Effects of intervention | Bupivacaine Mean ± SD | Bupivacaine + Morphine Mean ± SD | P-value |
Duration of spinal anaesthesia (in minutes) | 294.75 ± 195.532 | 1004.25 ± 310.425 | <0.001 |
Pain severity in 24 hrs after surgery | 4.80 ± 1.105 | 1.90 ± 0.641 | <0.001 |
Pain severity in 48 hrs after surgery | 3.00 ± 0.725 | 1.70 ± 0.657 | <0.001 |
Pain Severity in 72 hrs after surgery | 2.75 ± 1.020 | 2.00 ± 0.973 | 0.022 |