misc

Tools for the evaluation of interim analysis plans for sequentially
monitored trials on a survival endpoint; tools to construct efficacy and
futility boundaries, for deriving power of a sequential design at a specified
alternative, template for evaluating the performance of candidate plans at a
set of time varying alternatives. See Izmirlian, G. (2014) <doi:10.4310/SII.2014.v7.n1.a4>.

Grant Izmirlian

PwrGSD

Power in a Group Sequential Design

DX function

<dl> <dt>x</dt>
<dd>A grid of time points (increasing)</dd></dl>

Arguments

Grant Izmirlian &lt;izmirlian@nih.gov

Author

A utility function for forming differences — DX

<dl>

 <dt>x</dt>
<dd>A grid of time points (increasing)</dd>

</dl>

DX: A utility function for forming differences

Description

Usage

Value

Arguments

Author