TABLE 4.
Effect of interpregnancy BMI change on the risk of cesarean delivery during the subsequent pregnancy among women with gestational diabetes and vaginal delivery in their baseline pregnancy
| Number of Deliveries | Odds Ratios of Cesarean Delivery at Subsequent Birth | ||||||
|---|---|---|---|---|---|---|---|
| BMI Change (kg/m2)1 | Total | Vaginal (%) | Cesarean (%) | OR2 | 95% CI | Adjusted OR3 | 95% CI |
| Less than -1 | 386 | 95.6 | 4.4 | 0.86 | 0.48-1.54 | 0.55 | 0.27-1.15 |
| -1 to 0.9 | 726 | 94.9 | 5.1 | 1.0 | 1.0 | ||
| 1 to 1.9 | 287 | 93.4 | 6.6 | 1.32 | 0.75-2.34 | 1.35 | 0.74-2.46 |
| 2 to 2.9 | 222 | 92.8 | 7.2 | 1.45 | 0.79-2.65 | 1.28 | 0.67-2.43 |
| Greater than 3 | 526 | 89.7 | 10.3 | 2.13 | 1.38-3.29 | 1.74 | 1.04-2.91 |
1
Missing BMI data for 434 (17%) women
2
Unadjusted
3
Adjusted for mother’s age, mother’s education, mother’s race/ethnicity, mother’s smoking during the subsequent pregnancy, pre-pregnancy weight of the baseline pregnancy, BMI gain during the baseline and subsequent pregnancy, interbirth interval, year of birth (subsequent pregnancy)