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Re: st: transition probabilities


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: transition probabilities
Date   Mon, 14 May 2007 17:50:06 +0100 (BST)

--- emre ekinci <eekinci2610@hotmail.com> wrote:
> I need to estimate transition probabilities subject to some
> constraints.I do  not know how to tell stata to do that.
> speicificallly,I have a 3x3 matrix with each cell contatining some 
> probability.I need to estimate these probabilities subject to 6
> marginal probabilities.

The difficulty is not with Stata. The probabilities in the matrix are
not uniquely defined by just the marginal probabilities. You also need
the odds ratios.

Hope this doesn't destroy your research plans too much,
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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