Table 1 The characteristics of included patients

Age(y)

36.54 ± 2.02

32.69 ± 2.61

0.034

BMI(kg/m²)

27.14 ± 3.17

27.02 ± 2.44

0.069

Gestational age(w)

38.53 ± 3.06

38.29 ± 3.15

0.102

History of miscarriage

2(6.25%)

208(5.49%)

0.059

Gestational diabetes

19(59.38%)

406(10.72%)

0.006

Gestational hypertension

9(28.13%)

915(24.16%)

0.075

Vaginal delivery attempt

11(34.28%)

201(5.31%)

0.012

Premature rupture of membranes

28(87.50%)

268(7.08%)

0.027

Preoperative white blood cells (× 10⁹/L)

9.42 ± 3.16

8.55 ± 3.98

0.109

Preoperative red blood cells value(× 10¹²/L)

4.18 ± 1.67

4.22 ± 2.01

0.084

Preoperative hemoglobin (g/L)

96.12 ± 47.31

125.07 ± 44.52

0.025

Duration of surgery(min)

23.09 ± 9.22

23.15 ± 8.91

0.081

Estimated blood loss during surgery(ml)

528.19 ± 104.72

202.78 ± 59.23

0.001

Postoperative urinary tube implacement

27(84.38%)

1014(26.78%)

0.002