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. 2015 Jul 27;10:1443–1454. doi: 10.2147/COPD.S85363

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© 2015 Nielsen et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Prevalence of comorbidities among patients classified as ACOS, COPD only, and asthma only.

Notes: x, proportion having a comorbid condition; y, having two comorbid conditions; Pa, patient study, where comorbidities were inferred by recording concomitant drug prescriptions for other diseases (arterial hypertension, chronic heart disease, diabetes, gastroesophageal and osteoporosis); Po, population study with self-reported comorbidities; a, age adjusted (≥18 years). #Data from the comorbid condition; stroke is chosen to give a representative impression of tendency in the study, in the lack of data about all comorbidities together. ^{^}Asthma group only includes patients with current asthma. *P<0.02, **P<0.633, ***P<0.05.

Abbreviations: ACOS, asthma-chronic obstructive pulmonary disease overlap syndrome; COPD, chronic obstructive pulmonary disease.