Hi everyone,
Is it a problem if the subgroups specified by nesting in my RANDOM statement are unbalanced? For example, below you can see id(Diagnosis) where there are 5 diagnoses but the number of ids (patients) with each diagnosis range from 8 to 16 (e.g. 8 patients have diabetes, 16 patients have cancer, 10 patients have epilepsy). Do I need to adjust for this in my syntax? If so, what syntax do I need to add?
PROC GLIMMIX DATA=CONC_long;
CLASS Time (ref= '1') Diagnosis;
MODEL LoHiSev = Composite / dist=binomial link=logit solution;
RANDOM intercept / subject=id(Diagnosis) type=CS;
OUTPUT out=preAUCnested1 pred=xbeta pred(ilink)=predprob pred(ilink noblup)=fix_predprob;
RUN;
Thank you, SAS Community!
Best,
MeasuringHealth
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