CRP and choledocholithiasis: Identified risk factors for STC were the following: higher age (p < 0.001), male sex (p < 0.001), DM (p < 0.001), AC (p < 0.001), choledocholithiasis (p < 0.001), higher CRP (p < 0.001), higher number of pre-operative admissions (p < 0.001), pre-operative ERCP (p = 0.001) and pre-operative cholecystostomy (p < 0.001).