Treatments
</h2>

<h3>Description</h3>

<p>Tests of the presence of the bacteria <em>H. influenzae</em>
in children with otitis media in the Northern Territory of Australia.
</p>


<h3>Usage</h3>

<pre><code class='language-R'>bacteria
</code></pre>


<h3>Format</h3>

<p>This data frame has 220 rows and the following columns:
</p>

<dl>
<dt>y</dt><dd><p>presence or absence: a factor with levels
<code>n</code> and <code>y</code>.</p>
</dd>
<dt>ap</dt><dd><p>active/placebo: a factor with levels <code>a</code>