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Choosing the target difference (‘effect size’) for a randomised controlled trial - DELTA(2) guidance protocol
BACKGROUND: A key step in the design of a randomised controlled trial (RCT) is the estimation of the number of participants needed. By far the most common approach is to specify a target difference and then estimate the corresponding sample size; this sample size is chosen to provide reassurance tha...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469157/ https://www.ncbi.nlm.nih.gov/pubmed/28606102 http://dx.doi.org/10.1186/s13063-017-1969-5 |