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st: Tests not available with "robust" option

From   Pauline Emilie <>
Subject   st: Tests not available with "robust" option
Date   Thu, 24 Jul 2003 12:30:36 -0700 (PDT)

Dear all, 

Why are some tests not availables as soon as you use
the option " robust " ? I think more particularly at
"Likelihood ratio test of alpha=0 with Nbreg models or
at the Vuong test with Zinb?
In fact, Vuong can't be computed with Robust.

Thank you for your advices.


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