Predicting Postoperative Vomiting for Orthopedic Patients Receiving Patient-Controlled Epidural Analgesia with the Application of an Artificial Neural Network

Table 3

The unadjusted and adjusted OR of some potential risk factors related to vomiting induced by PCEA.

	Unadjusted OR	95% CI		𝑃 value	Adjusted OR	95% CI		𝑃 value
		Lower	Upper			Lower	Upper
Gender (female)	8.143	2.710	24.463	<0.001	10.621	3.135	35.975	<0.001
Age (year)	1.014	0.986	1.043	0.338
Total knee replacement (TKA)	0.889	0.414	1.910	0.1763	0.39	0.152	1.000	0.049
Epidural level	0.361	0.118	1.103	0.074
Length (cm)	0.498	0.325	0.763	0.001	0.490	0.308	0.782	0.003
Height (cm)	0.960	0.919	1.003	0.069
Weight (kg)	0.973	0.943	1.004	0.086
Bolus dose (mL)	0.506	0.120	2.123	0.352
BMI (kg/m^2)	0.969	0.893	1.051	0.443