Re: [Freesurfer] Analysis of rates or percent changes

2017-02-13 Thread Martin Reuter
nd Engineering > Ss. Cyril and Methodius University - Skopje, Republic of Macedonia > > From: Katarina Trojacanec > Sent: Thursday, February 2, 2017 2:46 PM > To: Freesurfer support list > Subject: Re: [Freesurfer] Analysis of rates or percent changes > > Hi Martin, &

Re: [Freesurfer] Analysis of rates or percent changes

2017-02-02 Thread Katarina Trojacanec
From: Katarina Trojacanec Sent: Monday, September 12, 2016 10:01:53 PM To: Freesurfer support list Subject: Re: [Freesurfer] Analysis of rates or percent changes Hi Martin, Thanks a lot. Best, Katarina Katarina Trojacanec, M.Sc. Teaching and research assistant

Re: [Freesurfer] Analysis of rates or percent changes

2016-09-12 Thread Katarina Trojacanec
<freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Martin Reuter <mreu...@nmr.mgh.harvard.edu> Sent: Monday, September 12, 2016 7:58:14 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Analysis of rates or percent changes Hi Katarina, different time spacing is OK

Re: [Freesurfer] Analysis of rates or percent changes

2016-09-12 Thread Martin Reuter
Hi Katarina, different time spacing is OK (not optimal, but OK). This 2-stage procedure first fits a line in each subject, independent on how many time points the subject has. Of course a linear fit from 4 time points will be more reliable than one from just 2 time points. This is not taken

[Freesurfer] Analysis of rates or percent changes

2016-09-12 Thread Katarina Trojacanec
Hi, I have a question about the analysis of rates or percent changes. I use data with available scans at baseline (TP1) and the 6-month (TP2), 12-month (TP3) and 24-month (TP4) follow-ups from ADNI dataset. An example of some of the data in the appropriate qdec table is given below: fsid