mns = NULL)</code>. As evident from
the results table, the coefficients labeled <code>class1.A[1,2]</code>
are the regression coefficients.</p>
<p>There are two ways to test the difference in regression coefficients
across classes: using <code>lr_test(aux_model, compare = "A")</code>, to
compare the ‘A matrix’ (regression coefficients) across classes, or
<code>wald_test(aux_model, "class1.A[1,2]=class2.A[1,2]&amp;class1.A[1,2]=class3.A[1,2]")</code>.
The results indicate that there are no significant di