Sample size calculations for cluster randomised controlled trials with a fixed number of clusters

ABSTRACT: BACKGROUND: Cluster randomised controlled trials (CRCTs) are frequently used in health service evaluation. Assuming an average cluster size, required sample sizes are readily computed for both binary and continuous outcomes, by estimating a design effect or inflation factor. However, where...

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Главные авторы: Hemming, Karla, Girling, Alan J, Sitch, Alice J, Marsh, Jennifer, Lilford, Richard J
Формат: Artigo
Язык:Inglês
Опубликовано: BioMed Central 2011
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Commentary
Online-ссылка:https://ncbi.nlm.nih.gov/pmc/articles/PMC3149598/
https://ncbi.nlm.nih.gov/pubmed/21718530
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/1471-2288-11-102
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