Fig. 2

The Cox regression analysis of 90-day mortality for AHF patients in different groups before and after PSM (a) The Cox regression analysis of 90-day mortality for AHF patients with different BMI subgroups in High-SA group before PSM (b) The Cox regression analysis of 90-day mortality for AHF patients with different BMI subgroups in Low-SA group before PSM (c) The Cox regression analysis of 90-day mortality for AHF patients with different BMI subgroups in High-SA group after PSM (d) The Cox regression analysis of 90-day mortality for AHF patients with different BMI subgroups in Low-SA group after PSM. AHF, acute heart failure; BMI, body mass index; SA, serum albumin; HR, heart rate; WBC, white blood cell count; HB, Hemoglobin; NT-proBNP, N-terminal probrain natriuretic peptide; SOFA, sequential organ failure assessment; CRRT, continuous renal replacement therapy; PSM, propensity-score matching; HR, Hazard ratio; CI, Confidence interval