GPT and diabetes mellitus: The adjustment factors included age, BMI, SBP, DBP, diabetes mellitus, stroke, CHD, antihypertensive drugs, lipoprotein-lowering drugs, glucose-lowering drugs, current smoking, current drinking, education, physical activity, Hcy, FBG, TC, LDL, eGFR, serum aspartate aminotransferase, serum alanine aminotransferase, serum γ-glutamyltransferase