mystack

a dataframe containing one or more variables named with a common
 prefix

object

fu.vars

Do you want to add an ID variable with a common
 value given to all records resulting from a given input record?
 Default is <code>FALSE</code>

create.idvar

Given a dataframe containing one or more variables named with a common
 prefix, this function creates a stacked dataset with one set of
 observed values of the variables (in order of occurence) per line.

data

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

mystack function

<dl> <dt>object</dt>
<dd>a dataframe containing one or more variables named with a common
 prefix</dd> <dt>fu.vars</dt>
<dd>a list of the unique prefixes</dd> <dt>create.idvar</dt>
<dd>Do you want to add an ID variable with a common
 value given to all records resulting from a given input record?
 Default is <code>FALSE</code></dd></dl>

Arguments

Grant Izmirlian &lt;izmirlian@nih.gov&gt;

Author

Stack a dataset — mystack

<dl>

 <dt>object</dt>
<dd>a dataframe containing one or more variables named with a common
 prefix</dd>

 <dt>fu.vars</dt>
<dd>a list of the unique prefixes</dd>

 <dt>create.idvar</dt>
<dd>Do you want to add an ID variable with a common
 value given to all records resulting from a given input record?
 Default is <code>FALSE</code></dd>

</dl>

mystack: Stack a dataset

Description

Usage

Value

Arguments

Author

Examples