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Re: st: What grouping should I use for clogit?

From   Klaus Pforr <>
Subject   Re: st: What grouping should I use for clogit?
Date   Tue, 24 Jan 2012 12:11:39 +0100

Dear Hadji,

could tell a little bit more about your data, and the experimental design? A data example would be helpful.



Am 23.01.2012 07:46, schrieb Hadji Cortez Jalotjot:
I am estimating a choice model using the clogit command.  Data is from a choice experiment.

Each respondent was shown 10 choice sets.  Each choice set has 3 choices.

So basically, each respondent corresponds to 30 rows of observations.

My question is, should the respondents (respno) be my group for the clogit?  or should I treat each choice as the "group"?

Any suggestions or explanations are appreciated.


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Klaus Pforr
Universität Mannheim
D - 68131 Mannheim
Tel:  +49-621-181 2797
fax:  +49-621-181 2803

Besucheranschrift: A5, Raum A309

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