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

Table 2 Predictors of choledocholithiasis - univariate analysis n (%)

Variable	Choledocholithiasis on ERCP	No Choledocholithiasis on ERCP	OR	95%CI	Pvalue
Very strong predictors
Clinical ascending cholangitis	33 (91.7)	3 (8.3)	6.48	1.93-21.80	0.001
Common bile duct stone on US	100 (91.7)	9 (8.3)	11.25	5.32-23.81	< 0.001
Total bilirubin > 4 mg/dL	76 (74.5)	26 (25.5)	1.79	1.04-3.08	0.035
Strong predictors
Total bilirubin 1.8-4 mg/dL	63 (75.0)	21 (25.0)	3.15	1.63-6.08	0.001
Dilated common bile duct on US	150 (76.9)	45 (23.1)	5.06	2.85-8.99	< 0.001
Moderate predictors
Abnormal liver function test	161 (69.7)	70 (30.3)	2.43	1.20-4.90	0.012
Age > 55 yr	142 (72.1)	55 (27.9)	2.37	1.36-4.15	0.002
Gallstone pancreatitis	36 (57.2)	27 (42.8)	0.58	0.32-1.03	0.063

ERCP: Endoscopic retrograde cholangiopancreatography; US: Ultrasonography.