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Re: st: ivtobit and limited dependent endogenous variable


From   "feldman" <feldman@primal.ucdavis.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: ivtobit and limited dependent endogenous variable
Date   Fri, 13 Jul 2007 08:10:06 -0700

Thanks for your reply Austin. I will take a close look at
qvf but from a quick glance it seems to me that I might have
problems in getting predicted values and marginal effects if
I use it. 

Alejandro

----- Original Message Follows -----
From: "Austin Nichols" <austinnichols@gmail.com>
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: ivtobit and limited dependent endogenous
variable
Date: Thu, 12 Jul 2007 11:34:40 -0400

> Alejandro feldman <feldman@primal.ucdavis.edu>:
> Are you sure you need a Tobit-class model?  I find that
> most people using -tobit- would in fact be better off with
> -poisson- or -glm- (and a search of the Statalist archives
> turns up many instances of this advice).  The analogy to
> -ivtobit- is -qvf- (findit qvf) described in Stata Journal
> Volume 3, Number 4 and at: http://www.stata.com/merror/
> 
> On 7/12/07, feldman <feldman@primal.ucdavis.edu> wrote:
> > Thanks to Brian for the clarification. Given that, are
> > there any options in Stata to deal with a tobit with and
> > endogenous variable that is itself censored?
> >
> > ----- Original Message Follows -----
> > From: "Brian P. Poi" <bpoi@stata.com>
> > > Both -ivprobit- and -ivtobit- are for use when the
> > > endogenous variable is  *continuous*.
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