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Dissociation of dysfunctional breathing and odour intolerance among adults in a general-population study.

Artikel i vetenskaplig tidskrift
Författare Ellen Bonde
Eva Andersson
Jonas Brisman
Mats Eklöf
Karin C. Ringsberg
Kjell Torén
Publicerad i The clinical respiratory journal
Volym 7
Nummer/häfte 2
Sidor 176–182
ISSN 1752-699X
Publiceringsår 2013
Publicerad vid Institutionen för medicin, avdelningen för samhällsmedicin och folkhälsa
Psykologiska institutionen
Sidor 176–182
Språk en
Länkar dx.doi.org/10.1111/j.1752-699X.2012...
Ämnesord dysfunktionell andning, doftkänslighet, allmänbefolkning, asthma, dysfunctional breathing, epidemiology, general population
Ämneskategorier Lungmedicin och allergi, Miljömedicin och yrkesmedicin

Sammanfattning

Background:  Many patients present with a mixture of respiratory problems such as shortness of breath, heavy breathing, coughing and odour intolerance. If these patients are diagnosed as asthma, it might sometimes be a false diagnosis. Concepts such as sensory hyperreactivity, hyperventilation, asthma-like symptoms, odour intolerance and dysfunctional breathing are used to refer to these patients. Non-respiratory symptoms such as headache, fatigue and bloating are sometimes also part of the clinical picture. Our aim was to use factor analysis to increase our understanding of breathing-related symptoms in a general-population frame. Methods:  A respiratory questionnaire was answered by 10 108 subjects in a general-population sample. Items aiming to identify individuals with breathing-related symptoms and asthma were included. We used factor analysis with Varimax rotation to extract discriminatory components (i.e. groups of symptoms), based on the questionnaire items. The aim was to find groups of items (factors) as distinct as possible, still allowing overlap and showing the importance of each item in the separated factor. Results:  Five distinct factors were identified in the factor analysis, representing dysfunctional breathing, odour intolerance, asthma, bronchitis and a group with mixed symptoms, respectively. These five factors explained 55% of the variance. Conclusions:  Based on our findings, we conclude that non-asthmatic breathing-related symptoms may be separated into at least two categories in a general population, odour intolerance and dysfunctional breathing. These two categories seem to be two distinct groups of subjects with breathing-related symptoms and may represent different clinical entities separated from asthma and bronchitis. Please cite this paper as: Bonde E, Andersson E, Brisman J, Eklöf M, Ringsberg KC and Torén K. Dissociation of dysfunctional breathing and odour intolerance among adults in a general-population study. Clin Respir J 2012; DOI: 10.1111/j.1752-699X.2012.00299.x.

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