Re: [R] Vuong test

From: Seyed Reza Jafarzadeh <srjafarzadeh_at_gmail.com>
Date: Tue 17 May 2005 - 18:59:14 EST

Hi Stéphanie,

The Vuong test can be done in Stata
(http://www.stata.com/support/faqs/stat/vuong.html), but I am also looking for its code in R. In addition to "zicounts", Dr. Simon Jackman (http://pscl.stanford.edu/) has provided the code for fitting the zero-inflated (http://pscl.stanford.edu/zeroinfl.r) and hurdle (http://pscl.stanford.edu/hurdle.r) count models.

Reza

On 5/17/05, Stéphanie PAYET <spayet.reesfrance@wanadoo.fr> wrote:
> Hi,
>
> I have two questions. First, I'd like to compare a ZINB model to a negativ
> binomial model with the Vuong test, but I can't find how to performe it from
> the zicount package. Does a programm exist to do it ?
> Second, I'd like to know in which cases we have to use a double hurdle model
> instead of a zero inflated model.
>
> Many thanks,
>
> Stéphanie Payet
>
> REES France
> Réseau d'Evaluation en Economie de la Santé
> 28, rue d'Assas
> 75006 PARIS
> Tél. +33 (0)1 44 39 16 90
> Fax +33 (0)1 44 39 16 92
> Mèl. reesfrance@wanadoo.fr
> Site Internet :
http://www.rees-france.com
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
>



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue May 17 19:07:36 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:31:47 EST