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RE: st: Tobit fixed effects model


From   "Jacobs, David" <jacobs.184@sociology.osu.edu>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Tobit fixed effects model
Date   Fri, 24 Aug 2012 16:51:52 +0000

I don't think throwing case dummies into a tobit analysis is a good idea.  

First, Tobit is partly based on probit, which as far as I know cannot be modified to handle fixed effects.  And second, and with the possible exception of count models, using the case dummies to get fixed effects only works in for OLS based models, and then the standard errors will not be quite right.

Bottom line, don't do it.

Dave Jacobs

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Fitzgerald, James
Sent: Friday, August 24, 2012 5:20 AM
To: <statalist@hsphsun2.harvard.edu>
Subject: Re: st: Tobit fixed effects model

Hi Ebru

As far as I know the command does not exist. However, what you could do is include dummies for your panel identifier variable and run OLS with the relevant Tobit command/option. 

HTH

James

On 24 Aug 2012, at 10:04, "Ebru Ozturk" <ebru_0512@hotmail.com> wrote:

> 
> Dear All,
> 
> Is there any command that runs tobit fixed effects model in Stata 10?
> 
> Kind Regards
> Ebru                         
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