Dear List
I'm wondering about the proper way to set up an analysis that includes site as a regressor, and whether this is possible in qdec?
My qdec.table.dat file looks like this.
fsid group site 1 grp1 1 2 grp2 2 3 grp2 2 4 grp1 3 .... and so on
I then have .level files for group which has 2 levels, and site which has 7 levels.
The type of question I want to answer for example is: Is there a difference between grp1 and grp2 regressing out the effects of site?
Is this possible with Qdec? When I select the group variable on the design tab the analysis results shows the question of the form: Is there a difference between grp1 and grp2, but there is no mention of regressing out the site effect. Looking at the design matrix X.mat it only includes 2 columns which isn't right.
If I select both group and site on the design page I get an error.
Do I need to put together an FSGD file instead?
Thanks Darren