Power Calculation for Stepped Wedge Designs.

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.

Installation

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)

Vignette

The vignette can be viewed with vignette("Getting_Started", package="SteppedPower")