ALB and anemia: The results showed that the independent variables for complications, cholangitis, and pancreatitis decreased from 27 to 3 (removal drainage, GGT, amylase), 7 (pre-perforation, pre-cholangitis, type 4A, removal drainage, anemia, albumin, amylase), and 4 (pre-perforation, pre-cholangitis, GGT, amylase), respectively (Figure 2).