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st: biprobit: test for difference in marginal effects


From   Wenhui Wei <weiwenhui@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: biprobit: test for difference in marginal effects
Date   Thu, 4 Nov 2004 14:10:03 -0500

I'm runing a biprobit model (two treatment modes) and get two sets
marginal effects by the MFX command.


My quesiton is: for a certain variable, for example, gender (with male
as the base), how to test whether its estimated marginal effects are
significant different in the 2 equations. i.e. the marginal effect of
female in treatment mode 1 is significantly different from that in
treatment mode 2?

test command only test for the difference in the estimated
coefficients, not marginal effects.

Thanks,
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