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Fig. 1 | BMC Pulmonary Medicine

Fig. 1

From: Effectiveness of adding a peak flow meter for the identification of patients with chronic obstructive pulmonary disease in real-world clinical practice

Fig. 1

Flowchart for the extraction of unrecognized COPD and smoker-without-COPD (non-COPD smoker) cases from suspected COPD (sCOPD) cases who visited the hospital for non-respiratory treatment, and the sorting of sCOPD cases (within the square with broken lines). Gray arrows indicate COPD and non-COPD identification using the spirometry test. Closed arrows indicate discrimination using the reference value

Abbreviations: COPD, chronic obstructive pulmonary disease; PEF, peak expiratory flow

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BMC Pulmonary Medicine

ISSN: 1471-2466

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