Table 3 Multivariable logistic model for severe postpartum hemorrhage

Previous severe PPH

8.97

5.25 – 15.33

<0.001

Anticoagulant medication

4.79

2.72 – 8.41

<0.001

Anemia (Hb ≤ 9.0 g/dL)

4.27

2.79 – 6.54

<0.001

Severe preeclampsia or

HELLP syndrome

3.03

1.74 – 5.27

<0.001

Uterine fibromas

2.71

1.69 – 4.35

<0.001

Multiple pregnancy

2.11

1.39 – 3.22

<0.001

 Spontaneous vaginal

Ref.

 Instrumental vaginal

1.50

1.17 – 1.93

0.001

 In-labor cesarean

1.95

1.53 – 2.47

<0.001

 Elective cesarean

1.66

1.22 – 2.24

0.006

IVF/ICSI

1.88

1.33 – 2.65

<0.001

Fever (>38 °C)

1.88

1.28-2.75

0.001

Labor induction

1.69

1.39 – 2.05

<0.001

Labor augmentation

1.59

1.32 – 1.91

<0.001

Birth weight > 4500 g

1.46

1.01 – 2.12

0.046

Primiparity

1.20

0.99 – 1.44

0.055