Provisional Exclusive Breastfeeding Rates by Socio-demographic Factors, Among Children Born in 2006 (Percent +/- half 95% Confidence Interval)
Socio-demographic
Factors		 Number Exclusive Breastfeeding1
through 3 Months		 Exclusive Breastfeeding1
through 6 Months
US National 16679 33.1±1.2 13.6±0.9
Sex
Male 8631 33.3±1.7 13.6±1.3
Female 8048 32.9±1.7 13.7±1.3
Race/ethnicity
American Indian or Alaska 549 26.9±7.4 10.8±6.7
Asian or Pacific Islander 1078 40.6±5.6 21.3±5.5
 Asian 888 42.3±6.3 22.3±6.2
 Native Hawaiian and other 245 30.4±9.0 14.6±7.3
Black or African American 2605 20.0±2.4 6.2±1.4
White 13382 35.4±1.4 14.6±1.0
Hispanic or Latino 3188 35.7±3.0 14.9±2.3
Not Hispanic or Latino (NH) 13491 32.1±1.3 13.2±0.9
 NH Black or African American 2277 18.8±2.4 5.6±1.3
 NH White 10666 35.0±1.5 14.6±1.0
Birth Order
First Born 8641 35.2±1.8 14.1±1.3
Not First Born 8038 30.7±1.7 13.1±1.3
Receiving WIC2
Yes 7039 24.9±1.8 9.5±1.3
No, but eligible 841 38.6±5.2 18.0±4.0
Ineligible 8041 42.5±1.8 17.9±1.4
Maternal Age, Years
<20 353 18.7±7.4 7.8±5.4
20-29 5700 28.1±2.1 10.9±1.5
>=30 10626 37.1±1.6 15.7±1.2
Maternal Education
Not a High School Graduate 1869 26.5±3.4 10.9±2.6
High School Graduate 3231 26.9±2.5 10.5±1.7
Some College 4476 31.6±2.2 11.3±1.4
College Graduate 7103 45.0±1.8 20.3±1.5
Maternal Marital Status
Married 12568 38.6±1.5 16.0±1.1
Unmarried3 4111 20.7±2.2 8.2±1.6
Residence
MSA4, Central City 7184 34.4±2.0 13.9±1.4
MSA, Non-Central City 6035 33.4±2.0 13.9±1.4
Non-MSA 3460 28.9±2.5 12.1±1.9
Poverty Income Ratio5, %
<100% 3078 24.9±2.7 10.6±2.1
100%-184% 2600 30.4±3.0 11.7±2.1
185%-349% 3790 36.8±2.6 14.3±1.9
≥350% 5743 40.6±2.1 17.5±1.6

1Exclusive breastfeeding is defined as ONLY breast milk — NO solids, no water, and no other liquids
2WIC = Special Supplemental Nutrition Program for Women, Infants, and Children.
3Unmarried includes never married, widowed, separated, divorced.
4MSA = Metropolitan Statistical Area defined by the Census Bureau.
5Poverty Income Ratio = Ratio of self-reported family income to the federal poverty threshold value depending on the number of people in the household.
Source: National Immunization Survey, Centers for Disease Control and Prevention, Department of Health and Human Services
Sample sizes appearing in the NIS breastfeeding tables are slightly smaller than the numbers published in other NIS publications due to the fact that in the DNPAO breastfeeding analyses, the sample was limited to records with valid responses to the breastfeeding questions.