Table 3:

The number and percentage of nausea and vomiting at various postoperative intervals in groups receiving ondanesteron (group O), dexamethasone (group D) or distilled water (group DW)

Group	0-2 hours after operation	2-8 hours after operation	8-16 hours after operation	16-24 hours after operation
O	(17.8%) 13	(49.3%) 36	(53.4%) 39	(9.5%) 7
D	(23/28%) 17	(54.7% )40	(21.9% )16	(2.7%) 2
DW	(21/9%) 16	(75.3%) 55	(100%) 73	(27.3) 20
	P=0.193	P=0.003	P<0.001	P<0.001