GSTM1 and diabetes mellitus: Subsequently, all significant variables (p < 0.05) from the univariate analysis—including age, presence of DM, Hb, AST, total bilirubin, albumin, glucose, BUN, creatinine, sodium, potassium, corrected calcium, phosphate, TIBC, ferritin, hs-CRP, total cholesterol, HDL, and the FIB-4 score—were included in the multivariate Cox regression analysis to adjust for the predictors of all-cause 5-year mortality.