Update: S×F vari­­ance test [Regulatives / Guidelines]

posted by kumarnaidu – Mumbai, India, 2014-12-09 07:48 (3397 d 01:07 ago) – Posting: # 14031
Views: 11,948

Hello friends, I am getting below output using this SAS code. I dont know why I am getting value 0 (I think it is a rounded value) for FA(2,2).
Please guide me.

proc mixed data=sample method=reml ITDETAILS CL=WALD ALPHA=0.1;
class Subject sequence period formulation;
model logDATA=sequence period formulation/ddfm=satterth;
random formulation/type=FA0(2) subject=subject G;
repeated/group=formulation subject=subject;
lsmeans formulation/pdiff cl alpha=0.1;
estimate 'T-R' formulation 1 -1 /CL ALPHA=0.1;
ods output Estimates=BLUEUN CovParms=COVUN AsyCov=ascovun;
run;


Dependent  Parameter                   Estimate
Ln(data)   FA(1,1)                     0.8530
Ln(data)   FA(1,2)                     0.8284
Ln(data)   FA(2,2)                     0
Ln(data)   Res(Formulation R*Subject)  0.2021
Ln(data)   Res(Formulation T*Subject)  0.1174

Kumar Naidu
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