: Re: [Freesurfer] longitudinal statistics LGI
Hi Jon
Your contrast matrix depends on the hypothesis you want to test. Contrast
matrices for lme are specified in the same way as for the General Linear Model.
Nothing different here.
It's a matrix of L rows where L>=1 and the same n
pulation parameters) in your
model.
Best-Jorge
De: Jon Alan Wieser
Para: jorge luis
CC: "freesurfer (freesurfer@nmr.mgh.harvard.edu)"
Enviado: Domingo 28 de diciembre de 2014 10:23
Asunto: Re: [Freesurfer] longitudinal statistics LGI
#yiv9096281212 #yiv9096281212 --
isdahl Medina ;
"alicia.thomas@gmail.com"
Enviado: Martes 16 de diciembre de 2014 15:24
Asunto: Re: [Freesurfer] longitudinal statistics LGI
Jorge,
We are interested in examining the impact of cannabis exposure (time-varying
continuous variable) on local gyrification index over 3 ti
edina; alicia.thomas@gmail.com
Subject: Re: [Freesurfer] longitudinal statistics LGI
Hi Jon
We recommend to order the columns of your design matrix in the following way:
First, the intercept term (which is a column of ones); second, the time
covariate; third, any time-varying covariate
ew to longitudinal LME analyses.
Thanks again
Jon
From: jorge luis
Sent: Wednesday, December 17, 2014 9:25 AM
To: Freesurfer support list; Jon Alan Wieser
Cc: Krista Lisdahl Medina; alicia.thomas@gmail.com
Subject: Re: [Freesurfer] longitudinal statistics LG
viado: Martes 16 de diciembre de 2014 15:24
Asunto: Re: [Freesurfer] longitudinal statistics LGI
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effects
as explained above.
-Jorge
De: Jon Alan Wieser
Para: "freesurfer (freesurfer@nmr.mgh.harvard.edu)"
Enviado: Martes 2 de diciembre de 2014 12:29
Asunto: [Freesurfer] longitudinal statistics LGI
HI freesurfer experts
I have a question
thebest subset of random effects as explained
above.
-Jorge
De: Jon Alan Wieser
Para: "freesurfer (freesurfer@nmr.mgh.harvard.edu)"
Enviado: Martes 2 de diciembre de 2014 12:29
Asunto: [Freesurfer] longitudinal statistics LGI
HI freesurfer
experts
I have a question
HI freesurfer experts
I have a question about the statistical analysis of longitudinal data. we have
run our data through the longtudinal data processing stream.
We are looking at the longitudinal effect on the LGI data
We are looking at doing a Mixed effects analysis.our main Model Fac
