Serum Carbohydrate Antigen 199 as a Biomarker for Evaluating Patients with Choledocholithiasis

Table 5

Multiple linear regression for WBC.

Variables	Std. error	Standardized coefficients			95.0% confidence interval for B		Collinearity statistics
		Beta			Lower bound	Upper bound	Tolerance	VIF
(Constant)	2.434		2.121	0.036	0.346	9.978
Gender	0.897	0.043	0.502	0.617	-1.325	2.225	0.965	1.037
Age	0.033	0.129	1.495	0.137	-0.016	0.116	0.942	1.061
CA199	0.002	0.212	2.077	0.04	0	0.007	0.677	1.476
Tbil	0.007	0.034	0.33	0.742	-0.011	0.015	0.678	1.474