Thanks for the quick reply!
So if I understand correctly, the power of say the controls vs. diabetes
(indeed it is type 2 diabetes) comparison is constrained by the sample size
of the obese group?
2016-10-13 11:02 GMT-03:00 Bruce Fischl <fis...@nmr.mgh.harvard.edu>:
> Hi Eelco
> it isn't really a question of whether our implementation is senstitive to
> this. It's that in general your power will be constrained by the size of
> the smaller group (I assume this is Type 2 diabetes by the way).
> On Thu, 13 Oct 2016, Eelco van Duinkerken wrote:
> > Hi all,
> > I am using FS with data from 2 different studies that were acquired on
> > same MRI-machine with the same T1 and FLAIR sequences. Unfortunately, the
> > group sizes are not very balanced, with 31 controls, 16 obese and 32
> > diabetes patients.
> > Is the GLM for thickness used in FS very sensitive to this unequal group
> > size?
> > Thanks for the help,
> > Eelco
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Eelco van Duinkerken, PhD
Pontifícia Universidade Católica | Department of Psychology |
R. Marquês de São Vicente 225 | Gávea, Rio de Janeiro - RJ | CEP 22451-900
| Brasil |
E-mail: e.vanduinker...@vumc.nl | Phone: +55-21-35271855 |
VU University Medical Center | Department of Medical Psychology |
De Boelelaan 1117 | 1081 HV | Amsterdam | The Netherlands
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