Exclusive Breastfeeding Rates by Socio-demographic Factors, Among Children Born in 2004 whose caregivers were interviewed after 2005
(Percent +/- half 95% Confidence Interval)
Socio-demographic
Factors		 n Exclusive Breastfeeding1
through 3 Months		 Exclusive Breastfeeding1
through 6 Months
US National 27391 31.5±0.9 12.1±0.7
Sex
  Male 14006 31.8±1.3 11.8±0.9
  Female 13385 31.1±1.2 12.5±0.9
Race/ethnicity
  American Indian or Alaska Native 931 29.7±4.8 11.8±3.3
  Asian or Pacific Islander 1831 32.2±3.6 15.1±2.7
    -Asian 1589 32.3±3.9 15.4±2.9
    -Native Hawaiian and other 305 30.1±8.6 12.9±5.8
  Black or African American 4327 22.4±2.1 8.4±1.3
  White 21812 33.2±1.0 12.6±0.8
  Hispanic or Latino 6014 32.2±2.1 13.0±1.6
  Not Hispanic or Latino (NH) 21377 31.2±1.0 11.8±0.7
    -NH Black or African American 3685 21.2±2.2 8.5±1.5
    -NH White 16725 33.6±1.1 12.3±0.7
Birth Order
  First Born 14504 32.2±1.3 12.5±0.9
  Not First Born 12887 30.6±1.3 11.6±0.9
Receiving WIC2
  Yes 12039 24.3±1.3 9.3±0.9
  No, but eligible 1313 39.9±4.3 14.3±2.8
  Ineligible 12772 39.9±1.3 15.0±1.0
Maternal Age, Years
  <20 595 17.1±5.5 7.9±4.5
  20-29 9881 27.3±1.5 9.1±1.0
  >=30 16915 35.2±1.2 14.5±0.9
Maternal Education<
  Not a High School Graduate 3420 25.3±2.5 11.1±1.9
  High School Graduate 5792 23.6±1.7 8.7±1.1
  Some College 6928 33.8±1.8 12.6±1.5
  College Graduate 11251 42.6±1.4 16.1±1.0
Maternal Marital Status
  Married 20679 35.9±1.1 13.9±0.8
  Unmarried3 6712 20.8±1.7 7.7±1.1
Residence
  MSA4, Central City 12682 32.0±1.4 12.7±1.1
  MSA, Non-Central City 9599 33.4±1.5 13.0±1.1
  Non-MSA 5110 25.0±1.8 8.3±1.0
Poverty Income Ratio5, %
  <100% 4914 24.4±2.0 9.4±1.4
  100%-184% 4354 28.7±2.3 10.3±1.6
  185%-349% 6509 34.3±1.8 12.4±1.2
  ≥350% 8895 38.7±1.6 14.6±1.1

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.