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st: margins with a transformed (natural log) independent variable
From
Lloyd Dumont <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: margins with a transformed (natural log) independent variable
Date
Thu, 20 Oct 2011 11:53:54 -0700 (PDT)
Hello. I am trying to obtain predicted probabilities using �rgins- after xtlogit. The problem is that the variable I am interested in analyzing is a log transform. So, the �rginsplot- yields a straight line.
- xtlogit DEPVAR INDEPVAR1 INDEPVAR2 INDEPVAR3_ln
- margins, at(INDEPVAR3_ln=(0(.5)4.5)) predict(pu0)
- marginsplot
I know how to deal with this issue if the transformed variable is a quadratic. You just have to make sure you use the syntax for factor variables in the estimation command. But, how do I let Stata know it’s a log transform?
Thank you for your help! Lloyd Dumont
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