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!

Amy.