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st: gnbreb first differences

From   Erin M Simpson <>
Subject   st: gnbreb first differences
Date   Sat, 12 Mar 2005 18:29:33 -0500 (EST)

I am wondering if code has been devleoped that will allow for Clarify-like
first differences or relative risks to be generated from the gnbreg model
(Clarify supports the negative binomial, but not the generalized form).

Obviously the predict command works, but I need to develop predictions for
various combinations of x[i]s.

One suggestion I have seen is to use the "mfx" command; is there an
intuitive interpretation of these results?

Other suggesitons welcome.



Erin M Simpson
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