Dear Freesurfer experts,
I am a beginner in using Freesurfer.
I was wondering if ICV should be treated as a potential confounder (such as age, education, chlorpromazine equivalents and duration of illness) in the statistical analysis of volumetric data/cortical thickness?
Thanks in advance! Dusan
Hi Dusan
we typically do this for volume and surface area, but not for thickness, which is relatively independent of ICV.
cheers, Bruce On Sat, 5 Nov 2011, Dusan Hirjak wrote:
Dear Freesurfer experts,
I am a beginner in using Freesurfer.
I was wondering if ICV should be treated as a potential confounder (such as age, education, chlorpromazine equivalents and duration of illness) in the statistical analysis of volumetric data/cortical thickness?
Thanks in advance!
Dusan
Dear Freesurfer experts,
I created a data table with 25 subjects, 3 discrete and 6 continuous factors. Then I tried to load my data table in qdec. However, an "error loading the data table" occured. I received an automatic notice generated at the end of the terminal as following, "This line (my last subject and his data) did not appear to end with a newline"
How can I fix this problem and visualize my results in qdec? .
Thanks in advance!
Dusan
open the table in a text editor and add a line at the end of the file.
n.
On Tue, 2011-11-08 at 15:11 -0800, Dusan Hirjak wrote:
Dear Freesurfer experts,
I created a data table with 25 subjects, 3 discrete and 6 continuous factors. Then I tried to load my data table in qdec. However, an "error loading the data table" occured. I received an automatic notice generated at the end of the terminal as following, "This line (my last subject and his data) did not appear to end with a newline"
How can I fix this problem and visualize my results in qdec? .
Thanks in advance!
Dusan
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Dear Freesurfer experts,
I opened the table (qdec.table.dat) in a text editor and add a line at the end of the file. Then I tried to open the data table again. However, I received an automatic error message again:
Number of columns: 286 fsid: column: 1 Number of factors: 285 Number of subjects: 0 ERROR: OdecDataTable::Load: number of subjects = 0 Error loading the data table.
How should I solve this problem?
Thanks in advance!
Dusan
Dear Freesurfer experts,
I am a beginner in using Freesurfer.
I was wondering how "straight p-values" (and not -log(10)p value) of a correlation analysis/comparison between cortical thickeness and age, CPZ, duration of illness etc. could be displayed on a color bar using "qdec"?
Thanks in advance! Dusan
Hi Dusan, I don't think it is possible. You would have to convert the sig file into a p-value file, then load it in freeview or tksurfer. doug
Dusan Hirjak wrote:
Dear Freesurfer experts,
I am a beginner in using Freesurfer.
I was wondering how "straight p-values" (and not -log(10)p value) of a correlation analysis/comparison between cortical thickeness and age, CPZ, duration of illness etc. could be displayed on a color bar using "qdec"? Thanks in advance!
Dusan
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
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Bruce Fischl -
Douglas N Greve -
Dusan Hirjak -
Nick Schmansky