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Improving participation rates by providing choice of participation mode: two randomized controlled trials
BACKGROUND: Low participation rates reduce effective sample size, statistical power and can increase risk for selection bias. Previous research suggests that offering choice of participation mode can improve participation rates. However, few head-to-head trials compared choice of participation mode...
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| Veröffentlicht in: | BMC Med Res Methodol |
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| Hauptverfasser: | , , |
| Format: | Artigo |
| Sprache: | Inglês |
| Veröffentlicht: |
BioMed Central
2015
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| Schlagworte: | |
| Online Zugang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4392857/ https://ncbi.nlm.nih.gov/pubmed/25886757 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/s12874-015-0021-2 |
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