Selection criteria for preoperative endoscopic retrograde cholangiopancreatography before laparoscopic cholecystectomy and endoscopic treatment of bile duct stones: Results of a retrospective, single center study between 1996-2002

Table 5 Total predictive value of different positive predictive factors (PPF) for common bile duct stone

Factor	PPV %	NPV %	Sensitivity %	Specificity %
Hyperbilirubinaemia	73.3	73.6	54.3	86.6
Elevated ASAT/ALAT	65.4	91.9	91.3	67.2
Elevated GGT/ALP	60.3	97.1	97.5	56.3
Acute pancreatitis (AP)	72.0	73.5	22.2	96.2
AP in the anamnesis	20.0	57.2	4.9	86.5
Jaundice in the anamnesis	3.7	53.7	1.2	78.2
US: CBD ≥ 8 mm	73.1	70.9	46.9	88.2
US: bile duct stone	57.1	60.1	4.9	97.5