| Caucasian | African American | Hispanic | p-Value | |
| Weekly GWG [mean (SD)] | 2.07 (2.74) | 2.03 (2.93) | 1.75 (2.45) | 0.491 |
| BMI at delivery [mean (SD)] | 40.50 (7.14) | 42.71 (7.53) | 38.81 (6.08) | 0.000 |
| CMI—Maternal | ||||
| No complications | 56 (65.9%) | 46 (62.2%) | 304 (69.9%) | 0.364 |
| Has 1 or more complications | 29 (34.1%) | 28 (37.8%) | 131 (30.1%) | |
| Number of complications [mean (SD)] | 0.35 (0.50) | 0.43 (0.69) | 0.37 (0.62) | 0.377 |
| CMI—Fetal | ||||
| No complications | 65 (81.3%) | 47 (69.1%) | 346 (84.6%) | 0.008 |
| Has 1 or more complications | 15 (18.7%) | 21 (30.9%) | 63 (15.4%) | |
| Number of complications [mean (SD)] | 0.20 (0.43) | 0.36 (0.60) | 0.17 (0.43) | 0.005 |
| BMI at first PNV | ||||
| Class I obesity | 36 (42.9%) | 26 (35.1%) | 255 (59.3%) | 0.000 |
| Class II obesity | 25 (29.8%) | 21 (28.4%) | 106 (24.7%) | |
| Class III obesity | 23 (27.4%) | 27 (36.5%) | 69 (16.0%) |