Table 3.

The differences of vomiting frequency between the studied groups 24 h after surgery.

Time from operation (hour)	Study Group		Statistica	P-value
	Ginger Group	Ondansetron Group
	Mean ± SD
0	0.3 ± 1.41	0.23 ± 1.36	1.07	0.28
2	0.45 ± 2.00	0.58 ± 1.46	2.9	0.004
4	0.39 ± 1.43	0.39 ± 0.82	0.95	0.34
8	0.47 ± 1.62	0.32 ± 0.5	0.98	0.34
16	0.27 ± 1.5	0.89 ± 0.28	0.98	0.32
24	0.11 ± 0.49	0.02 ± 0.13	0.34	0.72

^aMann–Whitney U test.