Table 4.

Risk factor analysis of bile leakage after surgery

	P	OR	95% confidence interval
			Upper limit	Lower limit
Surgical approach (primary closure vs T-tube drainage)	0.090	7.602	0.729	79.286
Sex (male vs female)	0.379	2.257	0.369	13.813
Age	0.263	0.996	0.908	1.027
WBC	0.975	0.994	0.679	1.456
Albumin	0.025	0.790	0.642	0.971
Total bilirubin	0.012	0.979	0.648	0.912
Direct bilirubin	0.560	1.014	0.968	1.061
ALT	0.519	0.998	0.991	1.005
AST	0.782	0.999	0.990	1.007
Diameter of CBD	0.359	0.850	0.609	1.203
No. of CBD stones (single/multiple)	0.121	6.574	0.609	70.939
Operation time	0.643	0.999	0.969	1.020
Blood loss	0.954	0.999	0.980	1.019

OR, odds ratio; WBC, white blood cell; ALT, alanine aminotransferase; AST, aspartate aminotransferase; CBD, common bile duct