Final Breastfeeding Rates by Socio-demographic Factors, Among Children Born in 2005 (Percent +/- half 95% Confidence Interval)
Socio-demographic Factors Number Ever
Breastfeeding		 Breastfeeding1
at 6 Months		 Breastfeeding1
at 12 Months
US National 23714 74.1±1.0 42.9±1.1 21.5±0.9
Sex
Male 12067 74.9±1.3 43.3±1.5 21.5±1.3
Female 11647 73.3±1.4 42.5±1.5 21.4±1.2
Race/ethnicity
American Indian or Alaska 830 64.9±6.6 34.9±6.3 15.0±3.9
Asian or Pacific Islander 1571 81.9±3.9 56.4±4.6 32.1±4.2
 Asian 1326 81.3±4.4 56.7±5.1 31.3±4.5
 Native Hawaiian and other 315 87.5±6.0 55.6±9.1 37.6±9.4
Black or African American 3423 59.8±2.6 31.1±2.5 15.8±2.0
White 19216 76.9±1.0 44.7±1.2 22.2±1.0
Hispanic or Latino 4839 80.7±1.9 45.9±2.5 23.7±2.1
Not Hispanic or Latino (NH) 18875 71.5±1.1 41.7±1.1 20.6±0.9
 NH Black or African American 2977 57.2±2.8 29.5±2.5 14.8±2.1
 NH White 15011 74.6±1.2 43.8±1.3 21.2±1.0
Birth Order
First Born 12265 73.9±1.3 45.1±1.5 24.2±1.3
Not First Born 11449 74.3±1.4 40.5±1.5 18.4±1.2
Receiving WIC2
Yes 9933 67.4±1.5 33.9±1.6 16.9±1.3
No, but eligible 1124 75.1±4.2 53.0±5.1 32.4±5.0
Ineligible 11531 82.6±1.2 52.9±1.5 25.7±1.3
Maternal Age, Years
<20 518 51.8±7.3 18.6±5.6 8.9±4.0
20-29 8187 69.7±1.7 35.1±1.8 15.4±1.3
>=30 15009 78.4±1.1 49.8±1.4 26.4±1.2
Maternal Education
Not a High School Graduate 2813 66.3±2.8 36.4±3.0 19.7±2.4
High School Graduate 4347 67.5±2.0 33.9±2.2 16.4±1.7
Some College 6504 74.1±1.7 38.9±2.0 18.6±1.7
College Graduate 10050 86.1±1.1 59.1±1.5 29.7±1.4
Maternal Marital Status
Married 18003 79.4±1.0 49.5±1.2 25.1±1.1
Unmarried3 5711 61.9±2.0 27.8±2.0 13.1±1.6
Residence
MSA4, Central City 10164 75.9±1.5 45.0±1.7 23.5±1.4
MSA, Non-Central City 8845 75.9±1.4 44.1±1.7 21.3±1.4
Non-MSA 4705 64.5±2.3 34.4±2.2 16.7±1.6
Poverty Income Ratio5, %
<100% 4288 66.6±2.3 35.7±2.5 18.8±2.1
100%-184% 3573 70.2±2.5 37.6±2.8 20.0±2.3
185%-349% 5601 75.5±1.9 44.7±2.1 22.8±1.7
≥350% 8136 82.6±1.4 51.6±1.8 23.7±1.5

1Breastfeeding with or without the addition of complementary liquids or solids
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.