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Figure 2 NT-proBNP Levels According to Population Subgroup and Cause of Death
Boxes show the 25th and 75th percentile with the mean shown. Whiskers represent 1.5 times the interquartile range. Ischemic cardiac death (ICD-9 code 410-414); cardiovascular death (ICD-9 code 410-414 or 420-438). NT-proBNP = N-terminal pro-B-type natriuretic peptide; other abbreviations as in Figure 1.
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