st: logistic regression

["meena khan" <meena_25@hotmail.com>]

Hello,

I have a dataset where all variables are replicated twice for each subject, 
only one variable (SNP) is different in each person:

ID          SNP     Event    X1         X2

1             0          0          a          a
1             1          0          a          a
2             1          1          b          b
2             1          1          b          b

I would like to know if it is correct to cluster by ID in a normal logistic 
regression model? Conditional logistic regression does not work as when I 
group it by ID as there is no variation within the groups. The logistic 
cluster option seems correct to me when I read the Stata help � it adjusts 
the SEs for intragroup correlation which is what I want. I just want to 
check if it is right. Thanks

Meena


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