--- On Mon, 30/11/09, Shuaizhang Feng wrote:

> But what should I do after running xtlogit , in order to

> get results on average marginal effect that are comparable

> to "logit" and then "margins, dydx(*)"? I have looked at the

> help files but could not figure this out.

The closest you can get is to specify the -predict(pu0)- option.

This will fix the group specific intercept at 0 (= the mean), but

otherwise averages the marginal effects over the other explanatory

variables. So this is not quite an average marginal effect, but

a mixture between the marginal effect at average values for the

explanatory variables (the group specific intercepts) and

average marginal effects (over the other variables). Purists would

probably prefer to use the BLUPs for the intercepts and also

average over those.

Hope this helps,

Maarten

--------------------------

Maarten L. Buis

Institut fuer Soziologie

Universitaet Tuebingen

Wilhelmstrasse 36

72074 Tuebingen

Germany

http://www.maartenbuis.nl--------------------------

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