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. Author manuscript; available in PMC: 2010 Mar 18.
Published in final edited form as: Am J Perinatol. 2008 Apr;25(4):233–237. doi: 10.1055/s-2008-1066875

Table 1. Summary of baseline variables by BMI category.

< 25 (n=339) 25-29.9 (n=200) ≥ 30 (n=199) p-value

TV + at randomization 42 (12%) 16 (8%) 23 (12%) 0.27

Black race 240 (71%) 145 (73%) 167 (84%) 0.002

Married 96 (28%) 76 (38%) 55 (28%) 0.03

Maternal age 22.5 ± 5.4 24.1 ±5.7 24.2 ± 5.4 <0.0001

Source of medical care payment 0.30
 Government 288 (85%) 165 (83%) 179 (90%)
 Private insurance 19 (6%) 12 (6%) 7 (4%)
 None/self-paid 32 (9%) 23 (12%) 13 (7%)

Smoked during pregnancy 74 (22%) 26 (13%) 30 (15%) 0.02

Alcohol during pregnancy 29 (9%) 15 (8%) 13 (7%) 0.69

Lifetime sexual partners 0.21
 1-2 85 (25%) 47 (24%) 40 (20%)
 3-5 155 (46%) 78 (39%) 85 (43%)
 6 or more 99 (29%) 74 (37%) 73 (37%)

Number of times/week patient had intercourse 0.85
 Up to 1 188 (55%) 117 (59%) 109 (55%)
 2-4 127 (37%) 72 (36%) 79 (40%)
 5 or more 24 (7%) 11 (6%) 11 (6%)

Parity 0.13
 0 163 (48%) 76 (38%) 85 (43%)
 1 98 (29%) 61 (31%) 56 (28%)
 2 or more 78 (23%) 63 (32%) 58 (29%)