It is probably reasonable to correct for either TIV or total HTh volume.
Each of these tests a different hypothesis, so just know what hypothesis
you are testing.
On 1/12/2022 10:32 PM, Xiaotong Zhang wrote:
External Email - Use Caution
In the statistical analysis of the volume of th
External Email - Use Caution
In the statistical analysis of the volume of the hypothalamus_seg, since the
skull size of each person is different, it is necessary to exclude the
influence of head size, that is, to regress the total intracranial volume, such
as e TIV or sb TIV. I
On 5/7/17 1:16 PM, Laura Ferrero Montes wrote:
> Dear FS team,
>
> Thank you very much for your help. Just a few more questions.
>
> I want to perform a statistical analysis between two groups:controls
> and patients, using age and IQ as covariates. First I have to test if
> there is an interacti
Hi Joost,
Thank you for the information, that course would be great. However, I
would need to know if the analysis I am doing is OK to continue with
my study.
Joost Janssen escribió:
> Hi Laura,
>
> There is an upcoming FreeSurfer course in Barcelona this summer. Please
> contact Susana C
Dear FS team,
Thank you very much for your help. Just a few more questions.
I want to perform a statistical analysis between two groups:controls
and patients, using age and IQ as covariates. First I have to test if
there is an interaction between group and covariate using DODS.
My questions
Dear FS team,
Thank you very much for your help. Just a few more questions.
I want to perform a statistical analysis between two groups:controls
and patients, using age and IQ as covariates. First I have to test if
there is an interaction between group and covariate using DODS.
My questions
You can do the comparison, but you should know what you are doing. If
there is an interaction, then the question as to whether the two groups
differ in mean does not make sense without specifying the value of the
covariate where the difference is being measured. Just because a
software package
In the case that exists an interaction between group and covariate.
How a test comparing the mean volume of each group, like SPM does,
could be done? I do not want to know if the different groups evolve in
a different way with covariates, I only want to compare if groups have
different
You should first test whether there is an interaction between group and
covariate. If there is non, then you can keep the same FSGD file but run
it with DOSS (different offset, same slope). The "same slope" means that
the difference will be the same regardless of the value of the
covariate. You
Dear FS team,
I would like to make an analysis between a Patients Group and a
Control Group. This study is focused on identifying if there are
differences in volume between both groups. I want to regress out the
effects of gender, age and IQ.
My designed matrix has the following st
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