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Including a pen and/or cover letter, containing social incentive text, had no effect on questionnaire response rate: a factorial randomised controlled Study within a Trial
Background: Postal questionnaires are frequently used in randomised controlled trials to collect outcome data on participants; however, poor response can introduce bias, affect generalisability and validity, and reduce statistical power. The objective of this study was to assess whether a pen and/or...
Autores principales: | James, Sophie, Parker, Adwoa, Cockayne, Sarah, Rodgers, Sara, Fairhurst, Caroline, Torgerson, David J., Rhodes, Sarah, Cotterill, Sarah |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
F1000 Research Limited
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8772525/ https://www.ncbi.nlm.nih.gov/pubmed/35106140 http://dx.doi.org/10.12688/f1000research.23767.2 |
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