Praevia placenta

No

Yes

1.79 (1.41 - 2.26)

<0.0001

2.11 (1.57 - 2.82)

<0.0001

Prolonged labor

No

1.00

–

1.00

–

Yes

1.41 (1.13 - 1.77)

0.003

1.63 (1.23 - 2.17)

0.001

Context of caesarean

No emergency

1.00

–

1.00

–

Emergency

1.10 (1.01 - 1.20)

0.032

2.07 (0.70 - 6.15)

0.191

Length of cesarean

<60 mn

1.00

–

1.00

–

>60 mn

13.68 (11.61 - 16.14)

<0.0001

16.40 (13.63 - 19.74)

<0.0001