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Re: st: ordered heckman help


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: ordered heckman help
Date   Mon, 14 Jul 2008 21:46:14 +0100 (BST)

Do these warnings persist in later itterations, or do these just occur
in the first two itterations. In the latter case there is no problem.

-- Maarten

--- Sami Haile <samex_zegr8@yahoo.com> wrote:

> Dear Statalist
> I tried to run ordered probit with selection using oheckman command
> with maximum liklihood....
> I got a Warning: Two-step initial estimate of rho0 = 1.1182849
> truncated to +/-.85.
> Warning: Two-step initial estimate of rho1 = . truncated to +/-.85..
>  Any help is appriciated.
> Regards,
> Sami
> 
> 
>       
> 
> 
> *
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> 


-----------------------------------------
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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