Comparison of the Effect of Inhalation Aromatherapy with 10% and 30% Peppermint Essential Oils on the Severity of Nausea in Abdominal Surgery Patients

Table 3

Comparing the mean of nausea before and after intervention in study groups.

	Groups	Mean differences ± SD^a	Test results
Preintervention	Control vs. 10% peppermint	−1.62 ± 3.22	t = 0.503^b; NS^c
	Control vs. 30% peppermint	−9.56 ± 3.51	T = −2.721
	30% peppermint vs. 10% peppermint	−7.93 ± 3.46	t = 2.189; NS
Postintervention	Control vs. 10% peppermint	6.63 ± 3.22	t = 2.060
	Control vs. 30% peppermint	7.38 ± 3.12	t = 2.364
	30% peppermint vs. 10% peppermint	0.750 ± 2.87	t = 0.260; NS

^astandard deviation. ^bbased on the independent samples t-test. ^cnonsignificant.