CRP and diabetes mellitus: ROC curves were generated using the conventional risk factors for CACS (age, sex, smoking, presence of diabetes mellitus, duration of dialysis, serum Ca, phosphate, CRP, and ERI) +TSAT, the conventional risk factors for CACS + Fe, or the conventional risk factors for CACS + ferritin, for the prediction of CACS ≥400 (n = 173) (Supplementary Figure 1).