Table 1 Maternal characteristics of among included patients

Age (year)

32.62 ± 5.14

32.47 ± 5.20

32.83 ± 5.04

1.182

0.237

Height (cm)

157.45 ± 4.90

157.60 ± 4.89

157.23 ± 4.91

1.294

0.196

Weight (kg)

64.99 ± 8.86

65.04 ± 8.75

64.91 ± 9.03

0.244

0.808

BMI (kg/m²)

26.21 ± 3.40

26.17 ± 3.40

26.27 ± 3.41

0.506

0.613

Gestational age (wk)

36.44 ± 2.41

36.83 ± 2.47

35.87 ± 2.20

7.120

0.001

Preterm labor (< 37 weeks)

658 (53.3%)

313 (42.5%)

345 (69.4%)

86.599

0.001

Gravity

3 (2–4)

2 (2–3)

3 (2–4)

6.822

0.001

Placenta accreta spectrum

252 (20.4%)

73 (9.9%)

179 (36.0%)

124.531

0.001

Anterior placenta

521 (42.2%)

228 (30.9%)

293 (59.0%)

95.515

0.001

Previous cesarean delivery

552 (44.7%)

224 (30.4%)

328 (66.0%)

152.187

0.001

Previous placenta previa

116 (9.4%)

53 (7.2%)

63 (12.7%)

10.485

0.001

Antepartum hemorrhage

493 (40.0%)

268 (36.4%)

225 (45.3%)

9.818

0.002

Emergency cesarean delivery

365 (29.6%)

237 (32.2%)

128 (25.8%)

5.842

0.016