Table 2.

Simplified PONV score

	Group A mean (SD)	Group B mean (SD)	Mann–Whitney test Z value	p value
At 2 h	2 (0.47)	2.1 (0.56)	1.395	0.165	NS
4 h	1.6 (0.51)	2 (0.47)	5.882	0.000	HS
6 h	1 (0.8)	1.5 (0.7)	4.797	0.000	HS
8 h	0.2 (0.4)	0.6 (0.5)	6.371	0.000	HS