computeDGivenXi: Given the estimates of the pi and theta, compute d.
In sp23design: Design and Simulation of Seamless Phase II-III Clinical Trials
computeDGivenXi R Documentation
Given the estimates of the π and θ, compute d.
Description
This function computes d via
d(π,ξ)=\{ π_0 a + (1-π_0)\} - \{π_1 abc + (1-π_1)b \}
Usage
computeDGivenXi(piVec, xiVec)
Arguments
piVec
The two-element vector of (π_0, π_1)
xiVec
The three-element vector of (a=e^α, b=e^β, c=e^γ)
Details
This is an approximation to the hazard ratio
Value
The computed value of d, a scalar
Author(s)
Mei-Chiung Shih, Balasubramanian Narasimhan, Pei He
References
Lai, Tze Leung and Lavori, Philip W. and Shih, Mei-Chiung. Sequential
Design of Phase II-III Cancer Trials, Statistics in Medicine, Volume 31, issue 18, p.1944-1960, 2012.
sp23design documentation built on April 19, 2022, 5:08 p.m.
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| computeDGivenXi | R Documentation |
Given the estimates of the π and θ, compute d.
Description
This function computes d via
d(π,ξ)=\{ π_0 a + (1-π_0)\} - \{π_1 abc + (1-π_1)b \}
Usage
computeDGivenXi(piVec, xiVec)
Arguments
piVec |
The two-element vector of (π_0, π_1) |
xiVec |
The three-element vector of (a=e^α, b=e^β, c=e^γ) |
Details
This is an approximation to the hazard ratio
Value
The computed value of d, a scalar
Author(s)
Mei-Chiung Shih, Balasubramanian Narasimhan, Pei He
References
Lai, Tze Leung and Lavori, Philip W. and Shih, Mei-Chiung. Sequential Design of Phase II-III Cancer Trials, Statistics in Medicine, Volume 31, issue 18, p.1944-1960, 2012.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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