Table 1.

Summary of the multivariate logistic regression analysis.

	Estimate	Std. error	z value	p-value
(Intercept)	− 17.330	1,027.461	− 0.017	0.987
Age	− 0.003	0.010	− 0.305	0.761
Gender F	13.247	1,027.461	0.013	0.990
Gender M	13.881	1,027.461	0.014	0.989
ERCP vs CBDE	2.374	0.766	3.101	0.002
Follow up time	− 0.051	0.070	− 0.729	0.466