A randomised controlled trial to assess the effectiveness of offering study results as an incentive to increase response rates to postal questionnaires [ISRCTN26118436]

BACKGROUND: Postal questionnaires are widely used to collect outcome data on participants. However, a poor response to questionnaires will reduce the statistical power of the study and may introduce bias. A meta analysis of ten trials offering study results, largely in the fields of education and ma...

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Detalles Bibliográficos
Autores principales: Cockayne, Sarah, Torgerson, David J
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2005
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1280926/
https://www.ncbi.nlm.nih.gov/pubmed/16250910
http://dx.doi.org/10.1186/1471-2288-5-34

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1280926/
https://www.ncbi.nlm.nih.gov/pubmed/16250910
http://dx.doi.org/10.1186/1471-2288-5-34

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