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Retaining young people in a longitudinal sexual health survey: a trial of strategies to maintain participation
<p>Abstract</p> <p>Background</p> <p>There is an increasing trend towards lower participation in questionnaire surveys. This reduces representativeness, increases costs and introduces particular challenges to longitudinal surveys, as researchers have to use complex stat...
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Main Authors: | , , , |
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Formato: | Artigo |
Idioma: | Inglês |
Publicado em: |
BMC
2010-01-01
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Colecção: | BMC Medical Research Methodology |
Acesso em linha: | http://www.biomedcentral.com/1471-2288/10/9 |
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