09-26-2013 09:54 AM
Could anyone help me to implement the correct GEE model in sas?!
I have a dataset of measurments on patients from two treatment arms at different times. I would like to compare at the endpoint the change from baseline between the two groups.
Each patient of a treatment arm has two scores from each eye (for instance: patient X from group A has a score 7 from the left eye and 6.8 for the right eye at baseline ).
How can I write the adequate model that includes the correlation due to the two scores from a patient?!
09-27-2013 09:07 AM
There are examples in the doc and in papers on using PROC GENMOD to analyze GEE models. Perhaps some of these will help.
or the doc