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st: What grouping should I use for clogit?

From   Hadji Cortez Jalotjot <>
To   "" <>
Subject   st: What grouping should I use for clogit?
Date   Sun, 22 Jan 2012 22:46:23 -0800 (PST)

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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