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- Title
Stepped wedge designs could reduce the required sample size in cluster randomized trials.
- Authors
Woertman, Willem; de Hoop, Esther; Moerbeek, Mirjam; Zuidema, Sytse U; Gerritsen, Debby L; Teerenstra, Steven
- Abstract
The stepped wedge design is increasingly being used in cluster randomized trials (CRTs). However, there is not much information available about the design and analysis strategies for these kinds of trials. Approaches to sample size and power calculations have been provided, but a simple sample size formula is lacking. Therefore, our aim is to provide a sample size formula for cluster randomized stepped wedge designs.
- Publication
Journal of clinical epidemiology, 2013, Vol 66, Issue 7, p752
- ISSN
1878-5921
- Publication type
Journal Article
- DOI
10.1016/j.jclinepi.2013.01.009