Table 1 Baseline characteristics by method of induction
From: The effect of induction method in twin pregnancies: a secondary analysis for the twin birth study
Baseline characteristic n (row per cent) | Prostaglandin N = 153 | No prostaglandin N = 215 | p-value |
|---|---|---|---|
Maternal age (years) | 30.8 ± 6.2 | 30.1 ± 6.1 | 0.42 |
<30 | 71 (39.4%) | 109 (60.6%) | 0.42 |
≥30 | 82 (43.6%) | 106 (56.4%) | |
Parity | |||
0 | 83 (46.4%) | 96 (53.6%) | 0.07 |
≥1 | 70 (37.0%) | 119 (63.0%) | |
Gestational age at randomization (weeks) | 35.1 ± 1.9 | 35.0 ± 1.9 | 0.88 |
320-336 weeks | 55 (43.7%) | 71 (56.3%) | |
340-366 weeks | 61 (38.9%) | 96 (61.1%) | 0.66 |
370-386 weeks | 37 (43.5%) | 48 (56.5%) | |
Chorionicity on ultrasound | |||
Dichorionic diamniotic | 117 (43.2%) | 154 (56.8%) | 0.18 |
Monochorionic diamniotic | 29 (42.0%) | 40 (58.0%) | |
Unknown | 7 (25.0%) | 21 (75.0%) | |
Birth weight of first twin | 2291.9 ± 402.6 | 2301.9 ± 430.0 | 0.82 |
Birth weight of second twin | 2276.9 ± 449.7 | 2322.8 ± 417.2 | 0.31 |
National perinatal mortality rate | |||
<10/1000 | 116 (45.7%) | 138 (54.3%) | |
≥10/1000 | 37 (32.5%) | 77 (67.5%) | 0.02 |