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Explaining the variation in the attained power of a stepped-wedge trial with unequal cluster sizes
BACKGROUND: In a cross-sectional stepped-wedge trial with unequal cluster sizes, attained power in the trial depends on the realized allocation of the clusters. This attained power may differ from the expected power calculated using standard formulae by averaging the attained powers over all allocat...
| Autores principales: | , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
BioMed Central
2020
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7315519/ https://www.ncbi.nlm.nih.gov/pubmed/32580698 http://dx.doi.org/10.1186/s12874-020-01036-5 |