Use DODS to test whether the slopes differ between the three groups. If
they do not, then use DOSS.
doug
On 1/11/14 5:03 PM, amirhossein manzouri wrote:
Thanks Doug for the prompt reply. I just want to if DODS is ok to be
used in my case or I should use DOSS?
On Jan 11, 2014 10:56 PM, "Douglas Greve" <gr...@nmr.mgh.harvard.edu
<mailto:gr...@nmr.mgh.harvard.edu>> wrote:
HiAmirhossein, don't use the DOSS feature in QDEC because there is a bug
such that
it does not always do the right thing. Sorry, I sent out an email
about 8mo ago on this, but it is not easy to let people know about a bug
once the bug is out there. If you want to use DOSS, use mri_glmfit
directly. If you still have a question,
then repost to the list.
doug
On 1/11/14 1:22 PM, amirhossein manzouri wrote:
Hello all,
I am using Qdec (version5.1) to study cortical thickness
differences between groups having Age as nuisance covariate. I do
not have assumption if the groups are different or not . Using
DODS and DOSS gives me completely different results. We have
three groups including 41, 39, and 24 subjects in each.
My question is which results design matrix type is more reliable
for such a study? And also what if I include a covariate of
interest in my comparison?
Thanks in advance,
Best regards,
Amirhossein Manzouri
The information in this e-mail is intended only for the person to
whom it is
addressed. If you believe this e-mail was sent to you in error and
the e-mail
contains patient information, please contact the Partners
Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to
you in error
but does not contain patient information, please contact the
sender and properly
dispose of the e-mail.
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.
