Table 3.

Univariate logistic regression for factors related to anesthesia and postpartum bleeding above 500 mL and above 1000 mL within 2 hours.

Blood loss		OR (95% CI)a	p-value	n
≥ 500 mL within 2 h	Anesthesia Yes vs. No	0.81 (0.43–1.56)	0.54	236
	Epidural vs. Spinal + Epidural	2.71 (0.54–13.48)	0.22	137
	Spinal vs. Spinal + Epidural	0.98 (0.37–2.58)	0.96	137
	Bup + FNT vs. Bup + SFNT	0.24 (0.03–1.82)	0.17	137
≥ 1000 mL within 2 h	Anesthesia Yes vs. No	0.56 (0.18–1.67)	0.29	236
	Epidural vs. Spinal + Epidural	1.01 (0.04–24.70)	0.99	137
	Spinal vs. Spinal + Epidural	1.25 (0.22–7.04)	0.80	137
	Bup + FNT vs. Bup + SFNT	3.16 (0.15–67.84)	0.46	137

^aAdjusted for BMI, morbidities, forceps, and episiotomy (BUP, Bupivacaine; FNT, Fentanyl; SFNT, Sufentanil).