I am running a repeated measures analysis on some psychosocial measure
using PROC MIXED. My experiment design is very basic in the sense that
I only have one treatment group, no control group, and three
timepoints. I would like to get a plot of the *group* trajectory of
the (predicted) measure of interest across time. Any ideas on how to
get that trajectory?
I know how to get the *individual* predicted values using the
OUTPRED=pred option in proc mixed. But I am not sure there is an
option for the *group* predicted value. So I thought I could average
the individual prediction within the group and use proc gplot, but
there must be a better way.
Thanks in advance for your help.