Dear Rajnish,
it's not strictly necessary to consider TIV in long. designs. There seem to be some strange values for TIV probably and this might cause that strange behaviour.
Best,
Christian
On Tue, 12 May 2020 17:55:43 +0530, Rajnish K Gupta <[log in to unmask]> wrote:
>Dear Experts,
>I am performing VBM analysis to see the GMV changes at 2-time points (pre
>to post) in a single group. For that, I performed a longitudinal analysis
>as per the CAT12 manual. When I performed statistical analysis with
>Flexible Factorial design, the output spm.mat file seems fine. But when I
>estimated it, the design matrix output doesn't seem correct (screenshots
>attached).
>
>Any possible explanation will be appreciated.
>--
>Regards,
>*RAJNISH K GUPTA*
>
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