Precision and accuracy of FEV1 measurements from the Vitalograph copd-6 mini-spirometer in a healthy Ugandan population.

PLoS One · 2021 · PMC8238209 · PMID 34181689

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In two of the latter studies, Bland-Altman plots indicated that the copd-6 underestimates FEV 1 more when the FEV 1 is high [ 12 , 18 ], while one study did not show a clear trend in FEV 1 bias for the copd-6 [ 16 ].

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