A GUI-Based Program to Compute Probabilities Regarding Group Sequential Designs

A graphical user interface to compute group sequential designs based on normally distributed test statistics, particularly critical boundaries, power, drift, and confidence intervals of such designs. All computations are based on the alpha spending approach by Lan-DeMets with various alpha spending functions being available to choose among.

News

Changes in 1.3.3 (2015-07-08)

Code revision:

moved all alpha spending functions into a single file
removed 'require(tcltk) dependency' and added NAMESPACE imports accordingly
removed special (non-UTF8) characters and trimmed whitespaces

Documentation:

Fixed broken link to Lan-DeMets program in help file
New maintainer email address: [email protected]
Shortened 'Description' and fixed title case in 'Title' field.

Changes in 1.3.2 (2014-01-10)

Bugfixes:

Fixed error occuring with task -3- when user had chosen "Asymmetric" bounds

Documentation:

Changed maintainer email address to [email protected]
Revised "Title" and general "Description"
Revised the details section of the manual

Reference manual

install.packages("GroupSeq")

1.3.5 by Roman Pahl, a year ago

https://github.com/rpahl/GroupSeq

Report a bug at https://github.com/rpahl/GroupSeq/issues

Browse source code at https://github.com/cran/GroupSeq

Authors: Roman Pahl [aut, cre]

Documentation: PDF Manual

Task views: Clinical Trial Design, Monitoring, and Analysis, Design of Experiments (DoE) & Analysis of Experimental Data

GPL (>= 2) license

Imports tcltk

Suggests testthat

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