Lan-DeMets Method for Group Sequential Boundaries

Computations related to group sequential boundaries. Includes calculation of bounds using the Lan-DeMets alpha spending function approach.


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Reference manual

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install.packages("ldbounds")

1.1-1.1 by Charlie Casper, 3 years ago


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


Authors: Charlie Casper and Oscar A. Perez. Based on FORTRAN program ld98.


Documentation:   PDF Manual  


Task views: Clinical Trial Design, Monitoring, and Analysis


GPL (>= 2) license


Imports lattice


Imported by AGSDest, SurvGSD, blockRAR, gsrsb, triggerstrategy.


See at CRAN