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The impact of varying cluster size in cross-sectional stepped-wedge cluster randomised trials

BACKGROUND: Cluster randomised trials with unequal sized clusters often have lower precision than with clusters of equal size. To allow for this, sample sizes are inflated by a modified version of the design effect for clustering. These inflation factors are valid under the assumption that randomisa...

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Detalhes bibliográficos
Publicado no:BMC Med Res Methodol
Main Authors: Martin, James Thomas, Hemming, Karla, Girling, Alan
Formato: Artigo
Idioma:Inglês
Publicado em: BioMed Central 2019
Assuntos:
Acesso em linha:https://ncbi.nlm.nih.gov/pmc/articles/PMC6570871/
https://ncbi.nlm.nih.gov/pubmed/31200640
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/s12874-019-0760-6
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