Given that the Statalist response to this question has now executed a perfect circle,
you may be best advised to approach the program authors directly.
Jochen Sp�th
once again thanks for your help. Unfortunately your suggestion did not help to solve the problem since the homepage you posted is exactly the site from which the ado-file was actually obtained-just for your information.
Maarten buis
I vaguely remember that that problem got solved when the latest version
of -inteff- was installed, which can be downloaded from Edward Norton's
website: http://www.unc.edu/%7Eenorton/
Jochen Sp�th
> I try to estimate the interaction effect between two variables in a
> logit model.
>
> My model looks like this: Pr(y) = x1 + x2 + x1*x2 + X
>
> x1 is a continuously variable, x2 is a dummy variable in some
> specifications, in others it is a continuously variable. x1*x2 is the
> interaction effect, X are several control variables.
>
> To obtain the correct interaction effect, I use the inteff command
> provided as an ado-file by Norton, Wang, and Ai (2004) "Computing
> interaction effects and standard errors in logit and probit models",
> The Stata Journal 4, Number 2, pp. 154-167.
>
> Unfortunately, in some specifications the inteff command doesn't work
> and displays following error message:
>
> conformability error
> r(503);
>
> This problem was on statalist in April 2006, but as far as I see
> there was no solution provided. (see
> http://statacorp.com/statalist/archive/2006-04/msg00364.html). Does
> anybody have an idea how to solve my problem?
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