TABLE 3.
Effect of treatment group and BMI category on pregnancy outcomes1
| Normal weight |
Overweight |
|||
| Control group (n = 92) | Intervention group (n = 90) | Control group (n = 86) | Intervention group (n = 81) | |
| Infant birth weight (g) | 3271 ± 4672 | 3367 ± 459 | 3442 ± 629 | 3430 ± 650 |
| Low birth weight, <2500 g (n) | 5 | 4 | 4 | 5 |
| Macrosomia, >4000 g (n) | 3 | 6 | 14 | 14 |
| Weeks’ gestation at delivery | 38.4 ± 2.0 | 39.0 ± 1.7 | 38.7 ± 2.1 | 38.4 ± 2.7 |
| Preterm delivery, <36 wk (n) | 13 | 6 | 7 | 10 |
| Cesarean delivery (n) | 25 | 24 | 42 | 33 |
| Preeclampsia (n) | 9 | 3 | 11 | 17 |
| Maternal hypertension (n) | 11 | 3 | 11 | 17 |
| Gestational diabetes (n) | 6 | 8 | 7 | 11 |
1
Multiple logistic regression analyses indicated a significant treatment-by-weight interaction for maternal gestational hypertension [odds ratio (OR): 0.15; 95% CI: 0.02, 0.75; P = 0.02] and significant main effects for weight category, with lower odds of macrosomia (OR: 0.26; 95% CI: 0.06, 0.99; P = 0.05) and cesarean delivery (OR: 0.38; 95% CI: 0.26, 0.74; P = 0.004) for normal-weight women than for overweight or obese women.
2
Mean ± SD (all such values).