The role of donor, preoperative, intraoperative, and postoperative factors in predicting patient survival after liver transplantation was evaluated by the Bio Medicus data package on a database containing 162 variables filled with records from 100 consecutive first-liver transplant cases. Donor data did not predict outcome. Recipient preoperative data (Child status, HCV status) were predictive using life table and Cox regression methods. Recipient intraoperative data (by-pass time, warm ischemia time, delay in arterial revascularization, and packed red blood cell requirements) were predictive of outcome using life table analysis. Recipient post-operative data (rejection, sepsis, primary dysfunction, and hepatic artery thrombosis) were predictive of outcome.