pan><span class="va"><a href="reference/sim_data.html">sim_data</a></span><span class="op">[</span><span class="va">MDV</span> <span class="op">==</span> <span class="fl">0</span><span class="op">]</span></span>
<span></span>
<span><span class="co">#Add LLOQ for each Study </span></span>
<span><span class="va">obs_data</span><span class="op">$</span><span class="va">LLOQ</span> <span class="op">&lt;-</span> <span class="va">obs_data</span><span class="op">[</span>, <span class="fu"><a href="https://rdrr.io/