This package contains R-functions to perform power calculation in a group sequential clinical trial with censored survival data and possibly unequal patient allocation between treatment and control groups. The fuctions can also be used to determine the study duration in a clinical trial with censored survival data as the sum of the accrual duration, which determines the sample size in a traditional sense, and the follow-up duration, which more or less controls the number of events to be observed. This package also contains R functions and methods to display the computed results.
Package details |
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Author | Emil A. Cornea, Bahjat F. Qaqish, and Joseph G. Ibrahim |
Maintainer | Emil A. Cornea <ecornea@live.unc.edu> |
License | GPL-2 |
Version | 1.0 |
Package repository | View on CRAN |
Installation |
Install the latest version of this package by entering the following in R:
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