You did not create the contrast matrix correctly. There needs to be a
column for each subject, then a column for time point1 and one for time
point 2. Use DOSS (defaults to DODS). Also, I think you could compute
tp2-tp1 if you wanted to (makes things easier).
On 12/14/2021 5:58 PM, std...@virgilio.it wrote:
External Email - Use Caution
*Hi list,*
*I have two groups undergoing two different treatments: one's
placebo , one's drug. Two timepoints, at baseline (T1, no treatment)
and at treatment (T2). 2x2 ANOVA, repeted measures has been applied
by following the guidlines and mailing list.*
*IMPORTANTLY, to compute tp2-tp1, as reported in the fsgd example,
is not an option to be done because we aiming to assess the
interaction between time and treatment.*
*Please chech the design matrix, the command line produces an error.*
*GroupDescriptorFile 1*
*Title 2x2_repeted_measures*
*Class Subject1 *
*Class Subject2 *
*Class Subject3 *
*Class Subject4 *
*Class Subject5 *
*Class Subject6 *
*Class Subject7 *
*Class Subject8 *
*Class Subject9 *
*Class Subject10*
*Class Subject11*
*Class Subject12*
*Class Subject13*
*Class Subject14*
*Class Subject15*
*Class Subject16*
*Class Subject17*
*Class Subject18*
*Class Subject19*
*Class Subject20*
*Class Subject21*
*Class Subject22*
*Class Subject23*
*Class Subject24*
*Variables tp1-vs-tp2.drug tp1-vs-tp2.plb*
*Input CODE01_tp1 Subject1 1 0*
*Input CODE02_tp1 Subject2 1 0*
*Input CODE03_tp1 Subject3 1 0*
*Input CODE05_tp1 Subject4 1 0*
*Input CODE06_tp1 Subject5 0 1*
*Input CODE07_tp1 Subject6 0 1*
*Input CODE09_tp1 Subject7 0 1*
*Input CODE10_tp1 Subject8 1 0*
*Input CODE11_tp1 Subject9 1 0*
*Input CODE12_tp1 Subject10 0 1*
*Input CODE13_tp1 Subject11 0 1*
*Input CODE14_tp1 Subject12 1 0*
*Input CODE15_tp1 Subject13 1 0*
*Input CODE16_tp1 Subject14 1 0*
*Input CODE17_tp1 Subject15 0 1*
*Input CODE18_tp1 Subject16 1 0*
*Input CODE19_tp1 Subject17 0 1*
*Input CODE20_tp1 Subject18 0 1*
*Input CODE21_tp1 Subject19 0 1*
*Input CODE22_tp1 Subject20 1 0*
*Input CODE23_tp1 Subject21 0 1*
*Input CODE24_tp1 Subject22 0 1*
*Input CODE25_tp1 Subject23 1 0*
*Input CODE26_tp1 Subject24 0 1*
*Input CODE01_tp2 Subject1 -1 0 *
*Input CODE02_tp2 Subject2 -1 0 *
*Input CODE03_tp2 Subject3 -1 0 *
*Input CODE05_tp2 Subject4 -1 0 *
*Input CODE06_tp2 Subject5 0 -1 *
*Input CODE07_tp2 Subject6 0 -1 *
*Input CODE09_tp2 Subject7 0 -1*
*Input CODE10_tp2 Subject8 -1 0 *
*Input CODE11_tp2 Subject9 -1 0 *
*Input CODE12_tp2 Subject10 0 -1*
*Input CODE13_tp2 Subject11 0 -1*
*Input CODE14_tp2 Subject12 -1 0 *
*Input CODE15_tp2 Subject13 -1 0 *
*Input CODE16_tp2 Subject14 -1 0 *
*Input CODE17_tp2 Subject15 0 -1*
*Input CODE18_tp2 Subject16 -1 0 *
*Input CODE19_tp2 Subject17 0 -1*
*Input CODE20_tp2 Subject18 0 -1*
*Input CODE21_tp2 Subject19 0 -1*
*Input CODE22_tp2 Subject20 -1 0 *
*Input CODE23_tp2 Subject21 0 -1*
*Input CODE24_tp2 Subject22 0 -1*
*Input CODE25_tp2 Subject23 -1 0 *
*Input CODE26_tp2 Subject24 0 -1*
*a) groupxtime.mtx 0 0 1 -1*
*b) tp1-vs-tp2.Mod.mtx 0 0 1 0*
*c) tp1-vs-tp2.Plb.mtx 0 0 0 -1*
*mri_glmfit --y ces.nii.gz --wls cesvar.nii.gz --surface fsaverage
rh --glmdir repeted_measures.wls --nii.gz --fsgd
Repeted_measure.fsgd --C Tp1-vs-Tp2.Mod.mtx --C Tp1-vs-Tp2.Plb.mtx
--C groupxtime.mtx*
*ERROR: dimension mismatch between X and contrast Tp1-vs-Tp2.Mod.mtx
X has 72 cols, C has 4 cols*
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________
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 Mass General Brigham
Compliance HelpLine at http://www.massgeneralbrigham.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.
Please note that this e-mail is not secure (encrypted). If you do not wish to
continue communication over unencrypted e-mail, please notify the sender of
this message immediately. Continuing to send or respond to e-mail after
receiving this message means you understand and accept this risk and wish to
continue to communicate over unencrypted e-mail.
