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Operational definitions of asthma in recent epidemiological studies are inconsistent
OBJECTIVE: The best combination of questions to define asthma in epidemiological asthma studies is not known. We summarized the operational definitions of asthma used in prevalence studies and empirically assess how asthma prevalence estimates vary depending on the definition used. METHODS: We searc...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4136946/ https://www.ncbi.nlm.nih.gov/pubmed/25136441 http://dx.doi.org/10.1186/2045-7022-4-24 |