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Trends in worldwide asthma prevalence.
M Innes Asher1, Luis García-Marcos2, Neil E Pearce3
1Dept of Paediatrics: Child and Youth Health, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
The European Respiratory Journal
|September 25, 2020
Summary
Accurate global asthma prevalence data is scarce. This review analyzes past studies like ISAAC and ECRHS, highlighting the need for updated worldwide asthma trend information.
Area of Science:
- Epidemiology
- Public Health
- Respiratory Medicine
Background:
- Asthma prevalence measurement and analysis methods are crucial for understanding global trends.
- Existing population studies provide valuable insights but have limitations in scope and recency.
- Variability in Global Burden of Disease estimates necessitates reliable, updated data.
Purpose of the Study:
- To review methodologies for measuring and analyzing asthma prevalence in populations.
- To summarize key findings from major international asthma prevalence studies.
- To identify gaps in current worldwide asthma prevalence data and trends.
Main Methods:
- Review of four major population studies: ECRHS, EISL, ISAAC, and WHS.
- Analysis of standardized questionnaire-based methodologies and cross-sectional study designs.
- Examination of longitudinal data from EISL and ISAAC for trend analysis.
Main Results:
- Two studies (ISAAC, WHS) covered global regions using standardized questionnaires.
- Longitudinal data from EISL and ISAAC provide trend insights, but no new global data exists post-2003.
- Significant variations exist in Global Burden of Disease asthma prevalence estimates.
Conclusions:
- Current worldwide asthma prevalence data is outdated, with a significant gap since 2003.
- There is a critical need for recent, reliable global data on asthma prevalence and trends.
- The upcoming Global Asthma Network Phase I is expected to provide essential updated information.
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