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st: update to -margeff- on SSC

From   "Tamas Bartus (tbartus)" <>
Subject   st: update to -margeff- on SSC
Date   Sun, 08 May 2005 15:25:12 +0200

Thanks to Kit Baum, an update to -margeff- program has been added to SSC.
-margeff- estimates fasly both average marginal effects and marginal effects at the
mean after several categorical dependent variable models.

The new version (5 may 2005) features some new options, and the syntax became
more similar to that of -mfx-.

Besides, the new version corrects the following problems of the previous distributions:

1. marginal effects after -biprobit- were wrong for some outcomes,
   due to a sign error in the program.
2. marginal effects after -oprobit- and -ologit- were wrong for the intermediate
   outcomes, due to a small error in the program.
3. The 22 april 2005 version produces wrong results if the user specified the
   dummies() option.

I apologize for any mistakes that might have occured in published work.

To install -margeff-, type within Stata

. ssc inst margeff

Or visit the website


Tamas Bartus, PhD
Associate Professor, Department of Sociology and Social Policy
Corvinus University Budapest
(formerly University of Economics)
1093 Budapest, Fovam ter 8.
Phone: +36-1-4825-226         Fax:   +36-1-4825-226

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