Time (on coughing) | Group A (bupivacaine) N = 50 | Group B (Pethidine) N = 50 | P value |
4h | 3.7 ± 1.7 | 2.9 ± 1 | 0.005 |
8h | 3.8 ± 1.9 | 3.2 ± 1.4 | 0.0753 |
12h | 4.7 ± 2.1 | 3.3 ± 1.4 | 0.001 |
24h | 2.8 ± 1.4 | 2.2 ± 0.8 | 0.0099 |