Table 3.

Final experimental model (EM) created using logistic regression

	β Coefficient	p Value	OR estimate	95% CI
Intercept	−2.6592	<0.0001
Age	−0.1473	0.005	0.863	0.778 to 0.957
Female sex	0.8088	0.003	2.245	1.297 to 3.886
History of postoperative nausea and vomiting	1.0086	<0.0001	2.742	2.072 to 3.629
History of motion sickness	0.4015	0.003	1.494	1.141 to 1.956
Maximum postoperative pain score	0.1200	<0.0001	1.128	1.065 to 1.194
Duration of surgery	0.1796	0.01	1.197	1.044 to 1.372
Surgery type (vs ‘other’)
Laparoscopic cholecystectomy	0.8401	0.001	2.317	1.373 to 3.907
Tubal ligation	0.6724	0.03	1.959	1.055 to 3.636
Pelviscopy	0.3143	0.06	1.369	0.983 to 1.908
Intraoperative fentanyl dose	0.00376	<0.0001	1.004	1.002 to 1.006
Intraoperative dexamethasone use	−0.3428	0.01	0.710	0.540 to 0.932
Intraoperative ondansetron use	−0.3458	0.02	0.708	0.530 to 0.946
Type of anesthesia (vs ‘other’)
Intravenous induction with inhalational agent maintenance (no N2O)	−0.3243	0.04	0.723	0.523 to 0.999
Inhalational induction with inhalational agent and N2O maintenance	0.6192	0.003	1.857	1.231 to 2.804
Monitored anesthesia care	−1.2323	<0.0001	0.292	0.180 to 0.471