Table 2.

Multivariable logistic regression model of risk factors for PONV

Variable	Odds ratio	95% CI	P value
Anxiety scorea	1.220	1.041–1.452	0.018
Age (years)	0.989	0.932–1.052	0.704
Sex (female)	6.509	1.459–33.439	0.017
Smoking history (smoker)	0.412	0.087–1.940	0.253
History of PONV	1.381	0.125–11.934	0.775

PONV: postoperative nausea and vomiting

CI: confidence interval

^aAnxiety score was quantified using the Hospital Anxiety and Depression Scale.