thank you Maarten, hence I can simply apply the linear case formulas...
thanks again
Maria
Citazione Maarten buis <[email protected]>:
> --- [email protected] wrote:
> > I�m estimating a Poisson model, which includes an interaction term
> > and I need to compute the impact (marginal effect) of x1 on lnY.
> >
> > I have found on SJ an article �Computing interaction effects and
> > standard errors in Logit and Probit models�, by Norton, Wang and Ai
> > (2004), who warn that for nonlinear models
> <snip>
> > Please notice that my interest is computing the effect of x1 on lnY
> > , I�m not interested in the marginal effect of the interaction term,
> > nor in the effect of x1 on E(Y), because my dependent variable is
> > not a count.
> <snip>
>
> If you are only interested in the effect on ln(y) than it is no longer
> a non-linear model, so the article by Norton et al. is no longer
> relevant.
>
> -- Maarten
>
> -----------------------------------------
> Maarten L. Buis
> Department of Social Research Methodology
> Vrije Universiteit Amsterdam
> Boelelaan 1081
> 1081 HV Amsterdam
> The Netherlands
>
> visiting address:
> Buitenveldertselaan 3 (Metropolitan), room Z434
>
> +31 20 5986715
>
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
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