Likelihood ratio of mortality and morbidity and receiver operating characteristic curve according to ALT reference variables: (A,B) Cox proportional hazard regression models for likelihood ratio (LR) for liver outcomes according to two different alanine aminotransferase (ALT) cut-off values. All adjusted for age, BMI, smoking, exercise, alcohol consumption, fasting blood glucose, and cholesterol. LR, likelihood-ratio statistic: ΔG2 = −2 log L from reduced model(−2 log L from current model). Reduced model is the control model. Current model is the cut-off model; (C,D) Optimal cut-off values of alanine aminotransferase for adverse liver outcomes.