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The upper figure is the Kaplan–Meier curves for event-free survival within 2 years according to N-terminal pro brain natriuretic peptde (NT-proBNP) (log rank χ2 =5.16, P =0.023). The lower figure is the Kaplan–Meier curves for event-free survival within 2 years according to NT-proBNP combined with Rho kinase (ROCK) activity (log rank χ2 =11.62, P =0.009).
