Final Geographic-specific Formula Supplementation Rates among Children born in 2006 (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 18987 24.2±1.1 15052 36.7±1.4 11655 43.6±1.6
ALABAMA 294 24.2±5.9 212 30.8±7.2 150 43.6±9.1
ALASKA 262 17.4±5.4 204 27.4±6.8 159 32.4±8.1
ARIZONA 332 31.9±6.3 276 42.0±7.1 208 45.0±8.2
ARKANSAS 306 19.4±5.7 225 40.7±8.6 163 44.7±9.6
CALIFORNIA 1026 25.9±4.3 858 35.6±5.1 686 42.1±5.7
  CA-Los Angeles County 347 35.3±5.7 279 47.0±6.5 213 53.7±7.5
  CA-Santa Clara County 175 21.8±7.0 157 32.7±8.4 124 47.3±10.2
  CA-Northern CA  168 15.4±6.5 140 25.1±8.7 119 27.8±9.0
COLORADO 377 19.9±5.8 321 27.1±6.9 273 32.9±8.4
CONNECTICUT 258 20.8±6.3 205 33.3±7.5 156 42.0±9.0
DELAWARE 289 20.1±6.1 214 32.3±7.7 170 47.5±9.0
DISTRICT OF COLUMBIA 338 26.3±5.8 302 41.8±6.9 244 52.0±7.6
FLORIDA 707 30.0±6.2 554 43.1±7.8 387 48.1±9.1
 FL-Miami-Dade County 221 39.1±8.1 170 49.5±9.3 112 56.3±11.1
 FL-Orange County 197 35.4±8.9 163 46.6±10.3 114 51.7±12.8
GEORGIA 281 22.5±6.6 235 37.6±8.3 176 40.8±9.3
HAWAII 306 24.7±5.5 248 32.4±6.6 211 41.2±7.7
IDAHO 263 13.2±4.3 231 22.8±5.9 186 33.7±7.7
ILLINOIS 885 26.8±4.5 701 37.3±5.3 527 45.0±6.5
  IL-City of Chicago 356 41.3±6.9 293 46.6±7.3 214 52.8±8.3
  IL-Madison/St. Clair Counties 177 18.2±6.7 133 32.7±9.2 101 41.1±10.9
INDIANA 490 18.2±5.3 353 35.1±7.5 270 37.4±8.6
  IN-Marion County 100 20.9±10.1 74 40.6±13.3 56 42.7±15.3
IOWA 259 16.4±5.5 191 27.3±7.4 146 35.3±8.8
KANSAS 284 19.8±7.0 225 29.8±8.4 168 34.7±9.4
KENTUCKY 241 20.8±6.2 175 26.6±7.4 134 33.2±8.9
LOUISIANA 278 23.6±6.1 191 34.2±7.9 132 41.7±10.0
MAINE 294 17.3±4.7 236 28.9±6.5 188 35.9±7.7
MARYLAND 582 25.5±5.9 469 44.2±7.0 373 54.1±8.1
  MD-Baltimore City 256 26.3±6.9 209 35.8±7.8 174 48.1±8.9
MASSACHUSETTS 295 18.4±5.1 240 34.0±7.0 178 46.1±8.8
MICHIGAN 302 28.9±6.4 231 36.6±7.4 169 43.1±8.9
MINNESOTA 377 16.9±4.3 311 29.9±6.0 254 42.0±7.0
 MN-Twin Cities 183 25.3±7.8 149 34.4±9.0 121 43.7±10.4
MISSISSIPPI 271 27.6±7.0 181 42.0±9.4 124 51.2±11.3
MISSOURI 324 17.4±5.2 220 31.1±7.1 167 36.8±8.8
MONTANA 292 18.6±5.7 245 33.2±7.2 217 42.3±7.7
NEBRASKA 284 17.9±5.4 226 35.4±7.1 185 43.4±8.1
NEVADA 297 32.0±6.1 242 43.4±7.1 178 52.1±8.3
NEW HAMPSHIRE 255 20.1±5.7 207 31.5±7.3 175 40.3±8.1
NEW JERSEY 390 35.0±6.3 319 47.6±6.7 255 54.7±7.5
NEW MEXICO 330 25.1±6.2 272 37.4±7.5 207 37.8±8.0
NEW YORK 570 34.8±4.6 457 51.2±5.3 352 60.0±5.9
  NY-NYC 5 Counties 317 43.3±6.2 262 58.8±6.7 201 66.9±7.1
NORTH CAROLINA 268 22.2±6.3 213 32.2±7.7 154 39.3±9.5
NORTH DAKOTA 239 14.3±4.8 187 22.1±6.3 136 31.0±8.1
OHIO 243 19.7±6.1 176 38.9±8.3 142 43.4±9.4
OKLAHOMA 254 16.2±5.2 183 30.2±7.6 124 44.3±10.0
OREGON 292 13.9±5.2 253 25.6±6.6 213 35.4±7.9
PENNSYLVANIA 535 17.4±4.3 402 33.7±6.5 291 47.3±8.0
  PA-Philadelphia 282 30.1±6.3 207 40.8±7.5 150 43.7±8.9
RHODE ISLAND 246 21.7±6.7 191 40.6±9.2 137 52.1±10.7
SOUTH CAROLINA 286 27.7±6.8 208 36.1±7.9 139 40.2±9.9
SOUTH DAKOTA 282 20.7±5.9 213 29.5±7.4 172 34.4±8.3
TENNESSEE 305 17.1±5.7 236 28.7±7.6 185 36.8±8.9
TEXAS 1461 25.9±4.2 1173 41.3±5.4 883 45.8±6.2
  TX-Bexar County 281 31.9±6.8 233 44.4±7.9 190 49.4±8.6
  TX-City of Houston 309 35.0±6.5 258 50.4±7.6 196 54.5±8.6
  TX-Dallas County 294 28.3±6.5 228 33.5±7.7 171 34.9±8.9
  TX-El Paso County 287 32.9±6.2 217 39.9±7.2 147 48.8±8.9
UTAH 306 21.7±5.8 265 32.1±6.9 227 40.6±8.1
VERMONT 294 13.1±4.5 264 25.6±5.9 220 31.7±7.0
VIRGINIA 290 17.7±5.7 229 30.4±7.6 183 41.9±9.4
WASHINGTON 544 21.5±4.6 463 26.2±5.0 393 32.0±5.8
  WA-Eastern/Western WA 301 21.0±5.2 253 27.9±6.1 204 30.8±6.9
WEST VIRGINIA 239 22.5±6.5 155 29.8±8.8 123 35.7±9.3
WISCONSIN 262 10.7±4.4 217 23.4±6.4 170 32.2±8.1
WYOMING 302 15.2±4.5 247 23.4±5.8 195 31.6±7.1

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-San Bernardino County; CA-San Diego County; CO-Denver; FL-Duval County; GA-Fulton/DeKalb Counties; IN-Lake County; KS-Eastern KS; LA-Orleans Parish; MA-City of Boston; MI-City of Detroit; 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.