NPPB and coronary artery disorder: In the multivariate Cox proportional hazards analysis, the low DBP group was an independent predictor of HF readmission after adjustment for age, sex, SBP, hemoglobin, serum albumin, serum creatinine, BNP, RASi, CCB, LVEF, CAD, and whether they live alone (hazard ratio 2.229; 95% confidence interval 1.021–4.867; p = 0.044) (Table 3).