Thanks! From: <freesurfer-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu>> on behalf of "Yendiki, Anastasia" <ayend...@mgh.harvard.edu<mailto:ayend...@mgh.harvard.edu>> Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu>> Date: Thursday, March 16, 2017 at 10:29 PM To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu>> Subject: Re: [Freesurfer] Repost: tracula stats including NAs?
Hi Heidi - It's up to you. As long as the N of subjects at each point is included in the statistical test, this will adjust the corresponding p-value accordingly. Best, a.y ________________________________ From: freesurfer-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu> [freesurfer-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu>] on behalf of Jacobs H (NP) [h.jac...@maastrichtuniversity.nl<mailto:h.jac...@maastrichtuniversity.nl>] Sent: Friday, March 10, 2017 5:39 PM To: Freesurfer support list Subject: [Freesurfer] Repost: tracula stats including NAs? Hi FreeSurfer, I have analyzed my diffusion data using Tracula and combined the voxelwise diffusion measures across all subjects in one file (following the guidelines on the wiki). In this text file, I saw that for some of these voxels some people have NAs, so their tract is most likely shorter. I now would like to do t-tests for each voxel and plot these in freeview (as also suggested in the wiki). Would you recommend to only take those voxels that have a value in each subject to keep the number of subjects consistent at each voxel ? Look forward to your thoughts on this. Best wishes Heidi
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