ALB and coronary artery disorder: Spearman correlation analysis between ARC value and all demographic, clinical characters were further performed in without diabetes group (supplemental Table 2); and 4 potential confounders were found as follows, comorbid CHD (R = 0.481, P = 0.027), Ca (mmol/L)(R = 0.534, P = 0.013), Alb(g/L)(R = -0.539, P = 0.012), dalyzer membrane (polysulfone)(R = -0.458, P = 0.037).