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Fig. 3 | BMC Family Practice

Fig. 3

From: Diagnostic accuracy of a pocket screening spirometer in diagnosing chronic obstructive pulmonary disease in general practice: a cross sectional validation study using tertiary care as a reference

Fig. 3

Bland-Altman plots for between methods and points of care comparisons for lung function parameters. Bland-Altman plots are presented as plots of difference between two measurements [y-axis] plotted against the mean of two measurements [x-axis]; graphs at columns represents parameters measured using COPD-6™ at the GP’s office: first column – FEV1, second column – FEV6, third column – FEV1/FEV6; rows represent mean of two measurements: first row – COPD-6™ at tertiary care, second row – spirometry (S), third row – postbronhodilator (PB) spirometry

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BMC Primary Care

ISSN: 2731-4553

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