Table 2.

Characteristics of mothers with six follow-ups compared to mothers which any feeding information

	Total sample with any infant feeding information		Sample with complete feeding information in the first 6 months		p - values, comparing the two samples (Chi2-square tests)
	n = 2988	%	n = 1899	%
Age
18-24	686	23.0	425	22.5	0.82
25-34	1835	61.6	1166	61.7
35-43	456	15.3	300	15.9
Missing	11		8
Race/Ethnicity
White	2458	84.6	1570	84.8	0.62
Black	135	4.7	75	4.1
Hispanic	179	6.2	110	5.9
Other	134	4.6	96	5.2
Missing	82		48
Region
Northwest	516	17.3	342	18.0	0.86
Midwest	903	30.2	576	30.3
South	967	32.4	596	31.4
West	602	20.2	385	20.3
Education
HS graduate or less	574	23.2	350	21.9	0.36
College graduate	1903	76.8	1245	78.1
Missing	511		304
Income (% of poverty)
< 185%	1247	41.7	834	42.9	0.71
185%-349%	1072	35.9	681	35.0
≥350%	669	22.4	429	22.1
Employed
Full-time	1958	77.0	1267	77.2	0.91
Part-time	327	12.9	214	13.0
Unemployed	259	10.2	161	9.8
Missing	444		257
Area of employment
Administrative, etc.	844	36.4	530	35.4	0.65
Operator, Farming	130	5.6	98	6.6
Sales, Service	293	12.6	186	12.4
Not employed	1051	45.3	682	45.6
Missing	670		403
Smoking status
Yes	306	10.2	188	9.9	0.69
No	2682	89.8	1711	90.1
Health insurance
Yes	2847	95.4	1812	95.5	0.81
No	138	4.6	85	4.5
Missing	3		2
WIC status
Yes	933	31.3	574	30.3	0.45
No	2050	68.7	1323	69.7
Missing	5		2
Marital Status
Yes	2190	79.2	1398	78.8	0.73
No	576	20.8	377	21.2
Missing	222		124
Parity
0	849	28.4	560	29.5
1	1187	39.7	737	38.8
2 and higher	876	29.32	555	29.23	0.70
Missing	76		47