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Randomized controlled comparison of cross-sectional survey approaches to optimize follow-up completeness in clinical studies
INTRODUCTION: In outcome research, incomplete follow-up is a major, yet potentially correctable source of bias. Cross-sectional surveys may theoretically increase completeness of follow-up, but low response rates are reported typically. We investigated whether a pre-notification letter improved pati...
Autores principales: | von Allmen, Regula S., Tinner, Christian, Schmidli, Jürg, Tevaearai, Hendrik T., Dick, Florian |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6422260/ https://www.ncbi.nlm.nih.gov/pubmed/30883589 http://dx.doi.org/10.1371/journal.pone.0213822 |
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