Thank you so much Doug! It worked! I was just wondering which value I should report as the correlation coefficient of my analysis.
This is the output I got: # ColHeaders Index SegId NVoxels Volume_mm3 StructName Mean StdDev Min Max Range 1 -4 20373 20373.0 Seg-004 -0.1596 0.0468 -0.3134 -0.1017 0.2117 Should I report the mean (-0.1596) or the min (-0.3134)? Thanks again Try something like mri_segstats --i pcc.mgh --seg cluster.ocn.mgh --excludeid 0 --sum cluster.pcc.dat 2017-04-08 1:35 GMT+01:00 tom parker <tomparker...@gmail.com>: > Hi Doug, > > Thank you for your answer! > > It would be great if you could send me some instructions. > > Thanks for the help! > > Douglas N Greve > <http://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=from:%22Douglas+N+Greve%22> > Thu, > 06 Apr 2017 13:32:07 -0700 > <http://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=date:20170406> > > I guess you could average it over space (eg, over a cluster). Let me > know if you want instructions. Otherwise, I'm not sure what to say. > > > > 2017-04-04 11:49 GMT+01:00 tom parker <tomparker...@gmail.com>: > >> Hi Doug, >> >> Thanks! I realize now I didn't explain myself properly. >> >> I need one single R value for the correlation analysis I made, similarly to >> when I correlate two variables with Pearson's R in a statistical package. >> >> I have a referee asking me to put it on a table with the freesurfer results. >> Is there a way to get a single average R value from the pcc.mgh file? >> >> Thank you so much! >> >> >> Douglas Greve >> <http://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=from:%22Douglas+Greve%22> >> Mon, >> 03 Apr 2017 18:46:46 -0700 >> <http://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=date:20170403> >> Each vertex is a correlation value. >> >> >> >> 2017-04-04 1:09 GMT+01:00 tom parker <tomparker...@gmail.com>: >> >>> Thanks Doug! >>> >>> I have version 6 and got a pcc.mgh file. >>> >>> How can I get a correlation R value from this file? >>> >>> Thanks again >>> >>> Douglas N Greve >>> <http://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=from:%22Douglas+N+Greve%22> >>> Mon, >>> 03 Apr 2017 09:41:41 -0700 >>> <http://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=date:20170403> >>> >>> if you are using version 6, then it should have produced a file called >>> pcc.mgh. This the partial pearson correlation coef. >>> >>> >>> >>> 2017-04-03 15:40 GMT+01:00 tom parker <tomparker...@gmail.com>: >>> >>>> Dear Freesurfers, >>>> >>>> I made some correlations between cortical thickness and age in qdec. >>>> >>>> Is it possible to get the correlation coefficient value of this >>>> analysis? >>>> >>>> I just need to put it in a table with the significant results. >>>> >>>> Thank you so much! >>>> >>> >>> >> >
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