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Hazard ratios for heart failure (HF) events based on combinations of MMP‐9 and BNP levels. Low MMP‐9, ≤23.2 ng/mL; high MMP‐9, >23.2 ng/mL; low BNP, ≤210 pg/mL; high BNP, >210 pg/mL. BNP, brain natriuretic peptide; CI, confidence interval; MMP, matrix metalloproteinase; Ref, reference.
