Table 3.

Multivariate binary logistic regression of severe morbidity.

Intercept and variable	β	95% CI	OR	95% CI	P
Intercept	2.581	−0.032, 5.193	13.207	0.969, 180.053	0.053
Gender (female/male)	−0.930	−1.564, 0.295	0.395	0.209, 0.745	0.004
BMI (kg/m2)	−0.246	−0.358, −0.134	0.782	0.699, 0.875	<0.001
Coronary heart disease	0.803	0.165, 1.441	2.232	1.179, 4.224	0.014
Arrhythmia	1.310	0.010, 2.611	3.708	1.010, 13.615	0.048
Radiographic tumor size (cm)	0.123	0.006, 0.239	1.130	1.006, 1.271	0.040
IHD	1.058	0.321, 1.795	2.880	1.378, 6.017	0.005
Duration of surgery (minutes)	0.005	0.0002, 0.010	1.005	1.000, 1.010	0.039
Area under ROC curve
Development dataset	0.807	0.751, 0.864
Validation dataset	0.818	0.745, 0.891

The β coefficient, odds ratio, and 95% CI were measured through binary logistic regression.

IHD, intraoperative hemodynamic instability; OR, odds ratio.