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). > > cheers > Bruce > > > 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 > > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > The information in this e-mail is intended only for the person to whom it > is > addressed. If you believe this e-mail was sent to you in error and the > e-mail > contains patient information, please contact the Partners Compliance > HelpLine at > http://www.partners.org/complianceline . If the e-mail was sent to you in > error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. > > -- 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 | http://lattes.cnpq.br/7180895567820901 & VU University Medical Center | Department of Medical Psychology | De Boelelaan 1117 | 1081 HV | Amsterdam | The Netherlands
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