Provisional Geographic-specific Formula Supplementation Rates among Children born in 2007 (Percent +/- half 95% Confidence Interval)
State & Breakdown n Formula Supplementation1 before 2 days of age n Formula Supplementation1 before 3 months of age n Formula Supplementation1 before 6 months
of age
US National 12900 25.4±1.4 10137 37.2±1.8 7899 43.8±2.0
ALABAMA 178 29.2±8.7 125 41.7±10.5 94 50.1±12.0
ALASKA 170 14.8±6.1 146 29.5±8.5 127 35.6±9.3
ARIZONA 247 25.8±7.2 205 40.9±8.7 158 46.0±9.9
ARKANSAS 202 18.1±6.1 132 32.9±10.2 97 37.5±11.5
CALIFORNIA 427 25.8±5.7 363 39.4±6.9 265 40.8±8.1
  CA-Los Angeles County 209 30.5±7.3 175 36.5±8.3 124 42.2±10.0
COLORADO 305 16.5±6.5 256 30.8±9.2 214 43.3±11.0
CONNECTICUT 180 18.4±6.8 149 27.2±8.8 124 33.6±10.4
DELAWARE 204 23.7±6.4 166 38.6±8.3 132 45.1±9.4
DISTRICT OF COLUMBIA 286 33.9±7.8 257 43.5±8.1 200 51.2±9.0
FLORIDA 301 28.0±6.7 230 36.2±8.1 171 43.6±9.3
GEORGIA 208 28.2±7.7 159 39.6±10.1 125 52.9±10.7
HAWAII 205 26.3±7.2 175 38.3±8.3 143 46.6±9.5
IDAHO 167 17.6±6.6 127 36.0±9.5 104 43.0±10.4
ILLINOIS 484 28.1±6.1 384 41.7±7.2 278 46.1±8.1
  IL-City of Chicago 250 35.4±8.5 209 47.0±8.5 148 55.6±9.4
INDIANA 504 20.4±5.3 372 30.3±7.2 275 37.2±9.5
  IN-Lake County 169 41.8±9.3 124 52.6±10.6 89 56.8±12.4
  IN-Marion County 165 25.3±8.5 134 36.5±9.5 99 38.4±10.1
IOWA 209 11.5±4.8 153 27.6±8.4 128 35.5±9.3
KANSAS 171 10.9±5.2 130 26.0±9.3 107 41.4±11.5
KENTUCKY 195 18.6±5.9 138 29.4±8.3 103 36.5±10.3
LOUISIANA 190 21.4±7.6 117 24.7±9.4 81 28.7±12.5
MAINE 186 9.4±4.6 144 14.4±6.4 129 26.1±8.4
MARYLAND 336 28.2±8.9 274 40.5±10.0 220 48.9±11.1
  MD-Baltimore City 180 18.6±6.8 150 42.3±9.7 119 48.5±10.7
MASSACHUSETTS 207 20.3±6.7 175 35.4±8.6 135 38.7±9.8
MICHIGAN 224 27.8±7.9 172 39.3±9.4 132 48.3±11.2
MINNESOTA 184 9.8±5.0 146 15.9±6.9 123 28.3±9.1
MISSISSIPPI 215 37.9±8.8 131 44.2±11.0 99 50.1±11.9
MISSOURI 225 20.9±7.0 166 34.7±8.7 134 43.3±10.1
MONTANA 209 9.1±4.7 173 21.5±7.4 142 33.9±9.8
NEBRASKA 173 17.3±6.6 144 29.6±8.5 113 40.2±10.3
NEVADA 234 28.6±7.4 184 39.0±8.8 135 46.5±10.4
NEW HAMPSHIRE 184 11.9±4.8 148 21.3±6.8 124 32.4±8.7
NEW JERSEY 271 35.0±7.2 218 42.5±7.9 163 50.7±9.2
NEW MEXICO 251 18.9±5.5 202 22.6±6.3 162 34.7±9.0
NEW YORK 406 33.2±5.3 329 44.7±6.2 249 50.1±7.2
  NY-NYC 5 Counties 222 37.9±7.4 186 50.8±8.3 148 55.1±9.4
NORTH CAROLINA 186 30.5±9.5 141 42.3±10.6 103 51.2±12.1
NORTH DAKOTA 131 9.4±5.1 101 15.7±7.1 75 26.7±10.3
OHIO 192 19.5±8.3 149 24.9±8.5 112 34.3±10.1
OKLAHOMA 198 21.8±7.1 138 37.6±10.0 95 39.3±11.7
OREGON 251 15.2±5.3 220 24.8±6.8 186 35.0±8.1
PENNSYLVANIA 363 19.2±5.2 279 28.0±6.9 198 49.4±9.5
  PA-Philadelphia 185 30.9±7.4 135 36.1±8.9 95 51.1±10.9
RHODE ISLAND 204 33.8±9.1 164 42.0±10.2 132 49.3±11.1
SOUTH CAROLINA 166 22.8±7.5 115 39.9±10.3 79 44.8±12.6
SOUTH DAKOTA 186 14.6±5.4 153 26.0±7.9 119 35.8±9.6
TENNESSEE 248 27.2±7.3 185 39.6±9.0 126 43.7±11.1
TEXAS 1001 34.6±5.7 770 46.5±6.6 584 50.8±7.6
  TX-Bexar County 201 25.9±7.4 160 45.0±9.7 119 46.9±11.4
  TX-City of Houston 198 41.4±8.2 155 55.1±9.2 124 64.5±9.7
  TX-Dallas County 177 30.0±8.8 146 40.0±10.0 109 44.1±11.9
  TX-El Paso County 225 20.6±6.0 155 29.5±7.8 115 42.8±9.9
UTAH 230 27.5±7.3 188 35.7±8.6 163 46.2±9.8
VERMONT 249 13.6±5.0 202 25.4±6.9 180 31.7±7.4
VIRGINIA 222 29.2±9.6 180 42.7±11.4 142 47.7±12.0
WASHINGTON 372 20.0±5.6 315 33.0±6.8 267 41.6±7.6
  WA-Eastern/Western WA 214 21.0±6.5 185 34.7±7.9 153 37.1±8.4
WEST VIRGINIA 142 21.1±8.2 102 37.1±10.4 73 41.4±12.5
WISCONSIN 232 11.9±5.7 184 31.8±8.7 150 38.3±9.9
WYOMING 189 13.5±5.3 161 19.4±6.6 129 22.4±7.6

1Formula supplementation is defined as supplementation of breast milk with formula (with or without other supplementary liquids or solids) among infants breastfed at the age specified (2 days, 3 months, or 6 months). The denominator for the 2 day, 3 month, or 6 month rate is the number of infants breastfeeding at 2 days, 3 months, or 6 months, respectively.

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.

Counties and cities not sampled or with sample size <100 on the 2 days' analysis (AL-Jefferson County; AZ-Maricopa County; CA-Alameda County; CA-Fresno County; CA-Northern CA ; CA-San Bernardino County; CA-San Diego County; CA-Santa Clara County; CO-Denver; FL-Duval County; FL-Miami-Dade County; FL-Orange County; GA-Fulton/DeKalb Counties; IL-Madison/St. Clair Counties; KS-Eastern KS; LA-Orleans Parish; MA-City of Boston; MI-City of Detroit; MN-Twin Cities; MO-St. Louis County/City; NJ-City of Newark; NM-Southern NM; NV-Clark County; OH-Cuyahoga County; OH-Franklin County; PA-Allegheny County; TN-Davidson County; TN-Shelby County; WA-King County; and WI-Milwaukee County) are not reported on in this table.