Prevalence, clinical characteristics and morbidity of the Asthma-COPD overlap in a general population sample

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Ekerljung, Linda,1979Gothenburg University,Göteborgs universitet,Krefting Research Centre,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition (author)

Prevalence, clinical characteristics and morbidity of the Asthma-COPD overlap in a general population sample

Article/chapterEnglish2018

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2017-09-29
Informa UK Limited,2018

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LIBRIS-ID:oai:gup.ub.gu.se/267795
https://gup.ub.gu.se/publication/267795URI
https://doi.org/10.1080/02770903.2017.1339799DOI

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Language:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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Objective: Although asthma and chronic obstructive pulmonary disease (COPD) have been regarded as distinct conditions, emerging literature suggests that overlapping phenotypes, called asthma-COPD overlap (ACO), exists. The aim of this study was to describe prevalence, patient characteristics and morbidity of ACO. Methods: From a cross-sectional population sample, the West Sweden Asthma Study, subjects with suspected asthma, chronic bronchitis or COPD, and a random sample, were invited to clinical examinations. ACO was defined as doctor-diagnosed asthma, or clear clinical signs of asthma at examination, with a FEV1/FVC < 0.7. Results: Subjects were categorized as ACO (N = 181), COPD only (N = 89), asthma only (N = 651) or healthy (n = 1036) based on clinical examinations. Prevalence of ACO was 3.4% in the random sample (N = 1172) and 18.1% among asthmatics (N = 138) in the random sample. Subjects with ACO (mean age 59 years, 54% women) had an age and gender distribution in between asthma only (45 years, 63% women) and COPD only (62 years, 41% women). Ever-smoking was reported by 71%, 48% and 74% in the ACO, asthma only and COPD only groups, respectively. Subjects with ACO had worse lung function (mean FEV1% of predicted normal 76%) than asthma only (100%) and COPD only (87%) and reported more respiratory symptoms. Also respiratory related emergency visits were more common in ACO compared to asthma only and COPD only, respectively. Conclusions: ACO is present in 3.4% of the population and common among subjects with both asthma and COPD. Subjects with ACO had worse lung function and more symptoms than subjects with asthma or COPD only.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Hälsovetenskap Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi hsv//swe
MEDICAL AND HEALTH SCIENCES Health Sciences Public Health, Global Health, Social Medicine and Epidemiology hsv//eng
Epidemiology
risk factors
smoking
lung function
obstructive pulmonary-disease
lung-disease
sweden
phenotypes
diagnosis
definition
spirometry
features
health
adults
Allergy
Respiratory System

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Mincheva, Roxana,1986Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Krefting Research Centre,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition(Swepub:gu)xmincr (author)
Hagstad, Stig,1978Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Krefting Research Centre,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition(Swepub:gu)xhagss (author)
Bjerg, Anders,1982Gothenburg University,Göteborgs universitet,Krefting Research Centre,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition(Swepub:gu)xbjerg (author)
Telg, G. (author)
Stratelis, G. (author)
Lötvall, Jan,1956Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Krefting Research Centre,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition(Swepub:gu)xlotja (author)
Göteborgs universitetKrefting Research Centre (creator_code:org_t)

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In:Journal of Asthma: Informa UK Limited55:5, s. 461-4690277-09031532-4303

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