i think you would still run into the same probem
On 07/11/2017 12:15 PM, Yann Ying Chye wrote:
> Thanks for your reply,
>
> I have a follow up on my first question - if however I was not looking
> for a main effect of gender, but for the main effect of something else
> (e.g. diagnosis), will
Thanks for your reply,
I have a follow up on my first question - if however I was not looking for
a main effect of gender, but for the main effect of something else (e.g.
diagnosis), will it then be ok to include the unbalanced group (i.e.
A-male), to control for gender?
Thanks!
Regards
Yann
On 7/7/17 1:58 PM, Yann Ying Chye wrote:
Dear FreeSurfer mailing list,
I've got two questions regarding the freesurfer GLM analysis.
1. I am trying to run mri_glmfit on the cortical thickness of a
dataset that has a few interacting factors of unequal levels.
For example, my dataset may have
Dear FreeSurfer mailing list,
I've got two questions regarding the freesurfer GLM analysis.
1. I am trying to run mri_glmfit on the cortical thickness of a dataset
that has a few interacting factors of unequal levels.
For example, my dataset may have groups A, B, C, and D. Within the groups,
Hello group,
I am a new user of Freesurfer and just learning to process data
through the pipeline. Sorry if this is an amateur question. I was just trying
to look at cortical thickness differences between a patient group and a control
group. So, my fsgd file would just list the input
Hi Koushik, it's very hard to diagnose these problems with out more
detailed information (eg, the command line, the FSGD file, and the
contrast). Send those along and I'll see if I can figure out what went
wrong.
doug
Govindarajan, Koushik Athreya wrote:
Hello group,
I am a new
From: Douglas N Greve [gr...@nmr.mgh.harvard.edu]
Sent: Friday, December 23, 2011 11:20 AM
To: Govindarajan, Koushik Athreya
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] GLM question
Hi Koushik, it's very hard to diagnose these problems with out
0 0 0 -1 1]/2
Is this correct?
Thank you very much in advance,
Gabriel
Date: Wed, 9 Mar 2011 22:22:18 -0500
From: gr...@nmr.mgh.harvard.edu
To: gabriel...@hotmail.com; freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] glm question
two row contrast matrix
To: gabriel...@hotmail.com; freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] glm question
two row contrast matrix
[1 1 -1 -1 0 0]
[1 1 0 0 -1 -1]/2
1st row test for a difference bet G1 and G2
2nd row tests for a difference bet G1 and G3
Note that you don't need to test G2
That contrast is wrong. I've updated this page with the correct contrast
https://surfer.nmr.mgh.harvard.edu/fswiki/Fsgdf6G0V
which is:
|+1 -1 0 -1 +1 0|
|+1 0 -1 -1 0 +1|
This is an F-contrast (two rows). The first row looks for a difference
between L and R for M and F (ie, a simple
, 9 Mar 2011 14:52:37 -0500
From: gr...@nmr.mgh.harvard.edu
To: gabriel...@hotmail.com
CC: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] glm question
That contrast is wrong. I've updated this page with the correct contrast
https://surfer.nmr.mgh.harvard.edu/fswiki/Fsgdf6G0V
:
Thanks a lot,
just one another question Doug,
how to set an ANOVA for group differences??'
Gabriel
Date: Wed, 9 Mar 2011 17:52:03 -0500
From: gr...@nmr.mgh.harvard.edu
To: gabriel...@hotmail.com; freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] glm question
Gabriel Go.Es. wrote
Dear FreeSurfer experts,
I'm doing some group analyses and I'm a
little stocked with this:
I have Six Groups (2 Factors, one with
three levels and the other one with two levels), and one covariate. I don't
know the rule for setting the contrasts for an ANOVA and for the interaction
between
Hello everybody
I'm wondering about how to perform an FDR correction using the glmfit on FS?,
I mean using command line if there is one;
And Could it be applied the same sentence to correct at cortex level and
clusters label, or need some special arguments on the command line for any of
Mehul Sampat wrote:
Hi FS folks,
I have a basic GLM question. I went through the tutorials online but I
was not sure and wanted to check with someone.
I am trying to compare the cortical thickness between a group of
patients (n = 166) and controls (n = 76).
For patients mean age is
Thanks Doug,
I have two follow-up questions.
1. I am using QDEC and my discrete variables are: (a) TYPE
(PATIENTS/CONTROLS) and (b) GENDER
I include age as a continous co-variate and then select all of the variable
before running the design.
I believe QDEC is generating the various possible
Hi FS folks,
I have a basic GLM question. I went through the tutorials online but I was
not sure and wanted to check with someone.
I am trying to compare the cortical thickness between a group of patients (n
= 166) and controls (n = 76).
For patients mean age is 49.8 +/- 9.1 and there are 55
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