1. Interpretation of PROC MIXED Output
Difference of least square means
Least square Mean
Type III fixed effects
Data Snapshot
proc mixed data=sasdata order=data;
class pt trtp avisit;
model chg = base trtp avisit trtp*avisit/solution;
repeated avisit /type=un subject=pt;
lsmeans trtp*avisit / pdiff cl;
ods output tests3=test3 lsmeans = lsmeans diffs =
diffs;
run;
Code
Proc
Mixed
Fit Fixed & Random
effect model
Repeated Measures
Desired output
 To decide which values
should be considered for
desired output from different
part of Proc Mixed outputs .
 Read and interpret values
from Proc Mixed output.
Conclusion :
Treatments AA11 and Placebo
work equally.