A randomised controlled trial to assess the effectiveness of offering study results as an incentive to increase response rates to postal questionnaires [ISRCTN26118436]
<p>Abstract</p> <p>Background</p> <p>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 f...
Na minha lista:
| Principais autores: | , |
|---|---|
| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
BMC
2005-10-01
|
| coleção: | BMC Medical Research Methodology |
| Acesso em linha: | http://www.biomedcentral.com/1471-2288/5/34 |
| Tags: |
Sem tags, seja o primeiro a adicionar uma tag!
|