Time

(at rest)

Group A (Bupivacaine)

N = 50

Group B (Pethidine)

N = 50

P value

4 h

2.9 ± 1

2.5 ± 0.6

0.02*

8 h

3 ± 1

2.7 ± 0.9

0.118

12 h

3.6 ± 1

3.1 ± 0.9

0.01*

24 h

2.3 ± 0.7

2.1 ± 0.4

0.0825