. Author manuscript; available in PMC: 2011 Mar 15.

Published in final edited form as: Pediatrics. 2010 Jun 29;126(1):e215–e221. doi: 10.1542/peds.2009-3353

TABLE 2.

Demographic Data Comparing Infants Whose Mothers Were Approached for Consent and Infants Whose Mothers Were Not Approached

	Infants Whose Mothers Were Approached (N = 2082)	Infants Whose Mothers Were Not Approached (N = 2290)	P
Maternal age, mean ± SD, y	27.5 ± 6.4	26.9 ± 6.8	.0071
White, non-Hispanic, n (%)	853 (41.0)	774 (33.9)	<.0001
Maternal gravidity, mean ± SD	2.7 ± 2.0	2.9 ± 2.1	.0844
Maternal parity, mean ± SD	2.2 ± 1.4	2.3 ± 1.5	.0463
Maternal education more than high school, n (%)	1134 (75.3)	1090 (68.3)	<.0001
Self-pay/uninsured, n (%)	130 (6.3)	228 (10.0)	<.0001
≥1 prenatal visit, n (%)	2015 (96.8)	2112 (92.4)	<.0001
No antenatal steroid treatment, n (%)	71 (3.4)	457 (20.0)	<.0001