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Total and component scores of SGRQ-c according to COPD clinical phenotypes.
Abbreviations: ACOS, asthma-COPD overlap syndrome phenotype; AE CB, exacerbator with chronic bronchitis phenotype; AE NON-CB, exacerbator with emphysema phenotype; NON-AE, non-exacerbator phenotype; SGRQ-c, St Georges Respiratory Questionnaire for COPD.
