External Email - Use Caution No problem, thanks! So I shall send an email only to freesurfer or would it fine if I put you in cc?
With regards Vittal On Mon, Nov 30, 2020 at 4:25 PM Diers, Kersten /DZNE <kersten.di...@dzne.de> wrote: > Hi Vittal, > > Sorry, I can only help on the public freesurfer list, so I suggest moving > the discussion back to there. > > Best, > > Kersten > > Am 27.11.2020 um 18:21 schrieb vittal korann <vittalkor...@gmail.com>: > > Hi Kersten > > Thank you for kind response. > > I think we need to talk about the design matrix X first (sorry, I did not > look at your xlsx file; I think it's probably better to send simple csv > files if at all). > I attached longitudinal data in csv format. > > Besides the covariates that you mention, the matrix needs to contain an > intercept, a variable for ?time?, a variable for ?group? (assuming you have > a control group also), and a group-by-time interaction term in order to > asses differential change over time (again, if you have a control group). > I do not have a control group. Right now I have only schizophrenia > patients who underwent 2 scans: first is baseline and second one is after 3 > months of yoga therapy. Wish to know the how can I proceed with my availabe > data. > > Just to make sure: ?age? should be ?age at baseline? (i.e. constant across > time per subject), otherwise it will be confounded with time. > Yes, I used same across the study. > > Could you review (and possibly adapt) your design matrix X with respect to > which columns it contains, and write it in the reply? > I tried but couldn't get there. > > Looking forward to your response. > > Thanks, > Vittal > <longitudinal_data.csv> > > > -- > Kersten Diers > Image Analysis Group (AG Reuter) > German Center for Neurodegenerative Diseases (DZNE) > B.1.114 | Building 99 | Venusberg-Campus 1 | 53127 Bonn | Germany > https://secure-web.cisco.com/17CxNooomAxq34c9Xe027kzVg8TPcPTffQaYq5Q3lzWgiMaBK-0ygMq9C_BNOEKSkszgTN3x5IIh_TUga1wvMHve091BTNVicmSSHcZT_N4ML9-lBtGD2X1afe6di0Gtho8FiWSYwoexynnLjbM8GHoh_6yCZ1DcS-3ZPF9pWBBoXZaob0NGuzUnWBRGy_CfLZpjU02qfuKoOSan-0la05K2Wj2gpH8rHy4H2mAH7S3171P58yzP0E6DjHo3Kd6dFnjm7tZD40Sq9cxSjubkyAA/https%3A%2F%2Fwww.dzne.de%2Fen%2Fsites%2Fbonn%2Fresearch-groups%2Freuter.html > Phone: +49 / 228 / 43302 - 381 > >
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