Can you send the fsgd file?
On 4/1/2022 3:28 PM, Laura Willers de Souza wrote:
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Hello FreeSurfer Developers,
I'm extracting beta values from some analyzes and I would like to
know if I'm extracting and interpreting these values correctly.
To extract the beta values I used this command:
mri_segstats --seg
lh.cortisol_CSF.glmdir/cortisol_CSF_slope/perm.th20.neg.sig.ocn.mgh
--i lh.cortisol_CSF.glmdir/beta.mgh --excludeid 0 --avgwf
lh.cortisol_CSF.beta.clusters.dat
The model consists of 1 group and 1 covariate.
I used the contrasts for intercept and slope.
The beta values extraction file contains 2 lines (image below).
* Would the first line be the beta value for the intercept and the
second line for the slope?
* Thus the glm equation for the 1st cluster would be: cortical
thickness = 2.57 - 0.12X + n
Is this correct?
Thanks in advance!
*Laura Willers de Souza *
Master Student in Biochemistry
Zimmer Lab - Federal University of Rio Grande do Sul
- Porto Alegre/RS - Brazil
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