CYGB and preeclampsia: Multivariate analysis identified a history of more than one previous cesarean delivery (HR: 2.34, 95% CI: 1.24–4.42, p = 0.009), preoperative HGB level ≤100 g/L (HR: 2.28, 95% CI: 1.19–4.40, p = 0.013), and preeclampsia (HR: 2.93, 95% CI: 1.10–7.82, p = 0.032) as independent risk factors for emergency cesarean delivery.