GPT and diabetic kidney disease: The results showed that NHHR was nonlinearly correlated with the risk of developing DKD after adjusting for covariates such as age, sex, race, PIR, education level, smoke, alcohol use, physical activity, BMI, hypertension, CVD, lipid-lowering drugs, FBG, HbA1c, ALT, AST, Cr, UA, BUN, and TG (P for nonlinear = 0.003).