Cordprolaps

2 (6.9)

0

0

2

14.3

Severe preeclampsia

1 (3.4)

0

0

1

7.1

Failure to progress

7 (24.1)

4

26.6

3

21.4

General anesthesia

10 (34.5)

7

25.9

3

10.7

0.18

Gestational age, weeks (SD)

39.6 (1.60)

39.0

37.65 - 40.40

40.1

39.2 - 41.1

0.07

Assisted delivery

0.63

Forceps

4 (7.3)

3

11.1

1

3.6

Vacuum

8 (14.5)

4

14.8

4

14.3

Duration of expulsive efforts, minutes

13.5 (5.3 - 18.8)

13.0 (9.0 - 17.0)

14 (5.0 - 24.0)

0.73