you can use the two stage model
On 1/15/2025 1:52 PM, Eszter Boros wrote:
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Dear FreeSurfer Team,
We are analyzing some longitudinal data (baseline [0], 6 months, 1
year, 1.5 years) using FreeSurfer 7.4.1.
We already analyzed two timepoints (basline[0] and 6 months) but now
we are trying to look at 4 timepoints in total.
I was wondering what the best way would be to do this. For the
longitudinal processing, should we create 3 bases/within-subject
templates between 0-6 months (this is already done), 0-1year,
0-1.5years), or between 0-6months, 6months-1year, 1year-1.5years. Or both?
Also, is it okay to correct/edit only the bases?
After the longitudinal processing, can we create a Longitudinal Table
and apply the two-stage model (LongitudinalTwoStageModel) method? Or
because of the 4 time points, we need to apply something else.
Thank you for your help in advance!
All the best, Eszter
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