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Daily air pollution levels and acute asthma in southern Sweden.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Public Health Sciences.
National Institute for Working Life, Umeå, Sweden.
Landskrona Hospital, Landskrona, Sweden.
Umeå University, Faculty of Social Sciences, Umeå School of Business.
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1998 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 12, no 4, 900-905 p.Article in journal (Refereed) Published
Abstract [en]

This study aimed to investigate the association between daily air pollution levels and the occurrence of acute respiratory signs and symptoms among people with asthma or asthma-like problems.

Thirty eight subjects in the southern Swedish city of Landskrona kept a daily diary for 10 weeks. The daily prevalence of symptoms, supplementary bronchodilator use and peak flow deviations were compared with measurements of environmental nitrogen dioxide (NO2), sulphur dioxide, temperature and humidity in the city.

The occurrence of severe asthma, both during the day and during the evening, was significantly positively associated with the concurrent 24 h average concentration of NO2, which never exceeded 72 microg x m(-3). A correlation of borderline significance was found between the use of on-demand medication and the NO2 level. However, peak flow deviations were not associated with air pollution or weather conditions, which may be explained by the beneficial effect of bronchodilators used by 28 of the subjects.

The results of this study confirm those of some earlier studies and suggest that aggravation of asthma is related to daily variations in air quality, as indicated by relatively low ambient concentrations of nitrogen dioxide. These results also indicate that it may be appropriate to examine severe asthma symptoms separately.

Place, publisher, year, edition, pages
Copenhagen: Munksgaard , 1998. Vol. 12, no 4, 900-905 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:umu:diva-46782DOI: 10.1183/09031936.98.12040900PubMedID: 9817166OAI: diva2:440900
Available from: 2011-09-14 Created: 2011-09-14 Last updated: 2012-11-09Bibliographically approved
In thesis
1. Urban air quality and indicators of respiratory problems
Open this publication in new window or tab >>Urban air quality and indicators of respiratory problems
1997 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Umeå: Umeå University, 1997. 77 p.
Umeå University medical dissertations, ISSN 0346-6612 ; 552
air pollution, respiratory symptoms, asthma, annoyance reactions, environmental epidemiology
National Category
Environmental Health and Occupational Health
urn:nbn:se:umu:diva-7535 (URN)91-7191-361-0 (ISBN)
Available from: 2008-01-10 Created: 2008-01-10 Last updated: 2012-11-09Bibliographically approved

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