checkWCE

This function checks whether the arguments passed to the WCE function are in the correct format. If at least one argument is incorrectly specified, the function returns an error message specifying what needs to be fixed.

A flexible method for modeling cumulative effects of time-varying exposures, weighted according to their relative proximity in time, and represented by time-dependent covariates. The current implementation estimates the weight function in the Cox proportional hazards model. The function that assigns weights to doses taken in the past is estimated using cubic regression splines.

Marie-Pierre Sylvestre

Weighted Cumulative Exposure Models

Marie-Eve Beauchamp

Ryan Patrick Kyle

Michal Abrahamowicz

checkWCE function

<dl><dt>data</dt>
<dd>A data frame in the long (interval) format with one line per unit of time.</dd>
<dt>id</dt>
<dd>The name of the variable in <code>data</code> that identifies subjects.</dd>
<dt>event</dt>
<dd>The name of the variable in <code>data</code> that identifies the events (must be 0 or 1).</dd>
<dt>start</dt>
<dd>The name of the variable in <code>data</code> that identifies the beginning of the interval.</dd>
<dt>stop</dt>
<dd>The name of the variable in <code>data</code> that identifies the end of the interval.</dd>
<dt>expos</dt>
<dd>The name of the variable in <code>data</code> that represents the exposure of interest.</dd></dl>

Arguments

Verify that the arguments passed to the WCE function are in correct format — checkWCE

<dl>

<dt>data</dt>
<dd>A data frame in the long (interval) format with one line per unit of time.</dd>


<dt>id</dt>
<dd>The name of the variable in <code>data</code> that identifies subjects.</dd>


<dt>event</dt>
<dd>The name of the variable in <code>data</code> that identifies the events (must be 0 or 1).</dd>


<dt>start</dt>
<dd>The name of the variable in <code>data</code> that identifies the beginning of the interval.</dd>


<dt>stop</dt>
<dd>The name of the variable in <code>data</code> that identifies the end of the interval.</dd>


<dt>expos</dt>
<dd>The name of the variable in <code>data</code> that represents the exposure of interest.</dd>

</dl>

checkWCE: Verify that the arguments passed to the WCE function are in correct format

Description

Usage

Value

Arguments

Details

Examples