Increasing prevalence of asthma, allergic rhinoconjunctivitis and eczema among schoolchildren: three surveys during the period 1985–2008
Version of Record online: 1 NOV 2012
©2012 The Author(s)/Acta Pædiatrica ©2012 Foundation Acta Pædiatrica
Volume 102, Issue 1, pages 47–52, January 2013
How to Cite
Hansen, T. E., Evjenth, B. and Holt, J. (2013), Increasing prevalence of asthma, allergic rhinoconjunctivitis and eczema among schoolchildren: three surveys during the period 1985–2008. Acta Paediatrica, 102: 47–52. doi: 10.1111/apa.12030
- Issue online: 11 DEC 2012
- Version of Record online: 1 NOV 2012
- Accepted manuscript online: 20 SEP 2012 12:06PM EST
- Manuscript Accepted: 13 SEP 2012
- Manuscript Revised: 5 AUG 2012
- Manuscript Received: 6 JUN 2012
- Allergic rhinoconjunctivitis;
- Time trends
The prevalence of asthma, allergic rhinoconjunctivitis (AR) and eczema among children has increased worldwide in the last four decades, but recent studies disagree as to whether the prevalence is continuing to rise or is levelling off or declining. The aim of this study was to assess time trends in a subarctic population.
A cross-sectional, questionnaire-based survey was carried out in 2008 among children aged 7–14 years in randomly selected schools in Nordland County, Norway (n = 4150). The results are compared with results from identical studies in 1985 (n = 4870) and 1995 (n = 4456).
The main findings were an increasing prevalence of asthma ever (7.3% in 1985 to 17.6% in 2008, p for trend < 0.001) and AR ever (15.9% in 1985 to 24.5% in 2008, p for trend < 0.001), while the prevalence of eczema ever, after an increase between 1985 and 1995, remained unchanged in the last time period. The prevalence of current disease doubled and trebled between 1995 and 2008 for all three diseases.
A repeated cross-sectional survey between 1985 and 2008 documented an increasing prevalence of asthma ever and AR ever among schoolchildren (7–14 years), together with a considerably increase in current asthma, AR and eczema between 1995 and 2008.