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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...

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Dades bibliogràfiques
Publicat a:BMC Med Res Methodol
Autors principals: Ouyang, Yongdong, Karim, Mohammad Ehsanul, Gustafson, Paul, Field, Thalia S., Wong, Hubert
Format: Artigo
Idioma:Inglês
Publicat: BioMed Central 2020
Matèries:
Accés en línia:https://ncbi.nlm.nih.gov/pmc/articles/PMC7315519/
https://ncbi.nlm.nih.gov/pubmed/32580698
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/s12874-020-01036-5
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