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Less healthy, but more active: Opposing selection biases when recruiting older people to a physical activity study through primary care
BACKGROUND: Physical activity studies in older people experience poor recruitment. We wished to assess the influence of activity levels and health status on recruitment to a physical activity study in older people. METHODS: Comparison of participants and non-participants to a physical activity study...
| Autores principales: | , , , , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
BioMed Central
2008
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2426698/ https://www.ncbi.nlm.nih.gov/pubmed/18505574 http://dx.doi.org/10.1186/1471-2458-8-182 |