d by Logan</h2>

<h3>Description</h3>

<p>Intergenerational occupational mobility data with covariates.
</p>


<h3>Usage</h3>

<pre><code class='language-R'>logan
data(logan, package="survival")
</code></pre>


<h3>Format</h3>

<p>A data frame with 838 observations on the following 4 variables.
</p>

<dl>
<dt>occupation</dt><dd><p>subject's occupation, a factor with levels
<code>farm</code>, <code>operatives</code>, <code>craftsmen</code>, <code>sales</code>,
and <code>professional</code></p>
</dd>
<dt>focc