Group

Time of ripening

Labor duration

x²

p

Hours (hrs)

≤8 hrs

>8 hrs

Catheter

1 insertion

2 insertions

Misoprostol

1 or 2 insertion

≥3 insertions

12

24

6 - 12

12 - 24

15

16

53

6

7

27

7

4

38.024

<0.0001