ssanv: Sample Size Adjusted for Nonadherence or Variability of Input Parameters

A set of functions to calculate sample size for two-sample difference in means tests. Does adjustments for either nonadherence or variability that comes from using data to estimate parameters.

Install the latest version of this package by entering the following in R:
AuthorMichael P. Fay <>
Date of publication2015-06-23 17:26:38
MaintainerMichael P. Fay <>

View on CRAN

Questions? Problems? Suggestions? or email at

Please suggest features or report bugs with the GitHub issue tracker.

All documentation is copyright its authors; we didn't write any of that.