Table 2 Multivariate logistic regression analysis of patient characteristics associated with postoperative nausea and vomiting

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