Table 1.
Baseline characteristics for women in the cohort compared by BMI
| BMI<30 (n=728) |
BMI 30-39.9 (n=1087) |
BMI 40-49.9 (n=428) |
BMI ≥ 50 (n=201) |
P value | |
|---|---|---|---|---|---|
| Advanced Maternal Age (n=274) |
11.1% | 11.0% | 11.2% | 12.4% | 0.95 |
| Nulliparity (n=963) | 44.1% | 40.0% | 35.3% | 28.4% | <0.01 |
| African American race (n=1628) |
55.4% | 69.1% | 76.4% | 73.1% | <0.01 |
| Tobacco use (n=414) | 16.6% | 17.1% | 17.3% | 16.4% | 0.99 |
| Drug use (n=194) | 8.1% | 8.3% | 7.9% | 5.5% | 0.60 |
| Gestational Diabetes (n=173) |
3.2% | 6.7% | 11.9% | 12.9% | <0.01 |
| Pre-gestational Diabetes (n=104) |
0.8% | 3.4% | 8.2% | 12.9% | <0.01 |
| Chronic Hypertension (n=131) |
1.4% | 4.9% | 8.9% | 14.9% | <0.01 |
| Pre-Eclampsia (n=124) | 4.1% | 5.1% | 5.6% | 7.5% | 0.26 |
| Prior cesarean (n=1033) |
37.5% | 42.0% | 44.9% | 55.2% | <0.01 |