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Published byΑναστάσιος Μεσσηνέζης Modified over 5 years ago
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Scatterplots showing baseline correlation between forced expiratory volume in 1 s (FEV1) % pred and a) COPD Assessment Test (CAT), b) Clinical COPD Questionnaire (CCQ) and c) Baseline Dyspnoea Index (BDI). Scatterplots showing baseline correlation between forced expiratory volume in 1 s (FEV1) % pred and a) COPD Assessment Test (CAT), b) Clinical COPD Questionnaire (CCQ) and c) Baseline Dyspnoea Index (BDI). Spearman's rank correlation coefficient (rs) values are indicated. COPD: chronic obstructive pulmonary disease. Konstantinos Kostikas et al. ERJ Open Res 2019;5: ©2019 by European Respiratory Society
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