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Re: st: dirifit

From   Maarten buis <>
Subject   Re: st: dirifit
Date   Thu, 6 Mar 2008 14:15:12 +0000 (GMT)

--- Viktor Slavtchev <> wrote:
> So the question would be, how to proceed when at least one of the 
> responses is allowed to be 0, but the model is not really a model of 
> competing alternatives (-mlogit-)?

You could have a look at this, which is basically an extension of
(Papke and Wooldridge 1996) to the multivariate case:

Hope this helps,

Papke, Leslie E. and Jeffrey M. Wooldridge. 1996. `Econometric Methods
for Fractional Response Variables with an Application to 401(k) Plan
Participation Rates.' Journal of Applied Econometrics 11(6):619632.

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

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