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. 2017 Nov 16;1(1):e000173. doi: 10.1136/bmjpo-2017-000173

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Bland-Altman plots assessing pairwise agreement for respiratory measurements by A. RR 1 and RR 2 B. RR 1 and RR 3 C. RR 2 and RR 3. The x-axis represents the mean values of the two measurements and the y-axis the difference between the two. The solid line shows the mean bias and the dashed lines the 95% CI based on the standard deviation of the distribution.