I am running a repeated measures in Proc Mixed using a repeated statement. I also have a random effect that I would like to include. When I run the model without the random effect, my den. df reflects the number of subjects (as it should). However, as soon as I add in a random statement, my df nearly triples. Why? Is there a way to include a random effect with a repeated measures that doesn't inflate my df?
Here is the code with both the random and repeated statements:
proc mixed Data=Flux_Devo method=ml;
class id family trt stage;
model CO2lograte= temp|trt|stage mass_start;
random family;
repeated / type=un subject=id r;
run;
Thank you!
