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Kaplan–Meier survival curves according to discharge BNP and growth differentiation factor 15 (GDF‐15): reference category: both biomarkers < mean; other categories—only one of the biomarkers ≥ mean and both biomarkers ≥ mean. Patients with both BNP and GDF‐15 < mean had a clear survival benefit while those with both biomarkers ≥ mean had higher 2‐year mortality.
