GPT and diabetes mellitus: In multivariate analysis, serum ALT levels of nondrinkers were independently associated with age, sex, body mass index (BMI), hypertension, diabetes mellitus, diastolic blood pressure, triglyceride, low-density lipoprotein-cholesterol (LDL-c), and AIx, while serum ALT levels of drinkers were independently associated with age, sex, BMI, triglyceride, and LDL-c (p < 0.05 for all).