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A priori postulated and real power in cluster randomized trials: mind the gap
BACKGROUND: Cluster randomization design is increasingly used for the evaluation of health-care, screening or educational interventions. The intraclass correlation coefficient (ICC) defines the clustering effect and be specified during planning. The aim of this work is to study the influence of the...
| Autores principales: | , , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
BioMed Central
2005
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1190183/ https://www.ncbi.nlm.nih.gov/pubmed/16109162 http://dx.doi.org/10.1186/1471-2288-5-25 |