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Worldwide time trends in the prevalence of symptoms of asthma, allergic rhinoconjunctivitis, and eczema in childhood: ISAAC Phases One and Three repeat multicountry cross-sectional surveys

The LancetPublished 1 August 2006Open access
M. Innes Asher, Stephen Montefort, Bengt Björkstén, Christopher Lai, David P. Strachan, Stephan K. Weiland
Citations4,230
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TL;DR

The rise in prevalence of symptoms in many centres is concerning, but the absence of increases in prevalence in asthma symptoms for centres with existing high prevalence in the older age-group is reassuring.

Abstract

The rise in prevalence of symptoms in many centres is concerning, but the absence of increases in prevalence of asthma symptoms for centres with existing high prevalence in the older age-group is reassuring. The divergent trends in prevalence of symptoms of allergic diseases form the basis for further research into the causes of such disorders.

Keywords

Medicine