Factors predicting adverse short-term outcomes in patients with acute cholangitis undergoing ERCP: A single center experience

Table 5 Multivariate analysis for mean length of stay

Variable	OR (95%CI)	P value
American Society of Anesthesiology physical classification (every 1 class)	1.34 (1.19-1.52)	< 0.001
Door to ERCP time
≤ 24 h (reference)	-	-
24-48 h	1.22 (0.97-1.54)	0.09
48-72 h	1.24 (0.92-1.66)	0.16
> 72 h	1.70 (1.36-2.12)	< 0.001
Pre-ERCP bilirubin (every 1 mg/dL)	1.02 (1.01-1.04)	0.02
Post-ERCP bleeding or pancreatitis	1.91 (1.12-3.24)	0.02
Charlson comorbidity index	1.01 (0.96-1.06)	0.74
Positive blood culture	1.18 (0.96-1.46)	0.12

Modeling of this outcome performed on the Log2 (length of stay), since this transformed variable had less skewness and much more symmetry in its distribution. ERCP: Endoscopic retrograde cholangiopancreatography.