<p>I don’t have unilateral close/reopen privileges, but if I did, I would take the stance that your behavior earned you a timeout.</p>
<p>Regarding the ambiguity, you still haven’t explained why you’re fine using Wald test p-values on individual parameters but oppose a global Wald test. Further, your examination of the individual parameters leaves me wondering if a global test really is what you seek, particularly given your interest in testing XA (what about it?). <strong>(EDIT)</strong> Finally, your first line asks if a categorical variable is significant overall. Does that mean that you want to test that some group has a nonzero mean? What if they all have the same nonzero mean?</p>
<p>I think you want an alternative to the usual ANOVA, of which Kruskal-Wallis, likelihood ratio, and permutation testing are three possibilities, but it’s not clear to me that those address the question that you want to ask.</p>
