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The prevalence of chronic airflow obstruction in three cities in the Nordic-Baltic region
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Lung- allergy- and sleep research.
Tartu Univ Hosp, Lung Clin, Tartu, Estonia.
Landspitali Univ Hosp, Dept Sleep, Reykjavik, Iceland;Univ Iceland, Fac Med, Reykjavik, Iceland.
Univ Iceland, Fac Med, Reykjavik, Iceland.
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2018 (English)In: Respiratory Medicine, ISSN 0954-6111, E-ISSN 1532-3064, Vol. 143, p. 8-13Article in journal (Refereed) Published
Abstract [en]

Back ground: Chronic airflow obstruction (CAO) is the primary characteristic of Chronic obstructive pulmonary disease (COPD) but is also seen in chronic asthma. Objective: To compare the prevalence of CAO and possible risk factors between Tartu in Estonia, Reykjavik in Iceland and Uppsala in Sweden. Methods: All participants underwent spirometry testing of forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC) before and after bronchodilation. CAO was defined as post-bronchodilator FEV1/FVC below lower limit of normal. Information on respiratory diseases and smoking status, was obtained through questionnaires administered by trained interviewers. Results: 1037 men and 956 women participated in the study. The prevalence of CAO was lower in women in Tartu compared to the other centres (4.9% vs. 13.4 and 8.7% in Reykjavik and Uppsala, respectively, p = 0.002) while no difference was found for men. A similar picture was seen for the proportion of participants that had smoked 10 pack years or more which was much lower in Tartu for women than in Reykjavik and Uppsala, respectively (13.2% vs. 33.7 and 29.2%, p < 0.001). (Fig. 1). Of the participants with CAO the majority (57-67%) did not have a previous diagnosis of asthma or COPD. Conclusion: The prevalence of CAO was lower in Estonian women than in women from Iceland and Sweden. The reason for this was probably that the Estonian women had smoked less than the female participants from Iceland and Sweden. The majority of those with CAO do not have a diagnosed lung disease.

Place, publisher, year, edition, pages
Saunders Elsevier, 2018. Vol. 143, p. 8-13
Keywords [en]
Chronic airflow obstruction, COPD, Asthma, Smoking, Gender difference
National Category
Respiratory Medicine and Allergy
Identifiers
URN: urn:nbn:se:uu:diva-363418DOI: 10.1016/j.rmed.2018.08.007ISI: 000445399500002PubMedID: 30261997OAI: oai:DiVA.org:uu-363418DiVA, id: diva2:1256992
Funder
AstraZenecaSwedish Heart Lung FoundationAvailable from: 2018-10-18 Created: 2018-10-18 Last updated: 2019-01-30Bibliographically approved

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Broström, ErikaJanson, Christer

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