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Re: st: two level model


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: two level model
Date   Sun, 19 Aug 2007 13:00:41 +0100 (BST)

--- Viktor Slavtchev wrote:
> Please correct me if I am wrong, but as far as I know, in the 
> McFadden's choice model only one option is allowed to be chosen.
> That is, everyone goes for only one particular option out of set of
> many options. In other words, if one decides to invest in the US, 
> all the money goes to US and nothing can be invested elsewhere.

Absolutely, and this is what I meant when I started my answer by saying
that I only had a very partial answer. I was pointing you to a model
that deals with a very similar though not exactly the same problem. The
reason I pointed this model out to you, is that knowing of such a
similar model can sometimes help you find the correct model, or make it
easier to derive such a model yourself. 

> And second, it seems to be that -asclogit- is available only in
> Stata 10. Since I am working with Stata 9 my question is about the
> differences between the new -asclogit- and the old -clogit-.
> According to the Stata manual McFadden's choice model can be
> estimated by means of -clogit-.

True

Hope this helps,
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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