Group A (n = 31)

Group B (n = 31)

Group C (n = 31)

p value

Group A vs. B

Group A vs. C

Group B vs. C

Analgesia duration

(min.)

930.52 ± 22.04

899.35 ± 21.82

850.32 ± 20.65

0.002*

<0.001*

<0.001*