GPT and metabolic syndrome: When the cut-off levels for increased ALT in this study were determined by ROC analysis (≥19 U/L in men and ≥13 U/L in women) from Table S3, increased ALT levels were associated with 51% increased risk of incident MetS in Model 1 (HR: 1.51 (1.27-1.79)) and 28% increased risk in Model 2 (HR: 1.28 (1.08-1.53)).