Fig. 4

ROC curves for ALT/AST, compared to ALT, AST, GGT, and T.G. for NAFLD onset in various age groups: AGE < 20 years (A), AGE ≥ 20, < 40 years (B), AGE ≥ 40, < 60 years (C), and AGE ≥ 60 years (D). As determined by AUC, the predictive value for ALT/AST is more significant than other factors.