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HELP! My good old SPSS/PC would have easily run a repeated measures
analysis with 1 outcome measured at 4 time points in 3 conditions (see
model A below). BUT, I cannot figure out how to get the MIXED command to
run the interaction of CONDITION and TIME with each effect being compared
to the value of OUTCOME at time 1 (see my attempt in Model B).
Model A)
MANOVA
OUTCOMET1 OUTCOMET2 OUTCOMET3 OUTCOMET4 BY CONDITION (1,3)
/wsfactor time (4)
/contrast (CONDITION) special (1 1 1 -1 1 0 -1 0 1)
/contrast (TIME) special (1 1 1 1 -1 1 0 0 -1 0 1 0 -1 0 0 1)
/PRINT = par (EST)
/design.
Model B)
MIXED
OUTCOME by CONDITION assesspt
/METHOD = ML
/PRINT = G SOL LMATRIX testcov
/FIXED = CONDITION ASSESSPT CONDITION*ASSESSPT
/test = 'CONTRASTS of condition' CONDITION 1 1 1;
CONDITION -1/2 1/2 0 ; CONDITION -1/2 0 1/2
/TEST= 'SLOPE' ASSESSPT 1 1 1 1; ASSESSPT -1/2 1/2 0 0;
ASSESSPT -1/2 0 1/2 0 ; ASSESSPT -1/2 0 0 1/2
/RANDOM INTERCEPT | SUBJECT(CLINid).
Can anyone help??
Thanks.
Charla Three
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