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Figure 1 Cumulative probability of death in patients with: 1) NT-proBNP  112 ng/l (n = 195); 2) NT-proBNP 113–400 ng/l (n = 193); 3) NT-proBNP 401–1,653 ng/l (n = 194); and 4) NT-proBNP  1,654 ng/l (n = 195). 1 vs. 2: log-rank p = 0.005; 2 vs. 3 and 3 vs. 4: log-rank p < 0.001. The curves are terminated when <10 patients remain at risk. NT-proBNP = N-terminal pro brain natriuretic peptide.
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