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Respiratory symptoms questionnaire for asthma epidemiology: validity and reproducibility.
BACKGROUND: There is a need for a new respiratory symptoms questionnaire for use in epidemiological research in asthma. METHOD: A questionnaire was designed following a pilot study in 78 subjects. It contains nine questions on symptoms such as wheeze and difficulty with breathing in defined circumst...
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| Main Authors: | , , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado: |
1993
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| Assuntos: | |
| Acceso en liña: | https://ncbi.nlm.nih.gov/pmc/articles/PMC464356/ https://ncbi.nlm.nih.gov/pubmed/8497818 |
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