Mahinda Yogarajah wrote:
> Hi Doug,
>
> Thanks for the response. I have had a read about demeaning on the
> forum. I had a couple of questions:
>
> 1) If I want to include age as well as ICV as nuisance variables in a
> DODS analysis comparing thickness between patients and controls,
> should
Hi Doug,
Thanks for the response. I have had a read about demeaning on the forum. I
had a couple of questions:
1) If I want to include age as well as ICV as nuisance variables in a DODS
analysis comparing thickness between patients and controls, should I demean
(+ ? normalise) the age as well as
Hi Mahinda, try demeaning and normalizing the ICV values (ie, subtract
the mean and divide by the stddev).
doug
Mahinda Yogarajah wrote:
> Dear Experts,
>
> I am trying to carry out a simple 2 group (conrol and patient)
> analysis with ICV as nuisance factor, and thickness as the dependent
> va
Dear Experts,
I am trying to carry out a simple 2 group (conrol and patient) analysis
with ICV as nuisance factor, and thickness as the dependent variable.
However whenever I include ICV (inputed by following the qdec tutorial and
the generate stats table) I get the following output and error mes
