Pain assessment (according to VAS)

Delivery under analgesia N = 35 (mean ± SD)

Delivery without analgesia N = 79 (mean ± SD)

p-value

Before the start of the active phase

8.6 ± 0.7

8.7 ± 1.0

0.368

Active phase

1.2 ± 0.9

9.2 ± 0.6

<0.0001

During the eviction

1.6 ± 1.0

5.4 ± 0.9

<0.001

At the 6th hour post partum

1.5 ± 0.7

1.9 ± 0.7

0.004