/code>.</p></dd>


<dt id="arg-treat-var">treat_var<a class="anchor" aria-label="anchor" href="#arg-treat-var"></a></dt>
<dd><p>Only if argument <code>fml</code> is <em>not</em> a formula. The vector identifying
the treated and the control observations (the vector can be of any type but must
contain only two possible values). Must be of the same length as the data.</p></dd>


<dt id="arg-post-var">post_var<a class="anchor" aria-label="anchor" href="#arg-post-var"></a></dt>
<dd><p>Only if argument <code>fml<