Table 1 Baseline characteristics of the study groups

Advanced age(≥ 35 years),n(%)

132(26.4%)

48(13.2%)

.001^a

BMI (kg/m²), median(P₂₅ ~ P₇₅)

21.4(20.0 ~ 23.4)

21.0(19.5 ~ 22.8)

.005^a

Dichorionic twins, n(%)

175(35.0%)

116(31.9%)

.803^a

Scarred uterus, n(%)

19 (3.8%)

54 (14.8%)

.001^a

Placenta previa, n(%)

37 (7.4%)

10 (2.7%)

.003^a

Placenta abruption, n(%)

12 (2.4%)

4 (1.1%)

.161

GDM, n(%)

172 (34.4%)

87 (23.9%)

.001^a

Preeclampsia, n(%)

325 (65%)

241(66.2%)

.712

PROM, n(%)

67 (13.4%)

78 (21.4%)

.002^a

Twin comorbidities, n(%)

84 (16.8%)

80 (22.0%)

.055^a