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Air pollution levels, meteorological conditions and asthma symptoms
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Epidemiologi och folkhälsovetenskap.
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1993 (Engelska)Ingår i: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 6, nr 8, s. 1109-1115Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We wanted to assess relations between the daily occurrence of asthma symptoms and fluctuations of air pollution concentrations and meteorological conditions. In a panel of 31 asthmatic patients residing in the town of Piteå in northern Sweden, severe symptoms of shortness of breath, wheeze, cough and phlegm were recorded in an asthma diary together with suspected causes. Sulphur dioxide, nitrogen dioxide, black smoke, relative humidity and temperature were used to evaluate the relationship to the environment. By using multivariate analyses, we found that daily variations in the particulate pollution levels, indicated by black smoke levels below the criteria limits, had significant effects on the risk of developing severe symptoms of shortness of breath. This association was stronger among 10 subjects, who had at least five incident days with severe shortness of breath. Meteorological conditions were not significant in the multivariate models. Cough and phlegm did not show significant relationships to any environmental condition that was evaluated. Only one-third of the subjects reported, at least once during the study, symptoms believed to be related to air pollutants, although we found significant correlations between the pollution levels and the frequency of pollution-related symptoms. We conclude that an association has been established for black smoke as pollutant and shortness of breath as respiratory symptom, and that in certain asthmatics, effects were occurring at lower particulate levels than suggested previously.

Ort, förlag, år, upplaga, sidor
1993. Vol. 6, nr 8, s. 1109-1115
Nationell ämneskategori
Arbetsmedicin och miljömedicin
Identifikatorer
URN: urn:nbn:se:umu:diva-61316PubMedID: 8224125OAI: oai:DiVA.org:umu-61316DiVA, id: diva2:566718
Tillgänglig från: 2012-11-09 Skapad: 2012-11-09 Senast uppdaterad: 2018-06-08Bibliografiskt granskad
Ingår i avhandling
1. Urban air quality and indicators of respiratory problems
Öppna denna publikation i ny flik eller fönster >>Urban air quality and indicators of respiratory problems
1997 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Ort, förlag, år, upplaga, sidor
Umeå: Umeå University, 1997. s. 77
Serie
Umeå University medical dissertations, ISSN 0346-6612 ; 552
Nyckelord
air pollution, respiratory symptoms, asthma, annoyance reactions, environmental epidemiology
Nationell ämneskategori
Arbetsmedicin och miljömedicin
Identifikatorer
urn:nbn:se:umu:diva-7535 (URN)91-7191-361-0 (ISBN)
Handledare
Tillgänglig från: 2008-01-10 Skapad: 2008-01-10 Senast uppdaterad: 2018-06-09Bibliografiskt granskad

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Forsberg, BertilWall, Stig

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