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SteppedPower - Power Calculation for Stepped Wedge Designs
SteppedPower offers tools for power and sample size calculation as well as design diagnostics for longitudinal mixed model settings, with a focus on stepped wedge designs. All calculations are oracle estimates i.e. assume random effect variances to be known (or guessed) in advance.
Install from CRAN with install.packages("SteppedPower"). Current version on CRAN is 0.3.2.
To install the latest stable version type
devtools::install_github("PMildenb/SteppedPower", build_vignettes=TRUE)
The development version with the most recent changes can be installed with devtools::install_github("PMildenb/SteppedPower", ref='devel', build_vignettes=TRUE)
The vignette can be viewed with vignette("Getting_Started", package="SteppedPower")
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.