lti-metric index</li>
<li>
<code>YEAR</code>: probability sample (survey) year</li>
</ul>
<p>To estimate the change between samples (time points) for
<code>BMMI</code> (a continuous variable) and <code>NITR_COND</code> (a
categorical variable), run</p>
<div class="sourceCode" id="cb21"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="va">change_ests</span> <span class="op">&lt;-</span> <span class="fu"><a href="../reference/change_analysis.html">change_analysis</a></span><spa