In model 2, after adjusting for model 1 plus diabetes mellitus, LVEF, anemia, trace urinary albumin and positive urinary albumin remained associated with increased risk of CIN non-recovery, the OR values were 2.88 (95% CI 1.14–7.11, P = 0.022) and 2.99 (95% CI 1.17–7.56, P = 0.021), respectively. This evidence concerns the gene ALB and anemia.