Association of albumin-bilirubin grade with short- and long-term mortality in patients with heart failure: a cohort study using restricted cubic splines and propensity score matching

RCS analyses revealed a nonlinear relationship between ALBI grade and 30-, 90-, and 360-day mortality in patients with HF, with a threshold value identified at -1.92. When ALBI scores were below - 1.92, the risk of mortality in HF patients remained relatively stable. In contrast, as ALBI scores approached and exceeded - 1.92, the mortality risk increased rapidly. Before PSM, both ALBI grades 2 and 3 were independent predictors of mortality in patients with HF; however, after PSM, ALBI grade 2 was not statistically associated with patient mortality. This result was supported by Kaplan-Meier (K-M) analysis.