> All the best,
> Jodie
>
>
>
> Message: 6
> Date: Fri, 09 May 2014 16:52:25 -0400
> From: Martin Reuter
> Subject: Re: [Freesurfer] nonlinear models in longitudinal analysis
> To: freesurfer@nmr.mgh.harvard.edu
> Message-ID: <536d4009.7030...@nmr.mgh.harvard.edu>
0.4
Day2 base 0.4 0.4
Day3 base 0.8 0
All the best,
Jodie
Message: 6
Date: Fri, 09 May 2014 16:52:25 -0400
From: Martin Reuter
Subject: Re: [Freesurfer] nonlinear models in longitudinal analysis
To: freesurfer@nmr.mgh.harvard.edu
Message-ID: <536d4009.7030...@nmr.mgh.harvard
Hi Jodie,
'years' should contain the real time between time points (usually,
unless you have test-retest where time is irrelevant, or different task
that can be ordered as you like). For what you are trying to do you
should use linear mixed effects models with a piecewise linear setup.
This wi
Dear Freesurfer experts,
I am attempting to do a longitudinal analysis of cortical thickness with 3
timepoints. So far, I have successfully completed the analysis for
long_mris_slopes comparing timepoint 1 to timepoint 2, timepoint 2 to timepoint
3, and a linear increase for timepoint 1 to 2 to
