st: Problems with calculating marginal effects for categoricalvariables in ologit models

[MANUELFERN.FLORES@rai.usc.es]

Dear users,

My question is following one: I do not know how to calculate average  
marginal effects (AME) for categorical variables with more than two  
categories?
In my ordered logit model, I have a dependent variable with 4  
categories and 5 categorical explanatory variables, 3 of them with  
more than two categories. I tried to implement the method of Tam�s  
Bartus which is decribed in his article "Estimation of marginal  
effects using margeff" (2005). His suggestion is to use the following  
command:
Margeff, dummies (B *)
where D are all dummies for which you want to calculate the marginal effects.
The problem is that by trying to do this I got the following error:  
"[_cut1] not found" r(111)

I would appreciate very much any suggestions.

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