Cox proportional hazards regression model for overall survival.

IS: immunosuppression; MELD: model for end-stage liver disease; HBV: hepatitis B virus; HCV: hepatitis C virus; AFP: alpha-fetoprotein; HR, hazard ratio; CI, confidence interval; vs., versus.§n = 329;¶ 7 cases with missing data were excluded;★ 2 cases with missing data were excluded;※ 22 cases with missing data were excluded;♦ 9 cases with missing data were excluded.▲ Adjusted for transplant year in multivariate model.☯ 24 cases with missing data were excluded in multivariate model.Cox proportional hazards regression model for overall survival.