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Date:         Wed, 18 Jun 2008 16:49:29 -0400
Reply-To:     "Amy T. Brown" <amara_tabu@YAHOO.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         "Amy T. Brown" <amara_tabu@YAHOO.COM>
Subject:      Re: Vuong statistic

On Wed, 18 Jun 2008 16:40:02 -0400, Amy T. Brown <amara_tabu@YAHOO.COM> wrote:

>Hello, > >I know that Vuong stat can be used to test the fit of Poisson vs. ZIP >model or Negative Binomial vs. ZINB model. Can it be used to test Negative >binomial vs. ZIP? They are non-nested models so, I am thinking it should >work but is that right? > >Thanks in advance! > >Amy.

Never mind, I know that's not right. Vuong compares zero inflated count models with their non-zero inflated analogs only.

Thanks anyway!


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