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

Figure 3. Bland-Altman plots for changes in NT-proBNP serum levels in hypertensive patients without hypertrophy.

Figure 3

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.