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. 2017 Apr 13;12:1173–1181. doi: 10.2147/COPD.S128234

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© 2017 Ramon et al. This work is published and licensed by Dove Medical Press Limited

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Self-reported daily walking times according to (A) mMRC, (B) FEV₁% predicted, (C) COPD admissions in the previous 12 months, (D) CAT, (E) GOLD A–D groups, (F) BODEx index, and (G) Charlson index of comorbidities. Data are presented as mean values with 95% confidence intervals.

Abbreviations: BODEx, body mass index, airway obstruction, dyspnea, exacerbation; CAT, COPD assessment test; COPD, chronic obstructive pulmonary disease; FEV₁, forced expiratory volume in the first second; GOLD, Global Initiative for Chronic Obstructive Lung Disease; mMRC, modified Medical Research Council dyspnea scale.