SurvGSD: Group Sequential Design for a Clinical Trial with Censored Survival Data

Sample size calculation utilizing the information fraction and the alpha spending function in a group sequential clinical trial with censored survival data from underlying generalized gamma survival distributions or log-logistic survival distributions. Hsu, C.-H., Chen, C.-H, Hsu, K.-N. and Lu, Y.-H. (2018) A useful design utilizing the information fraction in a group sequential clinical trial with censored survival data. To appear in Biometrics.

Version: 1.0.0
Depends: R (≥ 3.1.0)
Imports: flexsurv, ldbounds, mnormt, stats
Published: 2018-05-16
Author: Hsu, Chih-Yuan and Chen, Chen-Hsin
Maintainer: Chih-Yuan Hsu <cyhsu at>
License: GPL-2 | GPL-3
NeedsCompilation: no
CRAN checks: SurvGSD results


Reference manual: SurvGSD.pdf


Package source: SurvGSD_1.0.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): SurvGSD_1.0.0.tgz, r-release (x86_64): SurvGSD_1.0.0.tgz, r-oldrel: SurvGSD_1.0.0.tgz


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