All are related to the bile ducts dilated by ERCP. Multivariate logistic regression analysis of all these factors that age ages over 55 years, elevated direct bilirubin and direct bilirubin greater than 30% of total bilirubin were independent predictors of choledocholithiasis found by ERCP with estimated risks of 5.19 times, 4.98 times and 9.73 times respectively.
Todos estos factores fueron sometidos al análisis de regresión logística multivariado encontrándose que la edad > 55 años, la bilirrubina directa elevada y la relación de la bilirrubina directa mayor de 30% de la bilirrubina total, son predictores independientes de coledocolitiasis en la CPRE, estimando un riesgo de 5,19 veces, 4,98 veces y 9,73 veces respectivamente.