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<table width="100%" summary="page for aspirin"><tr><td>aspirin</td><td align="right">R Documentation</td></tr></table>

<h2> Aspirin Data </h2>

<h3>Description</h3>


<p>Efficacy of Aspirin in preventing death after a myocardial infarct.
</p>


<h3>Usage</h3>

<pre>data("aspirin")</pre>


<h3>Format</h3>


<p>A data frame with 7 observations on the following 4 variables.
</p>

<dl>
<dt><code>dp</code></dt><dd><p>number of deaths after placebo.</p>
</dd>
<dt><code>tp</code></dt><dd><p>total number subjects treated with placebo.</p>
</dd>
<dt><code>da</code></dt><dd><p>number of deaths after Aspirin.</p>
</dd>
<dt><code>ta</code></dt><dd><p>total number of subjects treated with Aspirin.</p>
</dd>
</dl>



<h3>Details</h3>


<p>The data were collected for a meta-analysis
of the effectiveness of Aspirin (versus placebo) in preventing 
death after a myocardial infarction. 
</p>


<h3>Source</h3>


<p>J. L. Fleiss (1993), The statistical basis of meta-analysis.
<EM>Statistical Methods in Medical Research</EM> <B>2</B>, 
121&ndash;145.
</p>


<h3>Examples</h3>

<pre>

  data("aspirin", package = "HSAUR")
  aspirin

</pre>


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