Endoscopic retrograde cholangiopancreatography for suspected choledocholithiasis: From guidelines to clinical practice

Table 1 Baseline characteristics of the study population n (%)

Variable	Total (n= 268)
Gender, female	161 (60.1)
Age, mean ± SD	66.8 ± 16.8
Very strong predictors
Clinical ascending cholangitis	36 (13.4)
Common bile duct stone on US	109 (40.7)
Total bilirubin > 4 mg/dL	102 (38.1)
Strong predictors
Total bilirubin 1.8-4 mg/dL	84 (31.3)
Dilated common bile duct on US	195 (72.8)
Moderate predictors
Abnormal liver function test	231 (86.2)
Age > 55 yr	197 (73.5)
Gallstone pancreatitis	63 (23.5)

US: Ultrasonography.