Figure 3.Kaplan-Meier estimated postoperative 90-day cumulative mortality and adjusted hazard ratios according to the ALT, AST, and De Ritis ratio groups stratified by age. Asterisks indicate the statistical significance. *P<0.05, **P<0.001. ALT: alanine aminotransferase; AST: aspartate aminotransferase; HR: hazard ratio; CI: confidence interval.
