Increase of asthma, allergic rhinitis and eczema in Swedish schoolchildren between 1979 and 1991

Clinical and Experimental Allergy - Tập 25 Số 9 - Trang 815-819 - 1995
Nils Åberg1, Bill Hesselmar2, Birgitta Åberg3, Birgitta Eriksson4
1Department of Paediatrics, University of Göteborg, Sweden
2Mölndal County Hospital
3Department of Paediatrics, University of Göteborg
4The Nordic School of Public Health, Göteborg, Sweden

Tóm tắt

SummaryBackground: A previous study has shown a twofold increase in prevalence of asthma and allergic rhinitis (AR) in Swedish recruits during the 1970s. The increase was higher in more northerly colder regions. Objectives To follow up the previously found trend to increasing prevalences with time as well as the climatic variations within the country.Methods: The prevalences of asthma, allergic rhinitis and eczema were assessed using two questionnaire studies, 12 years apart (1979 and 1991) with identical questions about the diseases. The study comprised representative samples of children from the Göteborg area on the south‐western coast (in 1979: 7‐year‐olds, n= 4255, in 1991: 7‐year‐olds, n= 1649) and in Kiruna, a mining town in the northernmost inland mountains (in 1979: 7‐year‐olds, n= 427, in 1991: 7‐9‐year‐olds, n= 832). In 1991 there was also a personal interview and a skin‐prick test (SPT) on subsamples.Results: The prevalence of all these diseases present over the last year had roughly doubled over the 12‐year period. On both occasions, most symptoms were more prevalent in the northern area. In 1991, the prevalence of one or more symptoms in Goteborg was 23.8% and 32.5% and in Kiruna 29.9% and 44.8% in the questionnaire and the interview, respectively.Conclusion: Asthma, AR and eczema increase continuously in prevalence in Sweden and the climatic distribution of the prevalences suggests possible major risk factors to be found in a closed indoor climate.

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Clinical and Experimental Allergy

Tập 25 Số 9

815-819

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