Have you read
http://www.stata.com/support/faqs/stat/mfx_dydx.html
http://www.stata.com/support/faqs/stat/mfx_interact.html
yet?
A good place to start.
On 3/3/06, Rullani Francesco <[email protected]> wrote:
> 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?
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