There were statistically significant differences between Group I and Group II in the median time to first paracetamol ( 800 vs 520 min , p = 0.01 ) , mean pain scores postoperative day 1 ( 1.9 2.0 vs 3.5 2.2 , p = 0.05 ) , mean pain score-postoperative day 2 ( 0.8 1.6 vs 2.3 2.0 , p = 0.03 ) and mean frequencies of paracetamol given on postoperative day 2 ( 0.3 0.8 vs 1.1 1.0 , p = 0.02 ) .