n class="va">rel_tbl</span>, methods <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"mr"</span>, <span class="st">"kaplan"</span>, <span class="st">"johnson"</span>, <span class="st">"nelson"</span><span class="op">)</span><span class="op">)</span>
<span class="co">#&gt; The 'mr' method only considers failed units (status == 1) and does not retain intact units (status == 0).</span>
<span class="va