# Stata multinomial logit IIA assumption violated or not?

My dependent variable is Choice, 0 for non-issuers, 1 for seasoned equity issuers, 2 for convertible issuers and 3 for bond issuers. I use the following command to run a multinomial logit regression:

mlogit Choice CR $ConVar, base(0)  To test for IIA assumption, I use the following command: mlogtest, haus  The output is below: Does this result indicate that IIA is violated? Then I test the IIA assumption for another multinomial logit regression, in which the dependent variable is Security (0 for seasoned equity issuers, 1 for convertible issuers, and 2 for bond issuers). The Stata commands are below: mlogit Security CR$ConVar, base(0)
mlogtest, haus


Output of IIA test is shown below:

Again, does this mean that the IIA assumption is violated?

Could anyone interpret these two results for me? And I am not sure why some categories of dependent variables have negative chi2.