Re: [Freesurfer] advice/question regarding your LME toolbox for freesurfer

2015-04-27 Thread jorge luis
24 de abril de 2015 20:33 Asunto: Re: [Freesurfer] advice/question regarding your LME toolbox for freesurfer #yiv8902951642 P {margin-top:0;margin-bottom:0;}Dear Jorge, Just wondering if you had any thoughts on the below? Particularly point 1 - that is, how to assess whether linear or

Re: [Freesurfer] advice/question regarding your LME toolbox for freesurfer

2015-04-24 Thread Sarah Whittle
...@nmr.mgh.harvard.edu] on behalf of Sarah Whittle [swhit...@unimelb.edu.au] Sent: Tuesday, 21 April 2015 7:15 AM To: jorge luis Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] advice/question regarding your LME toolbox for freesurfer Thanks Jorge! In our case, at step 4, an F-test does show

Re: [Freesurfer] advice/question regarding your LME toolbox for freesurfer

2015-04-20 Thread Sarah Whittle
Thanks Jorge! In our case, at step 4, an F-test does show significant evidence for a quadratic term, but not across the whole brain. We have a strong hypothesis that there should be a time effect (linear or quadratic) across most of the brain, and it makes sense that some regions will show line

Re: [Freesurfer] advice/question regarding your LME toolbox for freesurfer

2015-04-20 Thread jorge luis
Hi Sara For those analysis Iwent through the following steps: First considered afull model for both the mean and the covariance and selected the bestmodel for the covariance: 1- Fitted a fullmodel (model1) including intercept, time and time squared as bothfixed effects and random effects.2- Sepa