[R] Vuong test

Stéphanie PAYET spayet.reesfrance at wanadoo.fr
Tue May 17 10:24:29 CEST 2005


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,

Stéphanie Payet

REES France
Réseau d'Evaluation en Economie de la Santé
28, rue d'Assas
75006 PARIS
Tél. +33 (0)1 44 39 16 90
Fax +33 (0)1 44 39 16 92
Mèl. reesfrance at wanadoo.fr
Site Internet : http://www.rees-france.com

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