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 the
> 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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