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An imbalance in cluster sizes does not lead to notable loss of power in cross-sectional, stepped-wedge cluster randomised trials with a continuous outcome

BACKGROUND: The current methodology for sample size calculations for stepped-wedge cluster randomised trials (SW-CRTs) is based on the assumption of equal cluster sizes. However, as is often the case in cluster randomised trials (CRTs), the clusters in SW-CRTs are likely to vary in size, which in ot...

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Dettagli Bibliografici
Pubblicato in:Trials
Autori principali: Kristunas, Caroline A., Smith, Karen L., Gray, Laura J.
Natura: Artigo
Lingua:Inglês
Pubblicazione: BioMed Central 2017
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Accesso online:https://ncbi.nlm.nih.gov/pmc/articles/PMC5341460/
https://ncbi.nlm.nih.gov/pubmed/28270224
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/s13063-017-1832-8
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