Dear SPMers,
I have a study where there are two groups of Patients , Z(n=8) and P(n=7), Each
subject had 2 scans (initial then 2 months later).
Zpre Ppre Zpost Ppost
With such small group sizes at this point in the study, is it still acceptable
to present fixed effects model results or must I run Random Effects as well?
I would like to test for the following contrasts:
Zpre vs Zpost
Ppre vs Ppost
Zpre vs Ppre
Zpost vs Ppost
Please advise me as to what would be the most acceptable way to analyze this
data set using spm99.
thank you for your time,
Maria
|