Table 2 Neonatal characteristics in the first and second twins in twin deliveries after 32 completed gestational weeks and with vaginal delivery of the first twin
From: The effect of twin-to-twin delivery time intervals on neonatal outcome for second twins
First twin | Second twin | p-value | |
|---|---|---|---|
N = 527 | N = 527 | ||
Gestational age, days, mean (SD), median (range) | 262 (13.7) 262 (225–286) | ||
≥ 37 + 0 weeks | 327 (62) | ||
34 + 0–36 + 6 weeks | 168 (31.9) | ||
32 + 0–33 + 6 weeks | 32 (6.1) | ||
Fetal sex | |||
Female | 263 (49.9) | 260 (49.3) | 0.90 |
Male | 264 (50.1) | 267 (50.7) | |
Birthweight | |||
Birthweight, g, mean, (SD), median (range) | 2695 (488) 2723 (1285–4350) | 2673 (496) 2690 (1230–4065) | 0.46 |
< 2500 g | 187 (35.5) | 193 (36.6) | 0.75 |
< 1500 g | 3 (0.6) | 3 (0.6) | |
SGA (< −21%) | 113 (21.4) | 140 (26.6) | 0.06 |
LGA (> + 21%) | 2 (0.4) | 1 (0.2) | |
Weight difference, %, mean (SD), median (range) | −12.1 (11.1) − 12.2 (− 54.4 − + 25.6) | − 12.8 (11.9) − 12.5 (− 56 − + 26.8) | 0.31 |
Inter-twin birthweight discordance ≥25% | 27 (5.1) | ||
First twin larger than second twin | 16/27 (59.3) |