Final Exclusive Breastfeeding Rates by Socio-demographic Factors, Among Children Born in 2006 (Percent +/- half 95% Confidence Interval)
Socio-demographic
Factors		 n Exclusive Breastfeeding1
through 3 Months		 Exclusive Breastfeeding1
through 6 Months
US National 24387 33.6±1.0 14.1±0.8
Sex
  Male 12581 33.3±1.4 13.8±1.1
  Female 11806 34.0±1.5 14.4±1.1
Race/ethnicity
  American Indian or Alaska Native 783 27.8±6.0 10.5±4.9
  Asian or Pacific Islander 1530 39.1±4.6 19.1±4.1
    -Asian 1251 41.1±5.1 20.2±4.7
    -Native Hawaiian and other 349 33.0±8.4 13.6±5.5
  Black or African American 3740 21.2±2.0 7.2±1.2
  White 19713 35.9±1.2 15.1±0.9
  Hispanic or Latino 4496 35.1±2.5 14.8±1.9
  Not Hispanic or Latino (NH) 19891 33.1±1.1 13.8±0.8
    -NH Black or African American 3303 20.0±2.1 6.8±1.2
    -NH White 15856 35.9±1.2 15.1±0.9
Birth Order
  First Born 12754 35.5±1.5 15.0±1.1
  Not First Born 11633 31.5±1.4 13.0±1.0
Receiving WIC2
  Yes 10156 25.7±1.5 9.9±1.1
  No, but eligible 1259 38.3±4.3 19.7±3.5
  Ineligible 11889 42.6±1.5 18.1±1.1
Maternal Age, Years
  <20 472 18.0±5.9 5.5±3.8
  20-29 8067 29.1±1.8 11.2±1.3
  >=30 15848 37.3±1.3 16.3±1.0
Maternal Education
  Not a High School Graduate 2642 26.5±2.8 11.3±2.1
  High School Graduate 4669 27.1±2.0 10.6±1.4
  Some College 6552 32.8±1.9 12.5±1.3
  College Graduate 10524 45.8±1.5 20.5±1.3
Maternal Marital Status
  Married 18425 39.7±1.2 17.0±0.9
  Unmarried3 5962 20.3±1.8 7.6±1.2
Residence
  MSA4, Central City 10399 34.3±1.7 14.0±1.2
  MSA, Non-Central City 8843 34.6±1.6 15.0±1.2
  Non-MSA 5145 29.4±2.0 11.9±1.5
Poverty Income Ratio5, %
  <100% 4436 25.7±2.3 11.0±1.7
  100%-184% 3828 30.9±2.5 12.6±1.9
  185%-349% 5670 37.3±2.1 14.8±1.5
  ≥350% 8381 40.7±1.7 17.6±1.3

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.