tps://amices.org/mice/reference/cbind.html" class="external-link">cbind</a></span><span class="op">(</span> <span class="fl">2</span>,<span class="fl">0</span> <span class="op">)</span></span>
<span><span class="co"># estimate model in smirt</span></span>
<span><span class="va">mod1</span> <span class="op">&lt;-</span> <span class="fu">sirt</span><span class="fu">::</span><span class="fu"><a href="smirt.html">smirt</a></span><span class="op">(</span><span class="va">dat</span>, Qmatrix<span class="op">=</sp