Provisional Exclusive Breastfeeding Rates by Socio-demographic Factors, Among Children Born in 2007 (Percent +/- half 95% Confidence Interval)
Socio-demographic
Factors		 n Exclusive Breastfeeding1
through 3 Months		 Exclusive Breastfeeding1
through 6 Months
US National 16336 33.0±1.2 13.3±0.9
Sex
  Male 8393 33.1±1.7 12.9±1.2
  Female 7943 32.9±1.8 13.7±1.3
Race/ethnicity
  American Indian or Alaska Native 538 27.6±7.3 13.2±6.3
  Asian or Pacific Islander 1048 34.1±6.0 14.5±4.3
    -Asian 860 34.5±6.6 16.8±5.2
    -Native Hawaiian and other 234 31.0±11.8 6.5±3.9
  Black or African American 2569 22.7±2.4 8.2±1.5
  White 13194 35.3±1.4 14.4±1.0
  Hispanic or Latino 2855 33.4±3.0 13.4±2.2
  Not Hispanic or Latino (NH) 13481 32.9±1.3 13.2±0.9
    -NH Black or African American 2276 21.9±2.5 8.0±1.5
    -NH White 10738 35.8±1.5 14.8±1.0
Birth Order
  First Born 8679 33.4±1.7 13.8±1.2
  Not First Born 7657 32.6±1.8 12.6±1.2
Receiving WIC2
  Yes 6725 25.5±1.8 9.2±1.2
  No, but eligible 916 39.9±5.6 19.2±4.8
  Ineligible 8007 41.9±1.8 17.7±1.3
Maternal Age, Years
  <20 356 18.1±6.4 7.9±4.7
  20-29 5370 28.8±2.1 10.2±1.3
  >=30 10610 36.6±1.6 15.5±1.2
Maternal Education
  Not a High School Graduate 1784 23.7±3.3 9.2±2.3
  High School Graduate 3017 25.8±2.5 8.9±1.5
  Some College 4224 34.1±2.5 14.4±2.1
  College Graduate 7311 45.9±1.9 19.6±1.4
Maternal Marital Status
  Married 12200 39.0±1.5 16.7±1.2
  Unmarried3 4136 20.9±2.2 6.4±1.2
Residence
  MSA4, Central City 7051 32.8±2.0 13.3±1.3
  MSA, Non-Central City 5880 34.9±2.0 13.9±1.5
  Non-MSA 3405 28.8±2.4 11.8±1.7
Poverty Income Ratio5, %
  <100% 3153 25.0±2.7 8.6±1.7
  100%-184% 2487 31.7±3.0 12.7±2.1
  185%-349% 3670 36.0±2.5 14.6±1.7
  ≥350% 5675 41.1±2.1 17.6±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.