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st: marginal effects for ZINB with interactions and squared terms
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From |
"Rullani Francesco" <[email protected]> |
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To |
[email protected] |
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Subject |
st: marginal effects for ZINB with interactions and squared terms |
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Date |
Fri, 03 Mar 2006 19:05:30 +0100 |
Hello!
I am estimating a model with interactions:
a+b(x_1)+c(x_2)+d(x_1*x_2)
and squared terms:
e+f(z_1)+g(z_1)^2
using a zero-inflated negative binomial regression (ZINB)
because of overdispersion and excess of zeros in the data.
Does anyone know how I can obtain marginal effects and
their standard errors, given that mfx and margeff do not
"know" that I have interactions and squared terms?
Thanks a lot!
Francesco
Francesco Rullani
Ph.D. Student,
--Laboratory of Economics and Management,
Sant'Anna School of Advanced Studies,
Piazza dei Martiri della liberta, 33,
56127 Pisa,
Italy.
--CESPRI
Bocconi University
Via Sarfatti 25,
20136 Milan,
Italy.
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