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
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