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st: Factor variables and the -margins- command


From   Fabien Bertho <fabien.bertho@sciences-po.org>
To   statalist@hsphsun2.harvard.edu
Subject   st: Factor variables and the -margins- command
Date   Tue, 24 Jul 2012 15:11:47 +0200 (CEST)

Hi, 

I would have some questions about factor variables and the -margins- command.

If I am right the -i.- and -margins- commands were introduced in the Stata 11 version. However, I have access to 10th version only. 

=> Concerning factor variables, does it exist an equivalent command to -i.- in Stata 10? 

=> Then, I would like to compute discrete changes of some dummy variables in a tobit model.
- If I am right, it gives the following code in Stata 11 (after using the i. for dummies):


-margins add_quar_1 add_quar_2 add_quar_3 add_quar_4, atmeans-

- Same question: are there equivalent commands in Stata 10 -- by using mfx, for instance?

In advance, thank you for your help

Fabien

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