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ldbounds  

Lan-DeMets Method for Group Sequential Boundaries
View on CRAN: Click here


Download and install ldbounds package within the R console
Install from CRAN:
install.packages("ldbounds")

Install from Github:
library("remotes")
install_github("cran/ldbounds")

Install by package version:
library("remotes")
install_version("ldbounds", "2.0.2")



Attach the package and use:
library("ldbounds")
Maintained by
Charlie Casper
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2006-05-23
Latest Update: 2023-12-02
Description:
Computations related to group sequential boundaries. Includes calculation of bounds using the Lan-DeMets alpha spending function approach. Based on FORTRAN program ld98 implemented by Reboussin, et al. (2000) .
How to cite:
Charlie Casper (2006). ldbounds: Lan-DeMets Method for Group Sequential Boundaries. R package version 2.0.2, https://cran.r-project.org/web/packages/ldbounds. Accessed 05 Aug. 2026.
Previous versions and publish date:
(2026-07-09 07:52), 1.0-1 (2006-05-23 07:20), 1.1-1.1 (2018-08-31 19:40), 1.1-1 (2014-01-19 09:07), 2.0.0 (2022-02-24 13:00), 2.0.1 (2023-03-29 00:10)
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Complete documentation for ldbounds
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