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st: Marginal Effects


From   Michael.D.Wilson@frb.gov
To   statalist@hsphsun2.harvard.edu
Subject   st: Marginal Effects
Date   Thu, 19 Oct 2006 14:25:02 -0400

I am using Julian Fennema's dhurdle program for Stata and am running into 
a problem.  I am doing a Cragg model for saving habits of consumers.  The 
first hurdle is whether or not a consumer has savings and for those that 
do, i.e. =1, how much savings they have.  The model runs fine and 
converges after only a few iterations.  However, I need to compute the 
marginal effects for the results and this is where I run into problems.  I 
tried using -mfx- but I get an error message saying that 

"unrecognized command:  dhurd_p"

Anyone familiar with this problem at all?  Im guessing it has something to 
do with the predictive nature of the model, hence the "_p", but Im not 
sure.  Can someone give me any advice in finding the marginal effects?

--
Michael Wilson
Consumer Education and Research
Consumer and Community Affairs 
Federal Reserve Board of Governors
michael.d.wilson@frb.gov
(202) 452-2884
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