Provisional Geographic-specific Formula Supplementation Rates among Children born in 2005 (Percent +/- half 95% Confidence Interval)

State & Breakdown

Number Formula Supplementation1
before 2 days of age
Number Formula Supplementation1
before 3 months of age
US Nation 11654 24.7±1.4 9139 38.3±1.8
ALABAMA 139 23.9±8.1 96 42.0±11.5
ALASKA 149 14.0±6.6 122 27.9±9.2
ARIZONA 231 33.6±8.0 188 44.2±9.0
ARKANSAS 180 30.1±8.6 136 40.1±10.4
CALIFORNIA 902 26.0±5.0 782 38.6±6.3
 CA-Alameda County 231 16.8±5.5 210 36.8±7.8
 CA-Los Angeles County 206 37.4±7.7 181 46.5±8.4
 CA-San Bernardino County 188 21.4±6.4 151 33.1±8.3
COLORADO 167 19.5±8.3 145 26.1±8.6
CONNECTICUT 169 21.5±7.5 140 34.0±9.3
DELAWARE 174 26.1±7.7 134 44.7±10.1
DISTRICT OF COLUMBIA 207 29.9±7.2 174 44.5±8.5
FLORIDA 391 30.6±7.7 293 41.9±9.9
 FL-Miami-Dade County 206 35.4±7.8 155 51.8±9.6
GEORGIA 223 26.6±8.2 171 46.2±10.6
HAWAII 187 31.2±8.9 152 41.5±9.2
IDAHO 136 14.4±6.5 121 26.5±8.3
ILLINOIS 407 19.5±4.7 326 32.0±6.7
 IL-City of Chicago 195 32.2±8.5 156 46.1±10.4
INDIANA 392 18.8±6.2 289 29.8±8.4
 IN-Marion County 189 25.9±7.4 141 41.8±9.5
IOWA 146 14.1±5.8 107 26.9±9.0
KANSAS 169 19.5±7.9 124 32.0±10.7
KENTUCKY 147 13.8±6.9 105 21.6±9.1
LOUISIANA 180 17.9±7.3 126 30.2±10.5
MAINE 148 14.0±7.0 114 20.3±8.4
MARYLAND 257 26.9±6.6 215 43.2±8.1
MASSACHUSETTS 163 25.0±8.8 129 36.2±10.5
MICHIGAN 179 19.3±6.6 135 30.5±9.0
MINNESOTA 168 12.3±6.3 137 26.3±8.6
MISSISSIPPI 114 16.6±8.1 85 41.9±13.0
MISSOURI 163 13.1±5.8 111 26.1±10.9
MONTANA 184 12.8±6.1 153 26.1±8.3
NEBRASKA 139 16.3±7.7 115 41.5±11.0
NEVADA 189 31.6±8.0 151 44.4±9.2
NEW HAMPSHIRE 141 19.2±7.2 115 32.7±9.4
NEW JERSEY 196 32.4±8.8 153 52.8±9.8
NEW MEXICO 179 20.5±6.9 138 31.4±9.5
NEW YORK 388 37.6±5.6 315 50.8±6.4
 NY-NYC 5 Counties 254 47.2±6.9 209 59.0±7.6
NORTH CAROLINA 167 20.1±7.5 122 40.1±10.2
NORTH DAKOTA 150 8.0±4.0 115 21.3±9.9
OHIO 202 19.5±6.3 139 40.5±9.2
OKLAHOMA 165 23.9±9.7 113 31.5±9.3
OREGON 176 18.2±6.8 152 22.0±7.4
PENNSYLVANIA 346 19.0±5.6 258 37.4±7.7
 PA-Philadelphia 113 32.7±10.9 84 47.0±12.5
RHODE ISLAND 148 30.1±9.7 123 38.1±10.9
SOUTH CAROLINA 234 23.3±6.5 174 36.4±8.2
SOUTH DAKOTA 171 14.1±7.0 129 30.3±10.5
TENNESSEE 157 26.0±9.2 110 35.2±11.1
TEXAS 977 32.3±5.4 745 45.2±6.1
 TX-Bexar County 195 26.4±8.0 145 42.4±10.6
 TX-City of Houston 241 45.7±7.2 186 55.0±7.9
 TX-Dallas County 179 32.3±8.7 147 47.5±9.7
 TX-El Paso County 147 29.2±8.5 98 39.9±11.1
UTAH 230 18.7±5.8 200 35.2±7.6
VERMONT 152 9.9±5.3 133 20.3±7.5
VIRGINIA 236 17.1±5.6 186 35.3±7.9
WASHINGTON 379 18.8±5.4 316 30.9±6.7
 WA-Western WA 180 11.9±5.4 155 23.5±7.9
WEST VIRGINIA 132 29.8±10.3 80 48.6±12.1
WISCONSIN 152 18.1±7.8 119 28.1±9.7
WYOMING 176 14.3±6.5 128 19.6±8.3
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 or 3 months). The denominator for the 2 day or 3 month rate is the number of infants breastfeeding at 2 days or 3 months, respectively. Formula supplementation rates at 6 months are not shown by geographic area due to an insufficient number of women breastfeeding at 6 months in many geographic areas.

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 (Alabama's Jefferson County; Arizona's Maricopa County; California's San Fresno, San Diego and Santa Clara Counties and Northern California; Denver, Colorado; Florida's Duval County; Georgia's Fulton/Dekalb Counties; Eastern Kansas; Louisiana's Orleans Parish; Baltimore City, Maryland; Boston, Massachusetts; Detroit, Michigan; Missouri's St. Louis County and City; Nevada's Clark County; Newark, New Jersey; Southern New Mexico; Ohio's Cuyahoga and Franklin Counties; Pennsylvania's Allegheny County; Tennessee's Davidson's and Shelby Counties; Washington's King County and Eastern Washington and Wisconsin's Milwaukee County) are not reported on in this table. States with fewer than 100 breastfed infants at 3 months of age are reported on, but the wide confidence interval around the estimate should be noted.