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. 2021 Aug 7;10(16):e020480. doi: 10.1161/JAHA.120.020480

Figure 2. Kaplan–Meier analyses of FEUN at discharge for post‐discharge all‐cause mortality and readmission for worsening HF.

Figure 2

Kaplan‐Meier survival curves show time to all‐cause death (A) and HF readmission (B) in the FEUN<35% and FEUN equal to or greater than 35% groups. The log‐rank test demonstrated that the FEUN<35% group had a significantly higher rate of all‐cause death compared to the FEUN equal to or greater than 35% group (log‐rank test, P<0.001), with a HR, 1.747; 95% CI, 1.288–2.369. Furthermore, the FEUN<35% group had a strong trend toward a higher risk of HF readmission (log‐rank test, P=0.073), with a HR, 1.383; 95% CI, 0.967–1.977. FEUN indicates fractional excretion of urea nitrogen; and HF, heart failure.