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 |