Thanks Anderson,
therefore, your suggestion is to use the Single-Group- Three Measurements ("Tripled T-Test") and not ANOVA?
And... sorry last question, is there any difference if I use the tripled-T-test or different paired t-tests?
Maurizio
> Hi Maurizio,
> The example that you really need is this: https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/GLM#Single-Group.2C_Three_Measurements_.28.22Tripled_T-> Test.22.29.
> > You can in fact run this model in randomise: define one exchangeabiliy block per participant, and supply it with the option -e. That should be it.
> All the best,
> Anderson
>> On Tue, 3 Sep 2019 at 10:06, Maurizio B. <[log in to unmask]> wrote:
>> Hello FSL experts,
>> I would like to analyze DTI maps in a group of patients (N=41) scanned in three different time-points (baseline, after 24 months, after 48 months).
>> I would like to know if I have differences across the three time-points (Baseline vs TP1) (Baseline vs TP2), and (TP2 vs TP3).
>> I think that I have to use Repeated measures ANOVA but I am not sure.
>> I am also not sure about the matrices that I have to use for Randomise.
>> I have attached the matrices that I would like to use.
>> Please, can someone helps me to understand if repeated measures ANOVA and my matrices are fine?
>> Second question:
>> In the webpage of Repeated measures ANOVA (https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/Randomise/UserGuide#Repeated_measures_ANOVA) There >> is an example with 1-factor 4-levels (Repeated Measures). My case should be 1-factor 3-levels (Repeated Measures).
>> I do not understand why the three t-contrasts for the categorical effect are
>> 0 0 1 0 0
>> 0 0 0 1 0
>> 0 0 0 0 1
>> Therefore only for the first 3 levels (and not for all 4!).
>> Thanks,
>> Maurizio
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