ALB and cancer: 2.091 + [1.739 x intrahepatic biliary obstruction on cross-sectional imaging (yes = 1, no = 0)] + [1.103 x stage IV cancer (yes = 1, no = 0)] + (-0.729 x pre-endoscopic serum albumin level) + [-0.569 x bilirubin improvement of more than 50% within 2 weeks after stenting (yes = 1, no = 0)] + [-2.183 x chemotherapy after ERCP (yes = 1, no = 0)], with “1” and “0” used for the presence and absence of each factor.