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Multicenter study of the COPD-6 screening device: feasible for early detection of chronic obstructive pulmonary disease in primary care?

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Figure 1 COnsOrT diagram of enrolled subjects.Notes: The following diagnostic criteria were applied: 1) COPD: post-bronchodilator (BD) FeV1/FVC ,0.7 and ,0.5 l post-BD increase in FeV1, 2) asthma: post-BD FeVincrease 1$0.5 L, and 3) no obstructive lung disease, that is, not fulfilling any of these criteria.Abbreviations: COPD, chronic obstructive pulmonary disease; FeV, forced expiratory volume; FVC, forced vital capacity; MD, medical doctor’s.
Table 1 Baseline characteristics of all enrolled subjects (n=2,990) and classification according to whether participants were only screened with COPD-6 test (n=2,041) or proceeded to confir­mative spirometry (n=949)a
Figure 3 Comparison of the FeV1/FeV6 ratio for subjects with airway obstruction (defined as FEV1/FeV6 ,0.70) at the COPD-6 test (A) (n=510) with the FeV1/FVC ratio at the subsequent post-BD spirometry (B).Abbreviations: BD, bronchodilator; FeV, forced expiratory volume; FVC, forced vital capacity.
Table 3 Characteristics of subjects diagnosed with COPD compared to subjects diagnosed with asthma and no obstructive lung disease (no OlD)a,b
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