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Calculate power for cluster randomized trials (CRTs) including multiarm trials, individually randomized group treatment trials (IGRTTs), stepped wedge trials (SWTs) and others using closedform (analytic) solutions, and estimates power using Monte Carlo methods.
Package details 


Author  Ken Kleinman [aut, cre], Alexandria Sakrejda [aut], Jon Moyer [aut], Joshua Nugent [aut], Nicholas Reich [aut], Daniel Obeng [ctb] 
Maintainer  Ken Kleinman <ken.kleinman@gmail.com> 
License  GPL (>= 2) 
Version  0.7.0 
Package repository  View on CRAN 
Installation 
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