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Kaplan–Meier survival analysis. The event‐free survival for MACE in elderly patients with CHF, stratified according to the cut‐off values of RBP4 and NT‐proBNP. CHF, chronic heart failure; MACE, major adverse cardiac event(s); NT‐proBNP, N terminal pro brain natriuretic peptide; RBP4, retinol‐binding protein 4.
