red. It governs how the p-values should be computed.
By default, the degrees of freedom of the Student t distribution is equal to the minimum size
of the clusters with which the VCOV has been clustered minus one. If <code>t.df="conventional"</code>,
then the degrees of freedom of the Student t distribution is equal to the number of
observations minus the number of estimated variables. You can also pass a number to
manually specify the DoF of the t-distribution.</p></dd>


<dt id="arg--">...<a class="anchor"