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Efficient design of cluster randomized trials with treatment‐dependent costs and treatment‐dependent unknown variances
Cluster randomized trials evaluate the effect of a treatment on persons nested within clusters, where treatment is randomly assigned to clusters. Current equations for the optimal sample size at the cluster and person level assume that the outcome variances and/or the study costs are known and homog...
| Autores principales: | , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
John Wiley and Sons Inc.
2018
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6120518/ https://www.ncbi.nlm.nih.gov/pubmed/29888393 http://dx.doi.org/10.1002/sim.7824 |