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.
|Author||Emil A. Cornea, Bahjat F. Qaqish, and Joseph G. Ibrahim|
|Date of publication||2012-07-02 14:27:34|
|Maintainer||Emil A. Cornea <email@example.com>|