Hi Matthew,
you are right - both options are similar, but not the same. The right
place to enter multiple regression covariates is under "multiple
regression". Entering them in the "general" section would not hurt, but
there are some options offered which are not useful in a multiple
regression setting.
Volkmar
On Sun, 7 Jan 2007, Matthew Shane wrote:
> Hello SPMers,
>
> I'm performing multiple regression on VBM data in SPM5. There appear to be
> two places where I can add covariates to my model. One under the 'multiple
> regression' subheading, and one later on in the design specification. The
> help with SPM5 suggests that there isn't any difference between these two
> covariate options...but my parsimonious brain believes that if this were
> true there would only be one option.
>
> Does anyone know the difference between the models that result from adding
> covariates each way?
>
> Thanks,
>
> Matt
>
> Matt Shane
> Post-doctoral Fellow
> Olin Neuropsychiatric Research Center
> Hartford, CT
>
>
--
Volkmar Glauche
-
Department of Neurology [log in to unmask]
Universitaetsklinikum Freiburg Phone 49(0)761-270-5331
Breisacher Str. 64 Fax 49(0)761-270-5416
79106 Freiburg http://fbi.uniklinik-freiburg.de/
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