Table 4.

Sensitivity analysis of women with an estimated postpartum hemorrhage ≥1500 mL

Independent risk factors	Adjusted OR	95% CI	P – value
Previous severe PPH	10.50	6.09 – 18.10	<0.001
Anticoagulant medication	4.33	2.39 – 7.88	<0.001
Anemia (Hb ≤ 9.0 g/dL)	2.43	1.45 – 4.08	0.001
Severe preeclampsia/HELLP	1.82	0.9 – 53.50	0.089
Uterine fibromas	2.66	1.58 – 4.46	<0.001
Multiple pregnancy	1.49	0.96 – 2.32	0.077
Mode of delivery
Spontaneous vaginal	Ref
Instrumental vaginal	1.10	0.82 – 1.47	0.409
In-labor cesarean	1.36	1.03 – 1.79	0.028
Elective cesarean	1.34	0.94 – 1.89	0.103
IVF/ICSI	1.78	1.21 – 2.61	0.004
Fever (>38 °C)	1.96	1.29 – 2.97	0.002
Labor induction	1.69	1.36 – 2.10	<0.001
Labor augmentation	1.65	1.32 – 2.05	<0.001
Birth weight > 4500 g	1.62	1.00 – 2.60	0.046
Primiparous	1.14	0.93 – 1.40	0.209

Area under ROC curve = 0.6927, Hosmer-Lemeshow χ ² = 8.77, p = 0.3618

PPH postpartum hemorrhage, Hb hemoglobin, HELLP hemolysis, elevated liver enzymes, low platelet count, IVF/ICSI in vitro fertilization/intra-cytoplasmic sperm injection