. Author manuscript; available in PMC: 2009 Nov 1.

Published in final edited form as: Am J Obstet Gynecol. 2008 Jun 9;199(5):523.e1–523.e6. doi: 10.1016/j.ajog.2008.04.017

Table 3.

Demographic Information by Maternal Race

Demographic Characteristics	Black n = 360	White n = 374	p value
Mean maternal age	25.6 ± 5.9	30.3 ± 6.3	0.13
Mean weight (in lbs) at enrollment	167.3 ± 43	150.9 ± 38	0.009
Elevated CRP > 75^th percentile	126 (35%)	58 (16%)	<0.001
Married	81 (23%)	278 (74%)	<0.001
Privately Insured	70 (19%)	264 (71%)	<0.001
Eligible for WIC/Food Stamps	129 (36%)	38 (10%)	<0.001
Primigravida	117 (33%)	175 (47%)	<0.001
Multiparous patients with previous preterm delivery	79 (22%)	47 (13%)	<0.001
Sexually transmitted disease	69 (19%)	27 (7%)	<0.001
Smoking during current pregnancy	74 (21%)	57 (15%)	0.06
Alcohol use during current pregnancy	48 (13%)	73 (20%)	0.02