bisexual	4.3	(2.5–7.4)	5.0	(2.0–11.8)	4.4	(2.8–6.9)
Not sure	2.3	(0.5–9.4)	—^†††	—	3.7	(1.3–10.1)
Sex of sexual contacts
Opposite sex only	10.1	(8.1–12.5)	8.9	(7.0–11.4)	9.5	(8.0–11.1)
Both sexes	4.6	(2.5–8.1)	8.2	(3.5–18.0)	5.1	(3.1–8.2)

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TABLE 152. Percentage of high school students who used both a condom during last sexual intercourse and birth control pills; an IUD* or implant;^† or a shot,^§ patch,^¶ or birth control ring** before last sexual intercourse,^†† by sex, sexual identity, and sex of sexual contacts^§§ — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Both sexes
	%	CI^¶¶	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	15.0	(9.1–23.9)	12.1	(6.6–21.1)	13.8	(9.1–20.5)	—***	—	—	—	—	—	—	—	—	—
Arizona	14.7	(7.1–28.1)	7.7	(3.8–14.9)	11.1	(6.3–18.7)	11.2	(6.3–19.2)	9.8	(3.4–25.2)	—	—	—	—	—	—
Arkansas	13.1	(6.3–25.1)	5.1	(2.5–10.1)	9.2	(5.2–15.8)	8.5	(4.8–14.6)	14.6	(3.9–42.3)	—	—	9.5	(5.0–17.5)	10.6	(2.0–40.5)
California	6.0	(3.2–11.0)	7.4	(4.3–12.4)	6.7	(4.5–10.0)	7.5	(4.9–11.2)	—	—	—	—	7.6	(5.0–11.2)	—	—
Colorado	16.5	(10.9–24.2)	10.0	(4.4–21.3)	13.4	(9.0–19.4)	13.9	(9.2–20.4)	—	—	—	—	—	—	—	—
Connecticut	11.6	(8.6–15.4)	8.2	(4.4–14.8)	10.0	(6.9–14.4)	10.1	(7.1–14.4)	7.7	(2.7–20.2)	—	—	11.1	(7.6–16.0)	1.8	(0.2–13.1)
Delaware	10.0	(6.2–15.5)	8.5	(5.7–12.4)	9.2	(6.5–12.8)	10.7	(7.6–14.9)	5.5	(1.6–17.2)	—	—	10.0	(7.0–14.2)	2.4	(0.7–7.7)
Florida	8.3	(6.2–11.0)	6.7	(5.0–9.1)	7.6	(6.3–9.1)	7.9	(6.5–9.6)	4.2	(1.5–11.4)	10.3	(3.8–25.2)	8.0	(6.6–9.7)	4.6	(1.8–11.4)
Hawaii	5.9	(4.1–8.6)	4.3	(2.4–7.6)	5.5	(4.1–7.3)	5.7	(4.2–7.7)	3.1	(0.5–15.8)	15.8	(3.8–47.3)	5.7	(4.0–7.9)	1.5	(0.4–5.1)
Idaho	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Iowa	14.4	(7.5–25.8)	6.0	(2.2–15.7)	10.8	(5.1–21.5)	13.0	(6.0–25.7)	2.1	(0.3–14.4)	—	—	12.7	(6.0–24.9)	0.0	—
Kansas	14.8	(9.7–21.9)	13.8	(8.4–21.9)	14.3	(9.5–20.9)	—	—	—	—	—	—	—	—	—	—
Kentucky	15.0	(10.7–20.6)	7.7	(4.7–12.5)	11.3	(8.3–15.3)	11.7	(8.3–16.1)	10.7	(5.4–20.0)	—	—	11.4	(8.1–15.7)	8.6	(4.0–17.6)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	20.5	(18.1–23.1)	15.6	(12.4–19.4)	18.2	(16.3–20.3)	19.3	(17.2–21.7)	11.3	(8.0–15.7)	9.9	(3.6–24.4)	19.2	(17.1–21.5)	11.3	(7.2–17.3)
Maryland	10.8	(9.8–12.0)	7.8	(6.8–8.9)	9.4	(8.6–10.2)	9.7	(8.9–10.5)	7.8	(6.0–10.0)	8.2	(4.8–13.5)	—	—	—	—
Massachusetts	18.4	(13.8–24.2)	11.9	(7.8–17.9)	15.5	(11.9–19.8)	16.9	(12.8–21.8)	4.5	(1.5–12.7)	—	—	16.6	(12.3–22.0)	11.2	(4.7–24.4)
Michigan	16.4	(11.8–22.4)	6.3	(2.6–14.5)	12.1	(8.7–16.6)	13.0	(9.2–18.2)	4.3	(2.2–8.2)	—	—	13.2	(9.1–18.7)	5.0	(1.5–15.9)
Missouri	15.4	(11.6–20.1)	7.6	(4.3–13.3)	12.0	(9.4–15.2)	—	—	—	—	—	—	—	—	—	—
Montana	17.4	(14.8–20.3)	11.3	(8.9–14.3)	14.6	(12.8–16.6)	—	—	—	—	—	—	—	—	—	—
Nebraska	13.4	(7.6–22.6)	5.7	(2.5–12.7)	9.7	(6.0–15.1)	10.1	(6.2–15.9)	—	—	—	—	10.3	(6.4–16.3)	—	—
Nevada	8.9	(5.0–15.1)	4.1	(1.6–10.1)	6.5	(4.1–10.4)	8.0	(5.1–12.5)	0.0	—	—	—	6.4	(3.7–10.8)	7.5	(1.7–27.6)
New Hampshire	22.1	(19.6–24.8)	13.2	(11.1–15.7)	17.7	(16.0–19.6)	18.7	(16.8–20.7)	12.2	(8.7–16.8)	11.9	(6.4–21.1)	18.6	(16.8–20.6)	11.5	(7.5–17.3)
New Mexico	12.5	(9.4–16.4)	7.5	(5.2–10.7)	10.1	(8.2–12.3)	11.0	(9.2–13.0)	5.9	(2.9–11.5)	—	—	10.1	(8.1–12.5)	11.2	(5.6–21.2)
New York	14.8	(10.1–21.2)	7.9	(4.8–12.7)	11.9	(8.6–16.3)	11.3	(7.4–16.8)	17.6	(9.8–29.5)	8.8	(2.6–26.4)	11.4	(7.6–16.6)	19.1	(10.2–33.0)
North Carolina	10.5	(6.7–16.0)	7.1	(5.1–9.9)	8.8	(6.2–12.3)	8.7	(6.2–12.1)	9.0	(4.3–18.1)	—	—	9.4	(6.7–13.0)	7.6	(2.8–19.2)
North Dakota	14.9	(11.0–19.8)	7.4	(4.5–11.9)	11.2	(8.4–14.7)	11.1	(8.0–15.0)	15.2	(6.0–33.6)	—	—	—	—	—	—
Oklahoma	11.8	(7.4–18.3)	11.7	(6.1–21.0)	11.7	(8.4–16.1)	11.4	(7.7–16.7)	14.8	(6.0–32.3)	—	—	11.1	(7.6–15.9)	16.1	(5.7–37.8)
Pennsylvania	16.3	(12.3–21.2)	10.0	(7.0–14.1)	13.2	(10.5–16.5)	14.5	(11.6–18.0)	2.7	(0.6–11.7)	—	—	14.2	(11.3–17.7)	5.0	(1.4–16.5)
Rhode Island	13.4	(8.5–20.3)	9.1	(5.4–14.9)	11.2	(8.0–15.3)	12.9	(9.2–17.9)	4.0	(0.8–16.8)	—	—	12.0	(7.7–18.0)	9.5	(4.0–20.8)
South Carolina	9.1	(4.7–16.9)	8.2	(3.6–17.7)	8.8	(5.5–13.8)	10.3	(6.4–16.0)	2.4	(0.3–16.6)	—	—	9.5	(5.9–15.1)	2.9	(0.3–23.3)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	6.1	(3.2–11.3)	5.3	(2.6–10.5)	5.7	(3.6–8.9)	6.0	(3.7–9.6)	4.4	(0.9–18.1)	—	—	5.8	(3.4–9.9)	6.2	(1.6–20.9)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	22.5	(21.0–24.1)	15.1	(13.7–16.6)	18.9	(17.9–20.0)	19.8	(18.7–21.0)	13.7	(11.2–16.7)	15.3	(10.6–21.6)	20.0	(18.9–21.2)	13.0	(10.3–16.3)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	14.7	(9.9–21.3)	9.0	(4.5–17.0)	11.9	(8.8–15.9)	13.2	(9.8–17.5)	0.9	(0.1–7.4)	—	—	13.2	(9.8–17.6)	0.0	—
Wisconsin	14.7	(9.6–21.7)	12.0	(7.0–19.7)	13.3	(9.5–18.4)	13.9	(9.8–19.4)	8.3	(2.9–21.8)	—	—	14.4	(10.2–20.0)	6.1	(1.5–21.6)
Median	14.7		7.9		11.2		11.2		6.8		10.3		11.1		7.5
Range	5.9–22.5		4.1–15.6		5.5–18.9		5.7–19.8		0.0–17.6		8.2–15.8		5.7–20.0		0.0–19.1
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	8.3	(5.3–12.7)	8.7	(5.0–14.8)	8.5	(6.0–11.8)	9.7	(6.8–13.6)	2.8	(0.6–11.3)	—	—	9.0	(6.2–12.8)	—	—
Broward County, FL	3.7	(1.3–10.4)	7.5	(1.9–25.4)	5.6	(2.1–14.4)	3.9	(1.4–10.4)	—	—	—	—	3.8	(1.3–10.4)	—	—
Chicago, IL	7.0	(3.9–12.5)	4.1	(2.0–8.3)	5.7	(3.5–9.1)	6.0	(3.9–9.1)	4.7	(1.1–17.2)	—	—	5.5	(3.3–9.1)	10.1	(3.8–23.9)
Cleveland, OH	8.9	(5.3–14.5)	8.7	(4.7–15.5)	8.7	(5.6–13.2)	10.1	(6.4–15.7)	3.6	(0.9–13.7)	—	—	9.1	(5.9–13.9)	3.9	(1.0–14.8)
DeKalb County, GA	8.0	(4.4–14.4)	6.1	(3.1–11.7)	7.1	(4.1–11.8)	7.9	(4.3–14.1)	6.0	(1.9–17.7)	—	—	7.5	(4.1–13.4)	8.1	(2.3–25.3)
Detroit, MI	9.1	(4.1–19.1)	—	—	7.4	(4.0–13.2)	8.8	(4.7–15.8)	—	—	—	—	7.1	(3.2–14.9)	—	—
District of Columbia	10.8	(8.6–13.5)	4.8	(3.4–6.8)	7.7	(6.4–9.3)	8.0	(6.5–9.9)	5.9	(3.4–10.0)	5.7	(2.1–14.7)	7.5	(6.0–9.3)	12.1	(7.7–18.6)
Duval County, FL	14.3	(10.1–19.8)	6.3	(3.9–10.1)	10.4	(7.9–13.6)	11.0	(8.3–14.4)	7.7	(3.8–15.0)	—	—	11.0	(8.3–14.3)	6.8	(3.1–14.6)
Ft. Worth, TX	4.6	(2.7–7.8)	5.6	(3.2–9.5)	5.1	(3.5–7.4)	5.3	(3.6–7.8)	3.1	(0.8–11.4)	—	—	5.2	(3.5–7.8)	2.4	(0.3–15.4)
Houston, TX	4.8	(2.8–8.1)	6.6	(3.9–10.9)	5.7	(3.8–8.5)	6.0	(3.9–9.1)	2.4	(0.5–10.1)	—	—	6.1	(4.0–9.3)	3.4	(0.8–13.7)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	6.5	(4.3–9.7)	5.2	(3.3–8.2)	6.0	(4.6–7.8)	5.8	(4.2–7.9)	6.4	(2.9–13.6)	—	—	6.0	(4.4–8.2)	5.7	(2.3–13.4)
New York City, NY	7.1	(5.0–9.9)	5.5	(3.8–8.0)	6.3	(5.1–7.7)	5.8	(4.4–7.6)	7.4	(3.9–13.6)	7.1	(3.2–15.0)	6.3	(5.1–7.8)	9.7	(4.9–18.4)
Oakland, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Orange County, FL	5.6	(2.0–14.8)	5.6	(2.7–11.4)	5.6	(2.9–10.3)	6.1	(3.2–11.4)	2.7	(0.4–17.8)	—	—	6.4	(3.3–11.9)	—	—
Palm Beach County, FL	5.0	(2.6–9.3)	6.6	(4.0–10.9)	5.8	(3.8–8.7)	5.8	(3.7–8.9)	8.2	(2.4–24.1)	—	—	6.0	(3.8–9.1)	6.1	(1.4–23.0)
Philadelphia, PA	9.9	(4.7–19.8)	4.3	(1.8–10.1)	7.0	(3.8–12.6)	6.4	(3.2–12.4)	6.1	(1.6–20.2)	—	—	7.5	(4.1–13.4)	0.9	(0.1–7.3)
San Diego, CA	11.6	(7.8–16.9)	9.8	(5.7–16.1)	10.7	(7.5–15.1)	10.6	(7.1–15.5)	9.4	(3.6–22.3)	—	—	10.9	(7.3–15.9)	15.0	(5.2–36.1)
San Francisco, CA	7.5	(4.3–12.8)	8.4	(5.1–13.5)	8.0	(5.6–11.3)	8.3	(5.7–11.9)	1.5	(0.4–5.9)	—	—	8.8	(6.1–12.6)	—	—
Shelby County, TN	6.1	(3.4–10.6)	3.0	(1.3–6.8)	4.5	(2.7–7.6)	5.1	(3.0–8.7)	1.4	(0.3–5.5)	—	—	5.0	(2.9–8.6)	1.0	(0.1–7.1)
Median	7.3		6.1		6.6		6.3		5.3		—		6.7		6.1
Range	3.7–14.3		3.0–9.8		4.5–10.7		3.9–11.0		1.4–9.4		—		3.8–11.0		0.9–15.0

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TABLE 153. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^§	%	CI	%	CI
Total	16.7	(13.8–20.0)	10.5	(8.7–12.6)	13.8	(12.0–15.9)
Race/Ethnicity
White^¶	11.8	(8.8–15.7)	7.7	(5.1–11.5)	10.0	(7.8–12.7)
Black^¶	25.5	(20.4–31.3)	10.8	(6.8–16.7)	17.8	(14.7–21.5)
Hispanic	22.0	(16.6–28.5)	16.1	(12.9–19.9)	19.0	(15.6–23.1)
Grade
9	27.6	(19.3–37.8)	13.8	(8.5–21.5)	20.1	(14.8–26.6)
10	17.2	(12.5–23.1)	12.6	(7.8–19.8)	15.0	(11.4–19.3)
11	15.4	(11.7–20.0)	7.0	(4.8–10.1)	11.5	(8.9–14.6)
12	13.7	(9.9–18.6)	10.7	(8.0–14.3)	12.3	(9.9–15.2)
Sexual identity
Heterosexual (straight)	13.7	(10.9–17.1)	9.5	(7.8–11.7)	11.5	(9.7–13.6)
Gay, lesbian, or bisexual	27.8	(22.4–34.0)	25.9	(14.2–42.6)	27.4	(21.9–33.7)
Not sure	18.6	(11.1–29.6)	24.4	(8.8–52.0)	25.0	(16.5–35.8)
Sex of sexual contacts
Opposite sex only	13.8	(10.8–17.4)	9.5	(7.8–11.6)	11.5	(9.7–13.7)
Both sexes	22.6	(17.8–28.4)	10.2	(3.4–26.8)	20.8	(15.7–27.0)

* Among the 28.7% of students nationwide who were currently sexually active.
^† Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Non-Hispanic.

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TABLE 154. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Both sexes
	%	CI^§	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	16.5	(9.4–27.3)	15.6	(8.7–26.3)	16.3	(11.1–23.3)	—^¶	—	—	—	—	—	—	—	—	—
Arizona	20.4	(12.6–31.2)	13.7	(9.4–19.5)	16.9	(12.2–22.9)	14.3	(9.1–21.8)	30.3	(16.6–48.7)	—	—	—	—	—	—
Arkansas	18.8	(12.7–27.0)	20.5	(14.5–28.0)	19.8	(15.5–24.9)	17.6	(13.1–23.3)	33.4	(18.0–53.4)	—	—	17.4	(12.8–23.2)	31.5	(12.1–60.5)
California	12.4	(6.4–22.7)	9.5	(5.7–15.5)	10.8	(7.4–15.4)	9.0	(5.8–13.8)	—	—	—	—	8.3	(5.4–12.5)	—	—
Colorado	12.3	(6.6–21.7)	11.0	(5.0–22.5)	12.1	(7.1–20.0)	10.9	(6.4–18.1)	—	—	—	—	—	—	—	—
Connecticut	11.2	(7.1–17.3)	9.0	(6.2–13.0)	10.2	(7.1–14.4)	8.2	(5.4–12.1)	24.7	(13.1–41.6)	—	—	8.2	(5.4–12.4)	20.4	(9.3–39.0)
Delaware	17.6	(13.2–23.2)	15.6	(11.2–21.3)	16.5	(13.1–20.5)	14.3	(11.1–18.2)	26.3	(14.4–43.1)	—	—	14.8	(11.6–18.8)	20.8	(10.5–37.0)
Florida	15.9	(12.9–19.5)	10.7	(8.3–13.6)	13.3	(11.7–15.1)	10.7	(9.1–12.6)	29.1	(21.9–37.7)	21.9	(11.3–38.0)	10.4	(8.7–12.2)	23.8	(16.1–33.7)
Hawaii	16.4	(11.7–22.6)	14.7	(10.6–20.1)	15.8	(12.6–19.6)	14.5	(11.1–18.7)	22.2	(15.4–30.9)	13.4	(5.8–27.9)	14.3	(11.1–18.2)	14.6	(7.6–26.1)
Idaho	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Iowa	8.9	(4.4–17.2)	13.5	(9.3–19.2)	11.2	(7.3–16.8)	6.2	(3.8–10.0)	39.6	(22.9–59.0)	—	—	8.6	(5.6–12.8)	21.7	(7.7–47.7)
Kansas	9.6	(5.5–16.2)	14.5	(8.0–24.7)	12.0	(8.0–17.5)	—	—	—	—	—	—	—	—	—	—
Kentucky	15.4	(11.4–20.4)	18.2	(13.3–24.4)	16.5	(13.4–20.1)	13.5	(9.7–18.4)	34.4	(20.9–50.9)	—	—	14.0	(10.4–18.5)	37.9	(21.8–57.3)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	7.8	(6.4–9.5)	9.6	(7.7–11.8)	8.7	(7.4–10.1)	6.0	(5.0–7.3)	24.9	(20.7–29.7)	20.6	(14.8–27.9)	5.6	(4.5–7.0)	20.4	(16.2–25.4)
Maryland	17.2	(15.9–18.6)	13.9	(12.6–15.2)	15.8	(14.8–16.8)	12.3	(11.3–13.4)	31.8	(29.0–34.8)	27.7	(21.4–35.1)	—	—	—	—
Massachusetts	9.3	(6.0–14.1)	9.8	(6.8–14.1)	9.6	(7.1–12.8)	7.1	(4.7–10.4)	28.5	(18.2–41.6)	—	—	6.4	(4.5–9.0)	12.2	(5.9–23.4)
Michigan	13.1	(8.0–20.7)	16.3	(11.0–23.6)	14.7	(10.3–20.5)	13.6	(7.9–22.3)	25.1	(15.9–37.3)	—	—	12.9	(7.7–20.6)	17.5	(7.8–34.7)
Missouri	14.9	(9.9–22.0)	9.8	(4.1–21.4)	12.7	(8.2–19.2)	—	—	—	—	—	—	—	—	—	—
Montana	8.7	(6.7–11.2)	8.7	(6.2–12.1)	8.7	(6.9–11.0)	—	—	—	—	—	—	—	—	—	—
Nebraska	7.4	(3.6–14.6)	6.5	(3.3–12.6)	7.0	(4.1–11.6)	6.0	(3.2–10.9)	13.3	(4.4–33.9)	—	—	7.2	(4.2–12.1)	—	—
Nevada	21.0	(16.1–26.9)	16.5	(11.6–22.9)	18.9	(15.3–23.2)	13.2	(9.1–18.6)	44.1	(34.5–54.1)	—	—	13.4	(9.5–18.7)	41.7	(26.6–58.4)
New Hampshire	7.0	(5.5–8.7)	6.1	(4.9–7.7)	6.6	(5.7–7.7)	4.3	(3.4–5.3)	19.1	(14.4–24.8)	26.5	(17.5–37.9)	4.2	(3.4–5.3)	16.6	(12.4–21.9)
New Mexico	17.8	(14.1–22.2)	14.2	(11.8–17.1)	16.1	(13.5–19.0)	13.0	(10.1–16.6)	31.1	(24.6–38.5)	—	—	13.0	(10.4–16.1)	28.0	(17.5–41.5)
New York	15.3	(11.3–20.4)	15.7	(11.5–21.1)	15.6	(12.0–19.9)	12.3	(9.1–16.5)	31.8	(21.2–44.8)	27.1	(17.8–39.0)	12.9	(9.6–17.1)	17.2	(11.7–24.5)
North Carolina	18.4	(12.8–25.7)	11.6	(7.4–17.7)	15.1	(10.7–20.9)	12.8	(8.3–19.3)	27.9	(15.9–44.3)	—	—	12.4	(7.6–19.5)	25.4	(15.0–39.8)
North Dakota	11.7	(8.0–16.8)	6.1	(3.5–10.4)	9.3	(7.0–12.3)	7.3	(5.2–10.2)	32.9	(20.2–48.8)	—	—	—	—	—	—
Oklahoma	19.5	(13.6–27.0)	9.0	(4.7–16.8)	15.0	(11.9–18.8)	14.2	(10.6–18.6)	18.1	(9.7–31.1)	—	—	15.0	(11.7–18.9)	14.9	(6.0–32.4)
Pennsylvania	11.9	(8.7–16.0)	11.3	(7.2–17.1)	11.8	(8.8–15.6)	9.5	(6.8–13.0)	30.9	(18.0–47.6)	—	—	9.6	(7.2–12.8)	17.1	(8.7–31.1)
Rhode Island	11.1	(6.0–19.6)	12.2	(6.8–21.1)	11.6	(7.2–18.0)	10.2	(5.9–17.2)	18.9	(7.8–39.1)	—	—	9.6	(5.0–17.8)	18.1	(6.2–42.8)
South Carolina	20.6	(15.9–26.4)	7.5	(3.1–17.5)	15.1	(11.1–20.2)	11.6	(7.9–16.8)	30.1	(16.9–47.8)	—	—	11.2	(7.5–16.4)	30.4	(14.4–53.2)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	24.5	(18.1–32.3)	21.7	(16.2–28.6)	23.1	(18.9–27.9)	21.5	(17.2–26.6)	37.9	(25.9–51.5)	—	—	20.3	(15.7–25.8)	39.3	(24.5–56.3)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	6.6	(5.8–7.6)	7.6	(6.6–8.7)	7.2	(6.5–7.9)	5.1	(4.5–5.7)	21.0	(17.9–24.4)	14.2	(9.9–20.1)	4.7	(4.1–5.3)	17.4	(14.3–21.0)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	12.9	(8.0–20.1)	15.8	(9.9–24.3)	14.2	(10.7–18.7)	13.0	(10.2–16.4)	27.1	(11.5–51.4)	—	—	12.7	(9.9–16.1)	22.8	(9.2–46.2)
Wisconsin	5.9	(3.1–11.0)	9.3	(5.4–15.4)	7.8	(5.3–11.2)	5.9	(3.7–9.4)	20.7	(10.7–36.3)	—	—	6.2	(3.9–9.6)	5.9	(1.6–19.3)
Median	13.1		11.6		13.3		11.6		28.5		21.9		11.2		20.4
Range	5.9–24.5		6.1–21.7		6.6–23.1		4.3–21.5		13.3–44.1		13.4–27.7		4.2–20.3		5.9–41.7
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	19.3	(13.4–26.9)	9.5	(5.3–16.7)	14.5	(10.3–19.9)	10.5	(6.9–15.7)	39.0	(25.7–54.1)	—	—	10.6	(7.0–15.6)	—	—
Broward County, FL	16.4	(9.3–27.2)	8.9	(4.8–16.0)	12.6	(8.0–19.3)	13.5	(8.1–21.6)	—	—	—	—	14.1	(8.7–22.2)	—	—
Chicago, IL	16.5	(12.2–22.1)	20.0	(13.5–28.6)	18.2	(14.0–23.4)	17.0	(12.4–22.9)	27.4	(12.7–49.5)	—	—	16.9	(12.9–21.9)	15.0	(5.7–33.8)
Cleveland, OH	23.8	(18.0–30.9)	15.1	(9.4–23.3)	19.8	(15.5–25.0)	16.0	(11.4–22.0)	33.6	(21.2–48.8)	—	—	15.3	(11.0–20.9)	30.8	(17.5–48.4)
DeKalb County, GA	27.8	(20.3–36.7)	14.9	(9.8–21.9)	21.1	(16.6–26.5)	16.4	(12.4–21.2)	44.8	(30.9–59.6)	—	—	17.1	(13.2–21.9)	21.8	(11.0–38.7)
Detroit, MI	32.4	(23.1–43.2)	—	—	27.1	(20.1–35.5)	23.9	(16.9–32.5)	—	—	—	—	25.1	(18.3–33.4)	—	—
District of Columbia	24.6	(21.6–27.9)	19.9	(17.0–23.2)	22.0	(19.9–24.3)	18.8	(16.6–21.3)	39.6	(33.4–46.1)	27.3	(15.3–43.8)	18.6	(16.4–21.1)	31.1	(24.6–38.5)
Duval County, FL	22.9	(18.3–28.2)	14.6	(10.5–19.9)	18.9	(15.8–22.6)	14.7	(11.8–18.2)	33.7	(25.6–43.0)	—	—	13.2	(10.5–16.6)	25.7	(18.0–35.4)
Ft. Worth, TX	22.7	(18.2–27.9)	20.1	(15.9–25.2)	21.4	(18.2–25.0)	17.8	(14.7–21.3)	48.4	(36.3–60.6)	—	—	18.2	(15.0–22.0)	34.3	(21.3–50.2)
Houston, TX	29.7	(24.5–35.4)	17.4	(12.8–23.2)	23.2	(19.5–27.5)	21.0	(17.1–25.7)	32.7	(23.3–43.8)	—	—	20.2	(16.2–24.8)	33.3	(21.2–48.1)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	21.5	(16.4–27.7)	18.2	(13.8–23.6)	19.9	(16.1–24.3)	18.3	(14.5–22.8)	28.8	(19.4–40.5)	—	—	16.6	(13.3–20.5)	31.9	(18.7–48.8)
New York City, NY	27.9	(23.6–32.5)	19.9	(16.3–24.1)	24.1	(21.2–27.1)	22.9	(19.5–26.8)	29.6	(23.2–36.9)	24.9	(17.4–34.2)	22.1	(19.0–25.6)	21.6	(14.9–30.3)
Oakland, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Orange County, FL	21.8	(15.5–29.7)	10.6	(6.3–17.3)	15.9	(12.1–20.7)	12.9	(9.5–17.1)	32.7	(18.3–51.5)	—	—	13.0	(9.5–17.6)	—	—
Palm Beach County, FL	14.8	(9.4–22.4)	16.2	(11.8–21.7)	15.6	(11.8–20.2)	14.6	(10.5–19.9)	25.5	(14.3–41.2)	—	—	13.2	(9.7–17.8)	28.2	(14.9–47.0)
Philadelphia, PA	22.8	(16.8–30.1)	14.8	(7.6–26.8)	18.6	(14.3–23.9)	16.3	(11.0–23.5)	36.1	(25.8–47.9)	—	—	15.5	(10.3–22.6)	30.0	(18.9–43.9)
San Diego, CA	14.3	(9.7–20.6)	16.9	(11.3–24.6)	15.6	(11.8–20.5)	13.9	(10.3–18.4)	30.9	(19.5–45.4)	—	—	12.6	(9.6–16.5)	17.6	(5.4–44.4)
San Francisco, CA	19.1	(12.8–27.5)	17.6	(11.0–27.0)	18.2	(13.6–23.9)	16.7	(11.7–23.3)	26.7	(13.1–46.9)	—	—	14.8	(10.1–21.1)	—	—
Shelby County, TN	19.9	(14.9–25.9)	14.1	(9.6–20.2)	17.1	(13.4–21.6)	16.0	(12.3–20.5)	25.5	(15.6–38.8)	—	—	15.9	(12.1–20.7)	7.1	(2.0–22.2)
Median	22.2		16.2		18.7		16.3		32.7		—		15.7		28.2
Range	14.3–32.4		8.9–20.1		12.6–27.1		10.5–23.9		25.5–48.4		—		10.6–25.1		7.1–34.3

* Among students who were currently sexually active.
^† Students who had no sexual contact and students who had sexual contact with only the same sex are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Not available.

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TABLE 155. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^§	%	CI	%	CI
Total	15.9	(14.1–17.9)	21.6	(19.3–24.2)	18.8	(17.1–20.5)
Race/Ethnicity
White^¶	16.6	(14.2–19.4)	20.9	(17.6–24.7)	18.7	(16.6–21.0)
Black^¶	16.0	(10.7–23.1)	23.9	(19.3–29.2)	20.1	(16.8–23.8)
Hispanic	12.6	(9.7–16.2)	22.6	(18.0–27.8)	17.7	(14.5–21.4)
Grade
9	17.8	(12.2–25.3)	24.2	(17.2–32.9)	21.3	(15.9–27.8)
10	14.1	(10.3–19.1)	25.6	(20.1–31.9)	19.7	(16.6–23.2)
11	13.8	(10.9–17.3)	14.8	(11.4–19.0)	14.2	(12.1–16.6)
12	17.5	(15.0–20.3)	23.3	(18.9–28.5)	20.3	(17.8–23.2)
Sexual identity
Heterosexual (straight)	14.1	(12.1–16.4)	21.3	(18.8–24.2)	18.0	(16.0–20.1)
Gay, lesbian, or bisexual	20.2	(15.4–26.1)	21.5	(10.1–39.8)	20.3	(16.0–25.3)
Not sure	30.7	(17.8–47.6)	35.1	(14.2–63.9)	34.6	(22.5–49.1)
Sex of sexual contacts
Opposite sex only	13.2	(11.2–15.4)	21.7	(19.0–24.7)	17.7	(15.7–20.0)
Same sex only or both sexes	26.1	(19.6–33.7)	20.0	(9.4–37.5)	24.8	(18.7–32.1)

* Among the 28.7% of students nationwide who were currently sexually active.
^† Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Non-Hispanic.

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TABLE 156. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Same sex only or both sexes
	%	CI^§	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	21.4	(15.2–29.2)	19.1	(9.4–34.8)	20.6	(14.8–28.0)	—^¶	—	—	—	—	—	—	—	—	—
Arizona	16.4	(9.5–26.8)	20.1	(12.5–30.6)	18.2	(12.1–26.6)	15.2	(10.4–21.7)	34.4	(15.1–60.6)	—	—	—	—	—	—
Arkansas	12.2	(6.3–22.2)	21.9	(15.5–30.2)	16.9	(12.5–22.5)	16.8	(12.6–21.9)	19.8	(10.4–34.4)	—	—	16.6	(12.3–22.1)	21.3	(11.3–36.4)
California	14.0	(7.1–25.7)	17.8	(9.8–30.0)	16.0	(9.6–25.4)	15.5	(8.9–25.6)	—	—	—	—	16.2	(9.5–26.1)	—	—
Colorado	21.6	(13.8–32.1)	20.9	(13.6–30.6)	21.0	(14.8–28.8)	20.0	(13.5–28.6)	22.1	(11.2–38.9)	—	—	—	—	—	—
Connecticut	18.4	(12.6–26.1)	19.4	(13.8–26.6)	19.1	(14.9–24.1)	17.0	(12.9–22.0)	26.6	(18.0–37.4)	—	—	17.0	(12.8–22.3)	27.6	(17.2–41.2)
Delaware	15.1	(10.1–21.9)	26.4	(21.5–31.9)	20.3	(16.2–25.1)	20.3	(16.5–24.8)	15.7	(8.2–28.1)	—	—	19.7	(15.5–24.7)	28.0	(17.4–41.8)
Florida	16.9	(14.2–20.0)	23.5	(20.1–27.2)	20.4	(18.1–23.0)	18.4	(15.9–21.2)	22.9	(16.5–31.0)	41.8	(28.1–56.9)	18.7	(16.0–21.6)	27.9	(21.0–36.0)
Hawaii	20.2	(15.3–26.2)	26.3	(20.9–32.7)	22.8	(19.7–26.1)	20.2	(16.9–23.9)	33.3	(20.8–48.8)	37.3	(19.9–58.8)	20.0	(16.6–24.0)	37.5	(25.5–51.3)
Idaho	13.4	(9.1–19.5)	19.7	(13.7–27.5)	16.5	(12.5–21.5)	—	—	—	—	—	—	—	—	—	—
Illinois	18.0	(12.8–24.8)	18.4	(11.8–27.6)	18.0	(13.3–23.9)	16.5	(11.7–22.9)	25.8	(17.5–36.3)	26.3	(6.9–63.3)	15.3	(11.0–20.8)	35.4	(24.4–48.1)
Iowa	17.3	(10.8–26.5)	17.6	(11.0–26.9)	17.7	(12.4–24.7)	14.1	(11.0–17.8)	20.9	(8.8–42.2)	—	—	15.0	(11.2–19.9)	24.3	(11.2–44.9)
Kansas	18.8	(13.5–25.4)	23.8	(17.6–31.4)	21.2	(16.7–26.5)	—	—	—	—	—	—	—	—	—	—
Kentucky	17.3	(11.7–24.8)	17.9	(13.6–23.1)	17.5	(13.4–22.5)	15.7	(11.5–21.1)	25.2	(14.5–40.1)	—	—	15.2	(11.1–20.4)	32.7	(18.8–50.5)
Louisiana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maine	13.9	(11.7–16.5)	17.7	(14.7–21.2)	15.7	(13.6–18.1)	14.0	(12.0–16.3)	22.2	(16.7–28.7)	43.6	(32.5–55.5)	14.2	(12.2–16.4)	23.8	(18.7–29.9)
Maryland	19.7	(18.2–21.4)	22.6	(21.0–24.3)	21.2	(20.0–22.5)	19.0	(17.8–20.2)	28.6	(25.2–32.3)	40.3	(32.6–48.4)	—	—	—	—
Massachusetts	18.2	(13.8–23.7)	17.9	(13.3–23.7)	18.2	(15.8–21.0)	18.0	(15.3–21.1)	22.2	(14.9–31.8)	—	—	17.1	(14.1–20.5)	24.6	(15.9–36.0)
Michigan	19.3	(14.0–25.9)	20.9	(14.3–29.6)	19.9	(16.4–24.0)	16.6	(12.9–21.0)	37.7	(23.0–55.1)	—	—	17.1	(13.7–21.1)	35.6	(21.9–52.1)
Missouri	14.3	(9.7–20.5)	17.0	(12.8–22.2)	15.5	(11.7–20.2)	—	—	—	—	—	—	—	—	—	—
Montana	15.4	(12.5–18.8)	20.5	(17.3–24.0)	17.8	(15.6–20.1)	—	—	—	—	—	—	—	—	—	—
Nebraska	12.3	(6.0–23.5)	15.2	(9.3–23.8)	13.7	(9.3–19.8)	11.6	(7.8–17.0)	—	—	—	—	12.1	(8.2–17.5)	24.8	(7.9–55.8)
Nevada	19.5	(16.0–23.5)	18.3	(12.5–25.9)	19.2	(15.3–23.8)	18.6	(14.1–24.1)	18.8	(9.9–32.8)	—	—	16.6	(12.3–22.0)	27.6	(16.7–42.2)
New Hampshire	16.3	(14.3–18.6)	20.4	(17.9–23.1)	18.7	(17.0–20.4)	16.8	(15.1–18.7)	26.9	(21.8–32.6)	42.3	(31.3–54.0)	16.2	(14.6–18.1)	35.8	(30.1–41.9)
New Mexico	17.3	(14.4–20.8)	21.5	(17.1–26.5)	19.5	(16.5–23.0)	17.1	(14.4–20.3)	26.2	(19.5–34.3)	—	—	17.7	(14.4–21.5)	31.0	(22.7–40.8)
New York	14.2	(10.2–19.5)	18.5	(13.3–25.1)	16.2	(12.0–21.4)	14.9	(10.8–20.0)	22.1	(12.5–36.0)	22.1	(13.8–33.4)	13.5	(9.7–18.5)	30.6	(19.1–45.3)
North Carolina	15.1	(10.9–20.4)	22.3	(17.5–28.1)	18.7	(15.6–22.3)	18.0	(14.7–21.7)	21.7	(13.7–32.7)	—	—	18.0	(15.3–21.1)	22.0	(14.0–32.7)
North Dakota	18.6	(14.0–24.2)	23.2	(17.6–30.0)	20.7	(17.2–24.8)	18.4	(14.9–22.6)	42.2	(28.0–57.9)	—	—	—	—	—	—
Oklahoma	15.1	(11.2–20.2)	22.7	(14.9–33.0)	18.3	(14.0–23.6)	18.0	(13.2–24.0)	21.9	(10.2–41.0)	—	—	18.1	(13.3–24.0)	20.6	(9.0–40.6)
Pennsylvania	14.4	(10.2–19.9)	17.4	(13.4–22.2)	16.3	(13.6–19.3)	15.7	(13.1–18.6)	20.4	(10.5–35.8)	—	—	15.5	(12.6–19.1)	17.5	(10.5–27.7)
Rhode Island	18.5	(13.6–24.6)	15.5	(7.9–28.3)	17.3	(11.8–24.8)	15.5	(9.1–25.1)	23.0	(16.8–30.7)	—	—	15.9	(9.6–25.1)	23.4	(12.8–39.0)
South Carolina	18.5	(13.6–24.7)	13.4	(6.9–24.3)	16.6	(12.6–21.6)	14.9	(10.6–20.6)	21.5	(8.6–44.2)	—	—	12.7	(8.8–18.2)	31.8	(16.3–52.9)
Tennessee	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Texas	18.2	(14.8–22.2)	20.0	(14.6–26.8)	19.1	(16.4–22.3)	18.5	(15.1–22.4)	18.1	(8.4–34.8)	—	—	18.8	(15.7–22.2)	22.3	(12.8–36.1)
Utah	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	17.1	(15.7–18.5)	22.4	(20.9–24.0)	19.9	(18.9–21.0)	17.8	(16.8–18.9)	29.5	(26.2–33.1)	39.1	(32.3–46.4)	17.2	(16.1–18.2)	36.6	(33.0–40.4)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	12.8	(8.8–18.3)	17.5	(12.3–24.1)	15.1	(11.5–19.7)	14.3	(10.8–18.6)	23.5	(8.9–49.1)	—	—	14.4	(11.0–18.8)	21.7	(10.4–39.6)
Wisconsin	13.9	(10.4–18.4)	20.1	(15.1–26.4)	17.0	(13.9–20.7)	15.7	(12.1–20.1)	20.7	(7.8–44.7)	—	—	15.6	(12.7–19.0)	27.7	(14.0–47.5)
Median	17.1		20.0		18.2		16.8		22.6		39.7		16.4		27.6
Range	12.2–21.6		13.4–26.4		13.7–22.8		11.6–20.3		15.7–42.2		22.1–43.6		12.1–20.0		17.5–37.5
Large urban school district surveys
Baltimore, MD	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Boston, MA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Broward County, FL	28.3	(17.2–42.8)	16.3	(6.8–34.2)	22.3	(13.4–34.6)	23.5	(14.2–36.3)	—	—	—	—	20.3	(12.1–31.9)	—	—
Chicago, IL	13.7	(9.0–20.3)	14.8	(8.9–23.5)	14.1	(9.8–19.9)	13.3	(8.9–19.4)	24.5	(15.2–37.1)	—	—	12.8	(8.5–18.9)	24.4	(13.2–40.8)
Cleveland, OH	16.8	(12.4–22.3)	26.0	(17.8–36.3)	20.9	(16.3–26.3)	21.1	(15.7–27.7)	20.0	(11.2–33.3)	—	—	18.0	(12.7–24.8)	31.4	(21.6–43.1)
DeKalb County, GA	15.8	(10.3–23.5)	16.7	(11.5–23.6)	16.3	(12.1–21.6)	14.4	(10.2–20.0)	22.3	(12.5–36.6)	—	—	13.9	(9.9–19.2)	26.9	(15.8–42.0)
Detroit, MI	11.4	(8.0–15.9)	—	—	17.6	(13.6–22.6)	18.9	(14.3–24.4)	—	—	—	—	20.3	(15.2–26.6)	8.2	(3.0–20.6)
District of Columbia	17.4	(14.8–20.3)	20.7	(17.9–23.8)	19.2	(17.3–21.3)	18.2	(16.1–20.5)	23.7	(18.7–29.6)	25.0	(15.0–38.5)	17.0	(14.9–19.3)	28.5	(23.5–33.9)
Duval County, FL	20.8	(16.6–25.9)	19.3	(14.8–24.6)	20.4	(17.1–24.0)	18.3	(14.6–22.7)	25.8	(18.5–34.8)	—	—	17.5	(14.0–21.8)	26.7	(20.1–34.5)
Ft. Worth, TX	12.6	(9.3–16.9)	14.7	(11.1–19.2)	14.0	(11.3–17.2)	12.8	(10.2–16.1)	22.8	(13.8–35.3)	—	—	11.7	(9.1–15.0)	27.7	(17.7–40.6)
Houston, TX	16.9	(12.2–22.9)	19.5	(15.2–24.5)	18.2	(14.6–22.5)	15.7	(12.1–20.3)	24.0	(15.9–34.5)	—	—	14.8	(11.5–18.9)	33.5	(21.7–47.8)
Los Angeles, CA	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Miami-Dade County, FL	14.3	(11.2–18.2)	20.9	(16.7–26.0)	17.4	(14.7–20.5)	17.0	(14.4–19.9)	19.0	(11.3–30.1)	—	—	16.2	(13.7–19.2)	24.9	(16.6–35.5)
New York City, NY	13.3	(9.8–17.8)	19.1	(15.5–23.3)	16.3	(13.5–19.6)	14.4	(11.6–17.8)	21.4	(13.8–31.7)	22.5	(14.4–33.4)	14.0	(11.4–17.1)	26.5	(18.5–36.4)
Oakland, CA	21.6	(14.5–30.8)	26.1	(18.7–35.1)	24.1	(18.6–30.7)	24.8	(19.2–31.4)	17.2	(7.2–35.7)	—	—	24.3	(18.6–31.1)	25.9	(13.1–44.7)
Orange County, FL	19.4	(13.3–27.6)	19.8	(13.3–28.4)	19.5	(14.8–25.3)	19.5	(14.3–26.1)	16.9	(7.6–33.4)	—	—	19.1	(14.1–25.5)	22.5	(12.4–37.4)
Palm Beach County, FL	10.9	(6.7–17.1)	26.7	(20.5–34.0)	19.0	(15.1–23.5)	16.9	(13.3–21.3)	23.3	(12.3–39.7)	—	—	16.0	(12.4–20.5)	36.0	(21.7–53.4)
Philadelphia, PA	11.8	(7.6–17.9)	11.6	(6.7–19.3)	11.6	(7.7–17.1)	10.2	(6.4–15.7)	17.5	(6.9–37.7)	—	—	9.9	(5.9–16.0)	21.3	(10.7–38.1)
San Diego, CA	19.3	(14.4–25.3)	20.5	(13.6–29.7)	20.0	(15.3–25.6)	18.8	(13.9–25.1)	31.6	(21.3–44.2)	—	—	16.3	(11.7–22.2)	40.7	(26.7–56.3)
San Francisco, CA	19.9	(13.1–29.1)	24.3	(17.9–32.1)	22.4	(17.1–28.8)	22.7	(17.2–29.4)	27.2	(12.6–49.1)	—	—	20.3	(15.3–26.6)	35.1	(18.1–56.9)
Shelby County, TN	16.9	(11.9–23.5)	23.2	(16.3–31.9)	20.0	(15.5–25.6)	18.9	(14.0–25.0)	28.3	(17.3–42.7)	—	—	19.7	(14.6–26.0)	21.8	(12.9–34.4)
Median	16.8		19.8		19.1		18.2		23.0		—		16.7		26.7
Range	10.9–28.3		11.6–26.7		11.6–24.1		10.2–24.8		16.9–31.6		—		9.9–24.3		8.2–40.7

* Among students who were currently sexually active.
^† Students who had no sexual contact are excluded from the analyses by sex of sexual contacts.
^§ 95% confidence interval.
^¶ Not available.

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TABLE 157. Percentage of high school students who were ever tested for human immunodeficiency virus (HIV),* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts — United States, Youth Risk Behavior Survey, 2017
Category	Sex				Total
	Female		Male		Total
	%	CI^†	%	CI	%	CI
Total	10.5	(9.1–12.1)	8.1	(7.2–9.1)	9.3	(8.4–10.3)
Race/Ethnicity
White^§	8.8	(7.0–11.1)	6.9	(5.9–8.0)	7.9	(6.8–9.2)
Black^§	16.6	(13.3–20.5)	13.7	(10.2–18.1)	15.2	(12.4–18.6)
Hispanic	10.1	(8.5–12.1)	7.7	(5.9–9.9)	8.9	(7.3–10.7)
Grade
9	6.6	(5.3–8.3)	5.7	(4.4–7.4)	6.2	(5.1–7.4)
10	8.5	(6.8–10.6)	7.8	(6.2–9.8)	8.2	(6.9–9.6)
11	11.6	(9.5–14.2)	9.0	(6.8–11.9)	10.3	(8.7–12.2)
12	15.8	(13.3–18.7)	10.2	(8.4–12.2)	13.2	(11.4–15.2)
Sexual identity
Heterosexual (straight)	10.5	(9.2–11.9)	7.9	(6.9–9.0)	9.1	(8.1–10.2)
Gay, lesbian, or bisexual	14.7	(11.7–18.2)	11.5	(7.8–16.6)	14.0	(11.7–16.6)
Not sure	6.5	(3.1–13.3)	7.3	(3.8–13.7)	7.4	(4.6–11.8)
Sex of sexual contacts
Opposite sex only	15.6	(13.4–18.0)	11.3	(9.9–12.8)	13.2	(11.8–14.8)
Same sex only or both sexes	22.0	(18.0–26.7)	15.1	(11.0–20.5)	20.2	(16.8–24.2)
No sexual contact	4.4	(3.4–5.7)	2.7	(2.0–3.7)	3.6	(2.9–4.5)

* Not counting tests done if they donated blood.
^† 95% confidence interval.
^§ Non-Hispanic.

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TABLE 158. Percentage of high school students who were ever tested for human immunodeficiency virus (HIV),* by sex, sexual identity, and sex of sexual contacts — selected U.S. sites, Youth Risk Behavior Surveys, 2017
Site	Sex				Total		Sexual identity						Sex of sexual contacts
	Female		Male		Total		Heterosexual (straight)		Gay, lesbian, or bisexual		Not sure		Opposite sex only		Same sex only or both sexes		No sexual contact
	%	CI^†	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI	%	CI
State surveys
Alaska	—^§	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Arizona	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Arkansas	26.1	(13.7–43.9)	21.3	(14.1–30.8)	23.8	(14.0–37.5)	21.1	(11.9–34.7)	40.6	(26.1–57.0)	20.7	(10.1–37.8)	23.2	(15.4–33.5)	54.3	(33.7–73.6)	6.4	(4.6–8.8)
California	10.0	(7.6–13.1)	10.9	(7.7–15.2)	10.5	(8.3–13.2)	10.2	(8.1–12.7)	14.9	(8.0–26.0)	5.7	(1.3–22.4)	13.0	(10.2–16.5)	23.0	(13.1–37.2)	5.0	(3.4–7.2)
Colorado	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Connecticut	12.0	(9.9–14.4)	11.5	(9.9–13.3)	11.8	(10.3–13.4)	11.3	(10.0–12.7)	15.3	(10.7–21.4)	11.8	(6.8–19.6)	16.0	(13.9–18.3)	17.8	(11.5–26.7)	6.0	(4.3–8.2)
Delaware	16.6	(13.9–19.7)	10.3	(8.4–12.6)	13.5	(11.7–15.6)	12.4	(10.6–14.5)	20.4	(14.9–27.2)	18.3	(9.3–33.0)	19.1	(16.6–21.9)	28.6	(21.1–37.5)	4.2	(2.9–6.2)
Florida	12.0	(10.3–14.0)	11.9	(10.3–13.8)	12.0	(10.6–13.6)	11.4	(10.0–13.1)	16.0	(13.0–19.5)	12.7	(8.4–18.7)	15.7	(13.7–17.9)	23.2	(18.6–28.5)	6.5	(5.5–7.7)
Hawaii	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Idaho	11.2	(9.3–13.5)	10.4	(7.9–13.6)	10.9	(8.8–13.3)	—	—	—	—	—	—	—	—	—	—	—	—
Illinois	13.9	(11.6–16.6)	17.8	(15.1–20.9)	15.8	(13.8–18.0)	14.8	(12.9–16.9)	27.2	(19.6–36.3)	10.9	(4.9–22.4)	18.8	(15.9–22.0)	37.0	(23.3–53.1)	8.2	(6.2–10.7)
Iowa	10.5	(7.7–14.2)	11.0	(8.7–13.8)	11.0	(8.7–13.6)	9.6	(7.7–12.1)	22.5	(13.7–34.6)	17.2	(6.8–37.2)	10.2	(8.3–12.6)	28.6	(21.9–36.4)	5.7	(3.3–9.7)
Kansas	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Kentucky	10.3	(7.9–13.3)	12.0	(9.3–15.4)	11.3	(9.2–13.8)	10.6	(8.4–13.3)	14.5	(9.0–22.5)	18.0	(9.1–32.6)	13.0	(9.7–17.1)	20.1	(13.7–28.4)	5.3	(3.7–7.5)
Louisiana	22.1	(17.2–27.9)	22.7	(18.4–27.7)	22.5	(18.6–27.0)	—	—	—	—	—	—	—	—	—	—	—	—
Maine	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Maryland	14.0	(13.2–14.8)	16.1	(15.3–17.0)	15.2	(14.6–15.9)	14.1	(13.5–14.7)	21.3	(19.7–23.0)	14.7	(12.6–17.1)	—	—	—	—	—	—
Massachusetts	10.8	(9.2–12.7)	10.1	(8.2–12.5)	10.5	(9.0–12.1)	10.5	(9.0–12.1)	12.7	(9.4–16.9)	6.3	(3.0–12.8)	14.7	(12.4–17.4)	17.7	(13.5–22.8)	5.0	(3.7–6.6)
Michigan	13.3	(10.0–17.5)	11.8	(9.0–15.4)	12.5	(10.2–15.2)	11.6	(9.1–14.7)	18.4	(10.8–29.4)	17.9	(9.4–31.5)	16.8	(13.6–20.6)	27.3	(20.0–36.1)	4.5	(2.7–7.3)
Missouri	12.4	(8.8–17.3)	14.8	(12.3–17.7)	13.7	(11.1–16.7)	—	—	—	—	—	—	—	—	—	—	—	—
Montana	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Nebraska	8.0	(5.9–10.8)	8.8	(6.5–11.7)	8.8	(6.9–11.1)	7.6	(5.8–9.8)	17.3	(11.6–25.0)	16.0	(7.7–30.3)	9.2	(6.5–13.0)	15.7	(10.0–23.7)	4.9	(3.0–7.9)
Nevada	8.7	(6.5–11.6)	8.7	(7.0–10.8)	8.9	(7.2–11.0)	8.7	(7.0–10.7)	9.9	(6.0–16.0)	13.3	(6.5–25.0)	12.6	(9.5–16.5)	13.0	(9.1–18.3)	4.4	(3.0–6.4)
New Hampshire	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
New Mexico	11.9	(8.7–15.9)	11.1	(9.3–13.1)	11.5	(9.0–14.4)	10.8	(8.6–13.4)	16.1	(11.8–21.6)	10.2	(6.4–15.7)	15.7	(11.9–20.5)	20.5	(15.7–26.3)	5.1	(4.1–6.5)
New York	14.9	(12.9–17.0)	15.9	(14.2–17.7)	15.3	(14.0–16.7)	14.7	(13.3–16.3)	18.8	(14.0–24.9)	14.1	(10.6–18.4)	22.8	(20.4–25.4)	24.0	(19.6–29.1)	8.2	(6.7–10.1)
North Carolina	11.2	(8.8–14.0)	10.5	(8.2–13.4)	10.8	(9.0–13.0)	8.7	(7.4–10.1)	20.9	(15.5–27.7)	23.5	(15.1–34.7)	13.3	(10.8–16.2)	22.0	(15.4–30.6)	4.3	(3.3–5.6)
North Dakota	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Oklahoma	14.7	(10.4–20.2)	9.7	(7.4–12.5)	12.2	(9.4–15.7)	10.4	(8.4–12.9)	21.6	(11.8–36.0)	30.4	(15.6–50.7)	15.7	(11.7–20.7)	29.7	(16.7–47.0)	5.1	(3.8–6.9)
Pennsylvania	13.4	(10.5–16.9)	13.7	(11.0–17.0)	13.5	(11.1–16.4)	12.6	(10.4–15.3)	22.1	(16.2–29.2)	10.7	(5.7–19.2)	16.3	(13.6–19.4)	29.2	(21.7–38.0)	6.6	(4.9–8.7)
Rhode Island	12.5	(8.1–18.7)	14.1	(11.3–17.5)	13.5	(10.5–17.1)	12.5	(9.5–16.4)	20.0	(11.6–32.3)	13.0	(4.2–34.0)	16.4	(13.0–20.5)	27.9	(20.7–36.4)	6.2	(4.7–8.2)
South Carolina	12.6	(9.7–16.2)	11.4	(8.7–14.7)	12.1	(10.1–14.5)	11.9	(9.4–14.8)	12.8	(7.0–22.2)	17.5	(7.4–36.1)	14.3	(11.3–18.0)	20.1	(13.8–28.3)	4.6	(2.7–7.9)
Tennessee	12.9	(10.2–16.1)	11.0	(8.5–14.0)	12.0	(10.1–14.3)	—	—	—	—	—	—	—	—	—	—	—	—
Texas	14.1	(10.9–18.1)	12.8	(10.4–15.8)	13.5	(11.0–16.4)	12.5	(10.2–15.3)	19.2	(11.7–29.9)	18.2	(10.3–30.0)	15.5	(12.9–18.6)	27.5	(19.0–38.1)	7.7	(5.5–10.8)
Utah	7.8	(5.4–11.2)	8.5	(5.8–12.3)	8.2	(6.1–11.1)	—	—	—	—	—	—	—	—	—	—	—	—
Vermont	11.9	(11.3–12.6)	9.0	(8.4–9.5)	10.4	(10.0–10.9)	10.0	(9.6–10.5)	14.7	(13.2–16.3)	8.8	(7.0–10.8)	14.3	(13.6–15.1)	24.7	(22.4–27.2)	3.4	(3.0–3.8)
Virginia	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
West Virginia	10.9	(8.7–13.6)	13.0	(9.8–16.9)	12.3	(10.0–15.1)	11.6	(9.1–14.5)	22.3	(14.8–32.3)	2.3	(0.5–10.6)	13.0	(10.7–15.8)	21.1	(15.0–28.8)	6.0	(4.1–8.9)
Wisconsin	10.8	(8.5–13.7)	11.2	(7.8–15.9)	11.2	(8.8–14.2)	10.4	(8.2–13.1)	20.3	(14.4–27.8)	6.5	(2.9–13.7)	12.8	(10.1–16.1)	20.4	(13.6–29.5)	6.5	(4.0–10.3)
Median	12.0		11.4		12.0		11.4		19.0		13.7		15.5		23.2		5.3
Range	7.8–26.1		8.5–22.7		8.2–23.8		7.6–21.1		9.9–40.6		2.3–30.4		9.2–23.2		13.0–54.3		3.4–8.2
Large urban school district surveys
Baltimore, MD	27.4	(21.3–34.5)	28.0	(20.8–36.4)	27.9	(23.0–33.3)	28.0	(22.4–34.3)	28.3	(17.5–42.3)	28.2	(14.4–47.8)	34.6	(27.2–42.8)	35.4	(22.8–50.3)	13.3	(9.4–18.6)
Boston, MA	16.0	(13.0–19.5)	16.6	(13.5–20.2)	16.4	(13.9–19.2)	16.5	(13.9–19.5)	16.8	(10.9–24.9)	12.0	(6.0–22.5)	22.2	(19.0–25.7)	26.3	(18.1–36.5)	7.1	(5.2–9.7)
Broward County, FL	19.3	(14.6–25.0)	19.5	(14.7–25.5)	19.5	(15.3–24.6)	18.5	(14.6–23.2)	27.6	(15.8–43.8)	14.8	(6.1–31.4)	21.4	(15.1–29.5)	16.7	(8.1–31.6)	13.4	(9.3–18.9)
Chicago, IL	20.1	(16.9–23.6)	18.1	(14.3–22.7)	19.0	(16.5–21.9)	18.8	(16.3–21.7)	22.7	(17.5–28.9)	14.6	(7.5–26.6)	25.0	(21.1–29.3)	26.0	(17.3–37.2)	10.7	(8.0–14.2)
Cleveland, OH	23.5	(19.9–27.6)	21.4	(17.2–26.3)	22.6	(19.5–25.9)	22.6	(19.3–26.4)	24.8	(16.9–34.8)	14.2	(6.4–28.6)	27.5	(22.6–33.0)	33.7	(24.9–43.8)	10.0	(7.4–13.5)
DeKalb County, GA	14.8	(12.2–17.9)	20.0	(16.9–23.4)	17.3	(15.3–19.5)	16.0	(13.8–18.5)	25.2	(19.2–32.2)	18.1	(10.7–29.1)	22.9	(19.4–27.0)	24.1	(17.3–32.6)	7.8	(6.1–9.8)
Detroit, MI	20.2	(16.4–24.7)	26.9	(22.3–32.1)	23.5	(20.3–27.1)	22.8	(19.3–26.6)	30.8	(22.9–39.9)	13.4	(6.2–26.4)	27.3	(22.8–32.3)	29.1	(20.1–40.2)	17.2	(13.3–21.9)
District of Columbia	30.0	(28.5–31.6)	29.7	(27.9–31.4)	29.9	(28.7–31.0)	29.6	(28.3–30.9)	33.9	(30.8–37.1)	22.9	(18.2–28.3)	37.7	(35.8–39.7)	40.9	(37.2–44.7)	15.9	(14.5–17.4)
Duval County, FL	16.4	(14.5–18.4)	18.9	(16.4–21.7)	17.7	(15.9–19.5)	16.5	(14.5–18.6)	24.0	(20.1–28.4)	14.6	(9.3–22.3)	19.2	(16.7–21.9)	28.4	(24.2–33.1)	7.3	(5.9–9.2)
Ft. Worth, TX	12.3	(10.4–14.4)	12.4	(10.6–14.3)	12.4	(11.1–13.8)	11.7	(10.5–13.1)	18.7	(14.2–24.1)	13.3	(7.9–21.4)	17.3	(15.0–20.0)	18.0	(12.6–25.0)	5.6	(4.3–7.1)
Houston, TX	15.7	(13.8–17.7)	18.5	(16.1–21.1)	17.1	(15.5–18.9)	16.3	(14.6–18.1)	21.8	(17.5–26.9)	20.7	(14.5–28.5)	21.9	(19.1–25.1)	22.1	(16.7–28.6)	9.8	(8.2–11.6)
Los Angeles, CA	10.7	(7.6–14.8)	10.1	(7.0–14.3)	10.4	(7.9–13.6)	10.2	(7.6–13.5)	15.7	(8.6–26.9)	8.3	(2.6–23.0)	15.9	(11.8–20.9)	25.5	(15.5–39.0)	4.7	(2.6–8.4)
Miami-Dade County, FL	18.5	(16.0–21.3)	18.4	(15.8–21.4)	18.6	(16.6–20.8)	17.7	(15.4–20.2)	22.8	(18.3–28.1)	22.5	(13.9–34.4)	21.1	(18.6–23.9)	32.6	(25.9–40.1)	9.5	(7.7–11.7)
New York City, NY	16.9	(14.5–19.6)	18.9	(16.4–21.8)	18.0	(15.7–20.5)	17.7	(15.2–20.5)	21.9	(19.0–25.1)	15.5	(12.5–19.0)	29.8	(25.8–34.1)	27.2	(23.0–31.8)	9.8	(8.4–11.4)
Oakland, CA	26.8	(22.3–31.8)	21.5	(18.7–24.5)	24.2	(21.6–27.1)	23.2	(20.6–25.9)	34.9	(26.7–44.1)	19.2	(10.6–32.3)	36.1	(31.8–40.6)	42.3	(32.8–52.5)	12.4	(9.9–15.4)
Orange County, FL	10.2	(8.1–12.8)	12.7	(10.1–15.9)	11.4	(9.6–13.5)	10.3	(8.4–12.5)	20.1	(13.8–28.3)	9.9	(4.3–21.1)	13.9	(11.3–17.1)	15.3	(9.5–23.7)	6.7	(4.7–9.6)
Palm Beach County, FL	14.2	(12.1–16.5)	14.6	(11.9–17.8)	14.5	(12.7–16.5)	13.8	(11.9–16.0)	18.1	(13.4–24.0)	17.1	(10.0–27.7)	17.2	(14.1–20.8)	20.5	(14.3–28.5)	8.6	(6.7–10.8)
Philadelphia, PA	36.0	(29.7–42.9)	38.6	(32.4–45.1)	37.2	(31.3–43.5)	35.7	(29.7–42.2)	53.3	(45.1–61.3)	20.6	(12.9–31.1)	45.8	(38.7–53.2)	59.6	(46.4–71.5)	22.9	(17.4–29.6)
San Diego, CA	10.4	(8.8–12.3)	9.8	(8.2–11.7)	10.2	(8.9–11.7)	9.4	(8.1–10.9)	17.2	(13.0–22.4)	11.6	(6.2–20.6)	13.7	(11.7–16.1)	22.0	(15.9–29.5)	4.2	(3.0–5.8)
San Francisco, CA	9.2	(7.3–11.4)	13.1	(11.0–15.6)	11.3	(9.8–13.2)	10.6	(9.0–12.3)	15.2	(10.6–21.2)	11.3	(7.1–17.6)	20.3	(17.0–24.2)	25.1	(17.8–34.2)	4.8	(3.5–6.5)
Shelby County, TN	18.0	(15.1–21.3)	18.9	(15.9–22.2)	18.3	(16.5–20.3)	16.6	(15.0–18.3)	25.4	(18.8–33.4)	26.3	(17.1–38.2)	21.8	(19.1–24.8)	30.6	(21.3–41.7)	8.6	(6.6–11.1)
Median	16.9		18.9		18.0		16.6		22.8		14.8		21.9		26.3		9.5
Range	9.2–36.0		9.8–38.6		10.2–37.2		9.4–35.7		15.2–53.3		8.3–28.2		13.7–45.8		15.3–59.6		4.2–22.9

* Not counting tests done if they donated blood.
^† 95% confidence interval.
^§ Not available.

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Page last reviewed: June 14, 2018
Page last updated: June 14, 2018
Content source:
- Division of Adolescent and School Health, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention

Adolescent and School Health

Youth Risk Behavior Surveillance — United States, 2017

TABLE 133. Percentage of high school students who ever had sexual intercourse, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts* — United States, Youth Risk Behavior Survey, 2017

**TABLE 134. Percentage of high school students who ever had sexual intercourse, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017**

TABLE 135. Percentage of high school students who had sexual intercourse for the first time before age 13 years, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts* — United States, Youth Risk Behavior Survey, 2017

TABLE 136. Percentage of high school students who had sexual intercourse for the first time before age 13 years, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 137. Percentage of high school students who had sexual intercourse with four or more persons during their life, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts* — United States, Youth Risk Behavior Survey, 2017

TABLE 138. Percentage of high school students who had sexual intercourse with four or more persons during their life, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 139. Percentage of high school students who were currently sexually active,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

**TABLE 140. Percentage of high school students who were currently sexually active,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017**

TABLE 141. Percentage of high school students who used a condom during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 142. Percentage of high school students who used a condom during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 143. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 144. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 145. Percentage of high school students who used an IUD* or implant^† before last sexual intercourse,^§ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^¶ — United States, Youth Risk Behavior Survey, 2017

TABLE 146. Percentage of high school students who used an IUD* or implant^† before last sexual intercourse,^§ by sex, sexual identity, and sex of sexual contacts^¶ — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 147. Percentage of high school students who used a shot,* patch,^† or birth control ring^§ before last sexual intercourse,^¶ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts** — United States, Youth Risk Behavior Survey, 2017

TABLE 148. Percentage of high school students who used a shot,* patch,^† or birth control ring^§ before last sexual intercourse,^¶ by sex, sexual identity, and sex of sexual contacts** — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 153. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 154. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 155. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 156. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 157. Percentage of high school students who were ever tested for human immunodeficiency virus (HIV),* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts — United States, Youth Risk Behavior Survey, 2017

TABLE 158. Percentage of high school students who were ever tested for human immunodeficiency virus (HIV),* by sex, sexual identity, and sex of sexual contacts — selected U.S. sites, Youth Risk Behavior Surveys, 2017

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Youth Risk Behavior Surveillance — United States, 2017

TABLE 133. Percentage of high school students who ever had sexual intercourse, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts* — United States, Youth Risk Behavior Survey, 2017

TABLE 134. Percentage of high school students who ever had sexual intercourse, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 135. Percentage of high school students who had sexual intercourse for the first time before age 13 years, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts* — United States, Youth Risk Behavior Survey, 2017

TABLE 136. Percentage of high school students who had sexual intercourse for the first time before age 13 years, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 137. Percentage of high school students who had sexual intercourse with four or more persons during their life, by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts* — United States, Youth Risk Behavior Survey, 2017

TABLE 138. Percentage of high school students who had sexual intercourse with four or more persons during their life, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 139. Percentage of high school students who were currently sexually active,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts† — United States, Youth Risk Behavior Survey, 2017

TABLE 140. Percentage of high school students who were currently sexually active,* by sex, sexual identity, and sex of sexual contacts† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 141. Percentage of high school students who used a condom during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts† — United States, Youth Risk Behavior Survey, 2017

TABLE 142. Percentage of high school students who used a condom during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 143. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts† — United States, Youth Risk Behavior Survey, 2017

TABLE 144. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 145. Percentage of high school students who used an IUD* or implant† before last sexual intercourse,§ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts¶ — United States, Youth Risk Behavior Survey, 2017

TABLE 146. Percentage of high school students who used an IUD* or implant† before last sexual intercourse,§ by sex, sexual identity, and sex of sexual contacts¶ — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 147. Percentage of high school students who used a shot,* patch,† or birth control ring§ before last sexual intercourse,¶ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts** — United States, Youth Risk Behavior Survey, 2017

TABLE 148. Percentage of high school students who used a shot,* patch,† or birth control ring§ before last sexual intercourse,¶ by sex, sexual identity, and sex of sexual contacts** — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 150. Percentage of high school students who used birth control pills; an IUD* or implant;† or a shot,§ patch,¶ or birth control ring** before last sexual intercourse,†† by sex, sexual identity, and sex of sexual contacts§§ — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 153. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts† — United States, Youth Risk Behavior Survey, 2017

TABLE 154. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 155. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts† — United States, Youth Risk Behavior Survey, 2017

TABLE 156. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 157. Percentage of high school students who were ever tested for human immunodeficiency virus (HIV),* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts — United States, Youth Risk Behavior Survey, 2017

TABLE 158. Percentage of high school students who were ever tested for human immunodeficiency virus (HIV),* by sex, sexual identity, and sex of sexual contacts — selected U.S. sites, Youth Risk Behavior Surveys, 2017

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**TABLE 134. Percentage of high school students who ever had sexual intercourse, by sex, sexual identity, and sex of sexual contacts* — selected U.S. sites, Youth Risk Behavior Surveys, 2017**

TABLE 139. Percentage of high school students who were currently sexually active,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

**TABLE 140. Percentage of high school students who were currently sexually active,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017**

TABLE 141. Percentage of high school students who used a condom during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 142. Percentage of high school students who used a condom during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 143. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 144. Percentage of high school students who used birth control pills before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 145. Percentage of high school students who used an IUD* or implant^† before last sexual intercourse,^§ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^¶ — United States, Youth Risk Behavior Survey, 2017

TABLE 146. Percentage of high school students who used an IUD* or implant^† before last sexual intercourse,^§ by sex, sexual identity, and sex of sexual contacts^¶ — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 147. Percentage of high school students who used a shot,* patch,^† or birth control ring^§ before last sexual intercourse,^¶ by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts** — United States, Youth Risk Behavior Survey, 2017

TABLE 148. Percentage of high school students who used a shot,* patch,^† or birth control ring^§ before last sexual intercourse,^¶ by sex, sexual identity, and sex of sexual contacts** — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 153. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 154. Percentage of high school students who did not use any method to prevent pregnancy during last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017

TABLE 155. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, race/ethnicity, grade, sexual identity, and sex of sexual contacts^† — United States, Youth Risk Behavior Survey, 2017

TABLE 156. Percentage of high school students who drank alcohol or used drugs before last sexual intercourse,* by sex, sexual identity, and sex of sexual contacts^† — selected U.S. sites, Youth Risk Behavior Surveys, 2017