Re: [Freesurfer] Matched analysis with 2 controls 1 case weighting

2018-07-25 Thread Douglas Greve
On 7/24/18 1:56 PM, Dowling, Kevin Francis wrote: Hi Doug, Thank you very much for your reply and my apologies for this belated response. The two approaches you mentioned were the only ones we could think that might work for a DV like cortical thickness. That being said, we were originally th

Re: [Freesurfer] Matched analysis with 2 controls 1 case weighting

2018-07-24 Thread Dowling, Kevin Francis
Hi Doug, Thank you very much for your reply and my apologies for this belated response. The two approaches you mentioned were the only ones we could think that might work for a DV like cortical thickness. That being said, we were originally thinking of a repeated measures anova. However, (an

Re: [Freesurfer] Matched analysis with 2 controls 1 case weighting

2018-07-16 Thread Douglas N. Greve
There is nothing to plug and play. I'm not even sure about the theory, but I'd guess you'd use something like a repeated measures anova or simply average the two controls together and do a simple paired test. Do you know what the theory would be behind your statitical test? On 07/09/2018 01:27

[Freesurfer] Matched analysis with 2 controls 1 case weighting

2018-07-09 Thread Dowling, Kevin Francis
Hello Freesurfer Experts, I'm writing with a quick question about matched analysis. We have a cohort of MRI data collected such that there are two controls for each case, and these 2 controls are each matched to a specific case using a propensity score algorithm (~400 subjects total). For our