Multiple logistic regression analysis (Table 2) was conducted with DR or DKD as the dependent variable, and sex, age, duration of diabetes, BMI, waist circumference, FPG, HbA1c, SBP, DBP, serum albumin, alanine transaminase, STB, triglycerides, HDL-c, LDL-c, white blood cell count, haemoglobin concentration, platelet count and smoking status as independent variables. This evidence concerns the gene GPT and diabetes mellitus.