Table 3.

ROC analysis of IgG4 level before treatment and Tbil level before treatment in the diagnosis of AIP.

Variables	Area	Std. Error	Sig.	95% CI
IgG4 before treatment	0.915	0.051	0.000	0.816–1.000
Tbil before treatment	0.707	0.078	0.019	0.553–0.860
IgG4/Tbil before treatment	0.919	0.050	0.000	0.822–-1.000
IgG4 and Tbil	0.921	0.049	0.000	0.826–1.000
IgG4, Tbil and IgG4/Tbil	0.924	0.050	0.000	0.826–1.000

ROC, receiver operating characteristics; IgG4, immunoglobulin G4; Tbil, total bilirubin; 95%CI, 95% confidence interval.