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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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Bibliografski detalji
Izdano u:BMC Med Res Methodol
Glavni autori: Ouyang, Yongdong, Karim, Mohammad Ehsanul, Gustafson, Paul, Field, Thalia S., Wong, Hubert
Format: Artigo
Jezik:Inglês
Izdano: BioMed Central 2020
Teme:
Online pristup: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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