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The use of incentives in vulnerable populations for a telephone survey: a randomized controlled trial
BACKGROUND: Poor response rates in prevalence surveys can lead to nonresponse bias thereby compromising the validity of prevalence estimates. We conducted a telephone survey of randomly selected households to estimate the prevalence of food allergy in the 10 Canadian provinces between May 2008 and M...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3503563/ https://www.ncbi.nlm.nih.gov/pubmed/23083313 http://dx.doi.org/10.1186/1756-0500-5-572 |