GPT and chronic kidney disease: Abbreviation: MetS: metabolic syndrome; M: median; Q: quartile; Q1: 1st quartile; Q3: 3rd quartile; FPG: fasting plasma glucose; HbA1c: glycated hemoglobin; BMI: body mass index; WC: waist circumference; CVD: cardiovascular disease, CKD: chronic kidney disease; TG: triglyceride; HDL-C: high-density lipoprotein cholesterol; LDL-C: low-density lipoprotein cholesterol; TC: Total Cholesterol; AST: aspartate transaminase; ALT: glutamic-pyruvic transaminase