PwrGSD: Power in a Group Sequential Design

Tools the evaluation of interim analysis plans for sequentially monitored trials on a survival endpoint; tools to construct efficacy and futility boundaries, for deriving power of a sequential design at a specified alternative, template for evaluating the performance of candidate plans at a set of time varying alternatives.

Version: 2.000
Depends: survival
Published: 2014-03-21
Author: Grant Izmirlian
Maintainer: Grant Izmirlian <izmirlig at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: yes
In views: ClinicalTrials
CRAN checks: PwrGSD results


Reference manual: PwrGSD.pdf
Vignettes: Using GrpSeqBnds
Using PwrGSD
Using cpd-PwrGSD
Package source: PwrGSD_2.000.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Snow Leopard binaries: r-release: PwrGSD_2.000.tgz, r-oldrel: PwrGSD_2.000.tgz
OS X Mavericks binaries: r-release: PwrGSD_2.000.tgz
Old sources: PwrGSD archive