Factors | Variables | Assignment |
---|---|---|
Biliary fistula | Y | Yes = 1, no = 2 |
Age (y) | X1 |  ≥ 65 = 1, < 65 = 2 |
Preoperative cholangitis | X2 | Yes = 1, no = 2 |
Number of biliary anastomosis | X3 |  ≥ 2 = 1, < 21 = 2 |
GGT (U/L) on the first day after surgery | X4 |  ≥ 120 = 1, < 120 = 2 |
Preoperative bile culture for Klebsiella pneumoniae | X5 | Yes = 1, no = 2 |