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. 2015 Jun 25;10:1213–1218. doi: 10.2147/COPD.S85166

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© 2015 Pothirat et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

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Bland–Altman plot highlighting magnitude of difference between % predicted FEV₁ and PEFR.

Note: Horizontal dashed lines represent the mean bias and its 95% confidence limits. Abbreviations: FEV₁, forced expiratory volume in 1 second; PEFR, peak expiratory flow rate.