Table 4.
Mode of delivery outcome following IOL in prolonged pregnancy for women of mixed parity, primiparous women and multiparous women, according to maternal BMI group at pregnancy booking
| Unassisted vaginal delivery | Assisted vaginal delivery | Caesarean section delivery | |
|---|---|---|---|
| Delivery mode after IOL all women (n = 3076) | (n = 1742) | (n = 609) | (n = 725) |
| Underweight, (%) (n = 189) | 61.9 | 21.7 | 16.4 |
| Normal weight, (%) (n = 1315) | 57.9 | 23.1 | 18.9 |
| Overweight, (%) (n = 887) | 54.8 | 17.0 | 28.2 |
| Obese, (%) (n = 685) | 55.0 | 16.5 | 28.5 |
| P value | <0.001 | ||
| Delivery mode after IOL for primiparous women (n = 2066) | (n = 902) | (n = 545) | (n = 619) |
| Underweight, (%) (n = 149) | 54.4 | 26.8 | 18.8 |
| Normal weight, (%) (n = 910) | 46.5 | 29.7 | 23.8 |
| Overweight, (%) (n = 565) | 40.2 | 23.5 | 36.3 |
| Obese, (%) (n = 442) | 38.5 | 22.9 | 38.7 |
| P value | <0.001 | ||
| Delivery mode after IOL for multiparous women (n = 1010) | (n = 840) | (n = 64) | (n = 106) |
| Underweight, (%) (n = 40) | 90.0 | 2.5 | 7.5 |
| Normal weight, (%) (n = 405) | 83.9 | 8.2 | 7.9 |
| Overweight, (%) (n = 322) | 80.4 | 5.6 | 14.0 |
| Obese, (%) (n = 243) | 85.2 | 4.9 | 9.9 |
| P value | 0.998 | ||
Assisted vaginal delivery is defined as vaginal delivery requiring forceps or ventouse.
P < 0.05 indicates that the trend was significant by chi-square test.