GEE procedure with 3 levels

[iuri_leite]

Dear all,

I ran a logistic GEE model with repeated visits nested within individuals. However, I would also like to account for potential correlation among individuals from the same study site. Therefore, I would like to know whether this can be implemented using GEE. I have already fitted the model using a multilevel approach.

Thank you in advance.

Best regards,

Iuri

[SAS_Rob]

This usage note should address your question

24200 - When to use a nested effect in the SUBJECT= option of GENMOD's REPEATED statement