Cesarean delivery Group | Vaginal delivery Group | t or X2 | p value | Perineal laceration Group | Episiotomy Group | Forceps assisted Group | F or X2 | p value | |
---|---|---|---|---|---|---|---|---|---|
(2020) | (2749) | (398) | (2279) | (72) | |||||
Age(y) [mean ± sd] | 28.3 ± 3.0 | 27.7 ± 2.9 | 7.017 | 0.000 | 27.7 ± 2.8 | 27.7 ± 2.9 | 28.1 ± 2.8 | 0.639 | 0.528 |
BMI of delivery (kg/m2) [mean ± sd] | 27.3 ± 2.6 | 27.5 ± 2.7 | −1.658 | 0.098 | 27.5 ± 2.8 | 27.4 ± 2.7 | 27. 8 ± 2.6 | 0.656 | 0.519 |
Birth weight(g) [mean ± sd] | 3322.0 ± 550.0 | 3252.6 ± 476.1 | 4.554 | 0.000 | 3226.3 ± 334.2 | 3254.8 ± 499.1 | 3329.2 ± 385.0 | 1.563 | 0.210 |
Gestational weight gain(kg)[mean ± sd] | 15.9 ± 7.0 | 15.6 ± 7.2 | 1.470 | 0.142 | 15.6 ± 6.7 | 15.6 ± 7.3 | 14.6 ± 6.2 | 0.639 | 0.528 |
Gestational age at birth(w) [mean ± sd] | 39.2 ± 1.4 | 39.3 ± 1.4 | −0.638 | 0.523 | 39.2 ± 1.3 | 39.3 ± 1.4 | 39.7 ± 1.1 | 2.135 | 0.094 |
Rate of GDM (%) | 30.0 (605/2020) | 26.0 (714/2749) | 9.009 | 0.003 | 24.1 (96/398) | 26.0 (593/2279) | 25 (18/72) | 0.660 | 0.719 |
Duration of 2nd sta(m) [median(95%CI)] | / | 26(7–110) | / | / | 29(6–77) | 25(7112) | 28(11–129) | 4.258 | 0.119 |