Table 4 Sensitivity analysis of women with an estimated postpartum hemorrhage ≥1500 mL

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

 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