Predicting cholecystocholedochal fistulas in patients with Mirizzi syndrome undergoing endoscopic retrograde cholangiopancreatography

Table 3 Predictors of cholecystocholedochal fistulas in patients with Mirizzi syndrome

	Univariate OR	P value	95%CI for OR	Multivariate OR	P value	95%CI for OR
Variate
Stricture length > 2 cm	0.14	0.01	0.03-0.64	0.12	0.008	0.03-0.58
CBD stones retrieved	0.26	0.08	0.06-1.17
Pus in the CBD	4.91	0.002	1.77-13.59	5.82	0.002	1.93-17.58
Duodenal ulcer	1.62	0.38	0.56-4.73

CBD: Common bile duct; CI: Confidence interval; OR: Odds ratio.