Re: [Freesurfer] one group in RepeatedMeasuresAnova or PairdAnalysis
Dear Douglas Greve, Thank you for your reply. I'm very sorry that I can't directly reply on the web, so I had to be sent a new email.
I still have a question for your answer “ Note that for the paired-diff, you need to subtract tp1 from tp2 manually and pass the result to mri_glmfit.” Would you please describe some more detail for me? And in the paired analysis, if I have no covariates, what the mean.mtx should be?
I'm terribly sorry, and thanks again. Livia Liu
2017-03-07 20:54 GMT+08:00 刘丽 livialiu333@gmail.com:
Dear FS Experts,
I have one group to compare the difference between their preoperative and postoperative after one month. I followed http://surfer.nmr.mgh.harvard. edu/fswiki/FsTutorial/LongitudinalTutorial to process data. I run these command in number 2.* Longitudinal Image Processing*：
recon-all –s sub01_MR1 –all / recon-all –s sub01_MR2 –all
recon-all -base sub01 -tp sub01_MR1 -tp sub01_MR2 –all
recon-all -long sub01_MR1 sub01 –all / recon-all -long sub01_MR2 sub01
–all
I am confused about choosing which kind of analysis in the page http://surfer.nmr.mgh.harvard.edu/fswiki/LongitudinalStatistics And I tried http://surfer.nmr.mgh.harvard.edu/fswiki/RepeatedMeasuresAnova
The “rmanova.fsgd”:
GroupDescriptorFile 1
Class sub01
Class sub02
…
Variables TP1-vs-TP2
Input sub01_MR1 sub01 1
Input sub01_MR2 sub01 -1
Input sub02_MR1 sub02 1
Input sub02_MR2 sub02 -1
…
“tp1-va-tp2.mtx”: 0 0 … 1
And I look in one mail in the list, say “one group to use Paird Analysis easier”. http://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis
“pairs.fsgd”:
GroupDescriptorFile 1
Class Main
Input sub04_MR1 Main
Input sub04_MR2 Main
Input sub05_MR1 Main
Input sub05_MR2 Main
…
“paird-diff.fsgd” :
GroupDescriptorFile 1
Class Main
Variables Age
Input sub04pair Main 24
Input sub05pair Main 27
…
“mean.mtx”: 1 0
My question：
- Are the above several files I set up correct？？There are inconsistent
results in them… So which one should I choose??
- I found the increase or decrease a subjects had a great influence on
the analysis result, how to filter the participants??
Looking forward to reply, and thanks very much!
Kind regards,
Livia