Table 1.

Intra-group comparison for change in Pre-operative, 6 hours and 24 hour VAS score

Pre-operative		Mean Diff	P
Group I	Group II	-0.40000	0.638 (n.s)
	Group III	-0.20000	0.893 (n.s)
Group II	Group III	0.20000	0.893 (n.s)
After 6 hours		Mean Diff	P
Group I	Group II	-0.050	0.991 (n.s)
	Group III	-1.250	0.006 (s)
Group II	Group III	-1.200	0.009 (s)
After 24 hours		Mean Diff	P
Group I	Group II	-0.50000	0.390 (n.s)
	Group III	-1.10000*	0.014 (s)
Group II	Group III	-0.60000	0.261 (n.s)

S=Significant, n.s.=Not significant