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st: RE: heckman and singer


From   "Maarten Buis" <M.Buis@fsw.vu.nl>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: heckman and singer
Date   Mon, 13 Nov 2006 15:03:00 +0100

--- ncdcta00@uniroma2.it wrote:
> I want to estimate the heterogeneous models by  heckman and singer,
> Do you Know if existe in stata a command for this type of duration 
> model?


The statalist is a multidisciplinary list, so if you use a reference 
like heckman and singer, which may be well known in your 
(sub-)discipline but probably not outside your discipline, you run a 
big risk that someone may know the answer but doesn't understand you, 
so can't answer. I assume you refer to the article below, and if 
that's the case then it is implemented for some models in Stephen 
Jenkins' -hshaz- package.

Heckman, James & Singer, Burton, 1984. "A Method for Minimizing the 
Impact of Distributional Assumptions in Econometric Models for 
Duration Data," Econometrica, vol. 52(2), pages 271-320

HTH,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology 
Vrije Universiteit Amsterdam 
Boelelaan 1081 
1081 HV Amsterdam 
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434 

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------



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