Table 5. Summary of efficacy results (N = 50 in each group).

	Control	Placebo	M. × piperita	M. spicata
					p value*
Retching episodes	3.1 ± 1.3	7.2 ± 2.3	2.4 ± 2.4	3.8 ± 1.2	<0.0001
intensity of nausea	52.8 ± 20.7	14.6 ± 9.1	42.1 ± 22.7	43.9 ± 12.4	<0.0001
Vomiting episodes	1.1 ± 0.4	1.8 ± 0.9	0.7 ± 0.9	0.6 ± 0.3	<0.0001