Table 3: Any and Exclusive Breastfeeding Rates by Age among Children Born in 2004
(Percent +/- half 95% Confidence Interval)

U.S. National Breastfeeding Rates, 2004

  US National Number   US National Number
Ever breastfeeding 73.8±1.0 21035      
Breastfeeding at 7 days 72.5±1.0 21035 Exclusive breastfeeding1 at 7 Days 50.9±1.2 17654
Breastfeeding at 14 days 71.2±1.0 21035 Exclusive breastfeeding 14 days 48.3±1.2 17654
Breastfeeding at 21 days 68.7±1.1 21035 Exclusive breastfeeding 21 days 45.1±1.2 17654
Breastfeeding at 28 days 67.6±1.1 21035 Exclusive breastfeeding 28 days 43.8±1.2 17654
Breastfeeding at 42 days 63.2±1.1 21035 Exclusive breastfeeding 42 days 38.0±1.2 17654
Breastfeeding at 1 Month 67.1±1.1 21035 Exclusive breastfeeding 1 Month 43.2±1.2 17654
Breastfeeding at 2 Months 60.9±1.1 21035 Exclusive breastfeeding 2 Months 36.5±1.2 17654
Breastfeeding at 3 Months 55.4±1.1 21035 Exclusive breastfeeding 3 Months 30.5±1.1 17654
Breastfeeding at 4 Months 48.9±1.1 21035 Exclusive breastfeeding 4 Months 22.9±1.0 17654
Breastfeeding at 5 Months 44.3±1.1 21035 Exclusive breastfeeding 5 Months 14.9±09 17654
Breastfeeding at 6 Months 41.5±1.1 21035 Exclusive breastfeeding 6 Months 11.3 ±0.8 17654
Breastfeeding at 9 Months 27.9±1.0 21035      
Breastfeeding at 12 Months 20.9±0.9 21035      
Breastfeeding at 18 Months 6.7±0.6 21035    

Figure 4. Breastfeeding rates by age among children born in 2004. For data, see above.

1Exclusive breastfeeding information is from 2006 NIS survey data only and is defined as ONLY breast milk — NO solids, no water, and no other liquids.

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 DNPA breastfeeding analyses, the sample was limited to records with valid responses to the breastfeeding questions.