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. 2012 Feb 23;7(2):e31189. doi: 10.1371/journal.pone.0031189

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Roselló-Lletí et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Bland-Altman plot showing agreement between the logarithm of NT-proBNP levels percentage change against the average of the logarithm of NT-proBNP levels in basal + stage I (A), stage I + stage II (B) and basal + stage II (C). The solid line represents the mean of the percentage change. The dashed lines define the limits of agreement (standard deviation of percentage of change ×1.96 SD). NT-proBNP, N-terminal pro-brain natriuretic peptide levels; SD, standard deviation; stage I, 12-month follow-up; stage II, 24-month follow-up.