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st: RE: Marginal & Impact Effects in a Tobit


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Marginal & Impact Effects in a Tobit
Date   Tue, 3 Aug 2004 14:59:31 +0100

. search dtobit 

points to a detailed discussion: 

STB-56  sg144 . . . . . . . . . . . . . .  Marginal effects of the tobit model
        (help dtobit if installed)  . . . . . . . . . . . . . . . . .  R. Cong
        7/00    pp.27--34; STB Reprints Vol 10, pp.189--197
        provides four forms of marginal effects for a tobit model
        and discusses the McDonald and Moffitt decomposition

Experts may be able to tell you what this can do that can't 
be done using -mfx- after -tobit-. 

Nick 
n.j.cox@durham.ac.uk 

gonwei@adinet.com.uy
> 
> I'm running a tobit with several dummies.
> I calculated the marginal effect in the average probabilities 
> and in the
> average characteristics and the results are quite different 
> from the ones
> I obtain after the command 'dtobit' in Stata.
> I couldn't find info on the way it calculates and I was 
> wondering if any
> of you have an idea about this.
> 

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