Table 2.

Multivariate logistic regression analysis of patient characteristics associated with postoperative nausea and vomiting

Variable	OR [95%CI]	P value
Female sex	2.07 [1.04–4.13]	0.039
History of PONV/motion sickness	3.60 [1.84–7.05]	< 0.001
Non-smoking status	1.17e+7 [0.00–∞]	0.983
Duration of anesthesia, min	1.00 [0.99–1.01]	0.498
Sevoflurane	1.16 [0.71–1.89]	0.548
Intraoperative droperidol	0.46 [0.27–0.78]	0.004
Intraoperative opioids	7.16 [0.77–66.80]	0.084
Postoperative opioids	1.50 [0.66–3.39]	0.335
Dexamethasone added to PAI	0.23 [0.12–0.44]	< 0.001

CI confidence interval, OR odds ratio, PAI periarticular anesthetic infiltration, PONV postoperative nausea and vomiting