TABLE 1

Characteristics of the Study Sample According to Infants' Age at Weaning

Characteristic	Total (N = 1323), %	Infants' Age When Breastfeeding Was Completely Stopped, mo
Characteristic	Total (N = 1323), %	<1 (n = 320), %	1–2 (n = 302), %	3–5 (n = 268), %	6–8 (n = 183), %	≥9 (n = 250), %
Age, y^a
18–24	22.6	35.3	24.8	21.3	13.7	11.6
25–29	34.0	32.2	33.8	34.7	35.0	35.2
30–34	28.0	21.9	24.5	29.5	32.2	35.6
≥35	15.3	10.6	16.9	14.6	19.1	17.6
Marital status^a
Unmarried	21.3	30.9	28.5	20.2	11.5	8.8
Married	78.7	69.1	71.5	79.9	88.5	91.2
Parity^a
Primiparous	32.7	41.6	33.4	33.6	26.2	24.4
Multiparous	67.3	58.4	66.6	66.4	73.8	75.6
Education^a
High school or less	20.0	28.1	22.5	16.0	16.4	13.2
Some college	40.6	47.5	44.0	38.8	32.8	35.2
College graduate	39.5	24.4	33.4	45.2	50.8	51.6
Income as percentage of federal poverty level^a
<185%	39.0	46.6	42.0	34.3	32.8	35.2
185%–349%	35.0	31.9	33.8	34.7	39.3	37.6
≥350%	26.0	21.6	24.2	31.0	27.9	27.2
Postpartum WIC participation^a
No	62.1	48.8	53.6	65.3	79.8	72.8
Yes	37.9	51.3	46.4	34.7	20.2	27.2
Race
Non-Hispanic white	84.1	84.7	79.5	84.0	85.8	87.6
Non-Hispanic black	4.4	6.6	4.3	4.5	2.7	2.8
Hispanic	7.3	6.9	9.3	7.8	6.6	5.6
Other	4.2	1.9	7.0	3.7	4.9	4.0
Region^a
Northeast	15.3	13.4	16.6	14.6	14.2	18.0
Midwest	30.8	34.7	29.5	31.7	29.0	28.0
South	33.2	37.5	35.4	32.1	30.6	28.0
West	20.6	14.4	18.5	21.6	26.2	26.0