Fig. 1. The correlation between the DR grade and laboratory exams. There was a significant positive correlation between the DR grade and HbA1C, FPG, UACR and urine microalbumin level. Of the relevant factors, Spearman's rho was the largest in HbA1C.
DR = diabetic retinopathy, HbA1C = glycated hemoglobin, FPG = fasting plasma glucose, UACR = urine albumin to creatinine ratio, eGFR = estimated glomerular filtration rate, HDL = high-density lipoprotein, LDL = low-density lipoprotein, BMI = body mass index.