Pain score

comparison

Group A

Group B

Group C

P value between

groups

Cumulative

P value

At 2 hrs in post op icu

1.67 ± 0.79

1.53 ± 0.70

3.93 ± 0.94

0.20*

0.001†

0.001‡

0.001

At 4 hrs in post op icu

1.68 ± 0.76

1.33 ± 0.96

3.98 ± 0.88

0.38*

0.001†

0.001‡

0.001

At 6 hrs in post op icu

2.61 ± 1.56

2.33 ± 0.96

4.92 ± 0.98

0.07*

0.001†

0.001‡

0.001

At 12 hrs in post op icu

4.27 ± 1.72

2.57 ± 1.81

6.03 ± 1.18

0.01*

0.001†

0.001‡

0.001