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Re: st: problem with the inteff command


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: problem with the inteff command
Date   Tue, 4 Mar 2008 20:30:50 +0000 (GMT)

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/

Hope this helps,
Maarten

--- Jochen Späth <jochen.spaeth@iaw.edu> wrote:

> Dear List,
> 
> 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?
> 
>  
> 
> Thank you for your help!
> 
> Jochen
> 
> ---
> Jochen Späth
> Dipl.-Volkswirt
> Institut für Angewandte Wirtschaftsforschung (IAW) Tübingen
> Ob dem Himmelreich 1
> 72074 Tübingen
> Tel.: 07071/9896-14
> Fax : 07071/9896-99
> EMail: jochen.spaeth@iaw.edu
> IAW-Homepage: www.iaw.edu
> 
> 
> *
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> 


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