GPT and type 2 diabetes mellitus: T2DM: type 2 diabetes mellitus; BMI: body mass index; WC: waist circumference; WHR: waist-to-hip ratio; WtHR: waist-to-height ratio; HDL: high-density lipoprotein; TCh: total cholesterol; SBP: systolic blood pressure; DBP: diastolic blood pressure; AST: aspartate aminotransferase; ALT: alanine aminotransferase; AP: alkaline phosphatase; GGT: gamma-glutamyl transferase; GPR: gamma-glutamyl transpeptidase to platelet ratio; APRI: AST to platelet ratio index; FIB-4: Fibrosis-4; AARPRI: aspartate aminotransferase to alanine aminotransferase ratio to platelet ratio index