Dear list,
we have several difficulty to understand how I should build fsdg file and we
are worried to produce correct results.
On FS site, it is not available an example if we would look for differences
among 4 different groups (A, B, C, D; 4 Groups - One Factor/Three Levels - No
Covariates).The proposed design with 2 levels and 2 factors is no helpful in
our case.
We have 4 groups (1 factor and 4 levels, no covariates) and we our hypothesis
(in term of impaiment) is A<B<C<D.
Which should be the group.effect.mtx?How should we look to difference between
Group1, Group2, Group3 and Group4?
Should we opt for G1+G3 vs G2+G4 or G1+G2 vs G3+G4? Other option?
Please may you argue a rationale?
e.g. Looking your example on three Groups (One Factor/Three Levels), No
Covariates, we wonder why if Normals==MCI AND Normals==AD, then it MUST be the
case that MCI==AD?
We aim at assess differences by using more complex design (4x2x4), including 4
different structures, looking at right and left structures and having 4 levels
(4 different groups).
How should we do, please?
Thank you very much.
Best regards
Stefano
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