Table 1 Characteristics of women who underwent pre-labor cesarean section (PrlCS) or induction of labor (IOL)
Characteristic n (%) | PrlCS (n = 938) | IOL (n = 409) | P |
|---|---|---|---|
Maternal age (y) mean ± SD | 29.7 ± 6.1 | 30.5 ± 6.1 | 0.01 |
≥30 | 445 (47.4) | 212 (51.8) | 0.14 |
Parity ≥1 | 560 (59.7) | 208 (50.9) | 0.003 |
Previous cesarean section | 95 (10.1) | 18 (4.4) | 0.0005 |
Estimated fetal weight | |||
First twin (g) mean ± SD | 2245 ± 430 | 2284 ± 420 | 0.12 |
Second twin (g) mean ± SD | 2225 ± 422 | 2291 ± 432 | 0.008 |
Mode of delivery | |||
Vaginal for both | 0 | 240 (58.7) | |
Cesarean for both | 938 (100.00) | 155 (37.9) | < 0.0001 |
Vaginal/cesarean | 0 | 14 (3.4) | |
Presentation at delivery | |||
Cephalic/Cephalic | 503 (53.6) | 276 (67.5) | |
Cephalic/Non-cephalic | 376 (40.1) | 131 (32.0) | < 0.0001 |
First twin in non-cephalic | 58 (6.2) | 2 (0.5) | |
Gestational age at delivery (wk) | |||
Mean ± SD | 37.01 ± 1.35 | 37.51 ± 1.17 | < 0.0001 |
32 wk. 0 days to 33 wk. 6 days | 30 (3.2) | 3 (0.7) | |
34 wk. 0 days to 36 wk. 6 days | 328 (35.0) | 115 (28.1) | |
37 wk. 0 days to 38 wk. 6 days | 560 (59.7) | 270 (66.0) | < 0.0001 |
≥ 39 wk. 0 days | 20 (2.1) | 21 (5.1) | |
Interval between deliveries (min) Mean ± SD | 2.2 ± 3.2 | 12.2 ± 21.2 | < 0.0001 |
Use of antenatal corticosteroids | 274 (29.2) | 78 (19.1) | < 0.0001 |
Chorionicity at birth | |||
Dichorionic- diamnionic | 699 (74.5) | 304 (74.3) | 0.91 |
Monochorionic-diamnionic | 214 (22.8) | 92 (22.5) | |
Monochorionic-monoamniotic | 1 (0.1) | 1 (0.2) | |
Undocumented | 24 (2.6) | 12 (2.9) | |