Dear Kersten, Thanks a lot, it's really help. I have another question, after I got results that two group have significant, then how could I get direction?
Thanks, Lanbo On Tue, Mar 13, 2018 at 5:40 PM, Diers, Kersten /DZNE <kersten.di...@dzne.de > wrote: > Hello, > > On Di, 2018-03-13 at 21:48 +0100, lanbo Wang wrote: > > Dear Kersten, > > > > Thanks, I find it. And I have other questions: > > 1. The intercepts all set as one, so in this model it doesn't > > separate different subjects, or can say no individual subject change > > rate? > > If I understood correctly, the question is whether or not we can get > estimates for individual slopes across time? > > If so, then yes, that's possible - but I'd have to run an analysis > myself and look up how to do it exactly - I'll get back on this. > > > 2. Should we set age according to different timepoint, or just use > > baseline age? > > It's better to use age at baseline. > > One of the nice things of the LME is that it can separate the cross- > sectional effect of age (at baseline) and the longitudinal effect of > aging (=effect of time). So the aging effect is already incorporated > within the 'time since baseline' variable, which of course should also > be present in the model. > > Since it is difficult to estimate and interpret effects that are very > redundant (such as time vs age at each timepoint), it's better to just > use age at baseline for the other regressor. > > Best regards, > > Kersten > > > Thanks, > > Lanbo > > > > On Tue, Mar 13, 2018 at 3:34 PM, Diers, Kersten /DZNE <Kersten.Diers@ > > dzne.de<mailto:kersten.di...@dzne.de>> wrote: > > Hello Lanbo, > > > > the univariate example data can actually be downloaded from the LME > > tutorial website: > > > > Search for: "An optional sample dataset which can be used to become > > familiar with the LME Matlab tools can be found here". The linked > > tar.gz archive contains two folders, one for the univariate and one > > for > > the mass-univariate example data. > > > > Best regards, > > > > Kersten > > > > On Di, 2018-03-13 at 13:38 +0100, lanbo Wang wrote: > > > > > > Dear Experts, > > > > > > Hi, > > > There is no example detail on website of LME tutorial. I have some > > > question about it. > > > Could you send me the table of ADNI univariate example data? > > > > > > > > > Thanks, > > > Lanbo > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu> > > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > > > > The information in this e-mail is intended only for the person to > > whom it is > > addressed. If you believe this e-mail was sent to you in error and > > the e-mail > > contains patient information, please contact the Partners Compliance > > HelpLine at > > http://www.partners.org/complianceline . If the e-mail was sent to > > you in error > > but does not contain patient information, please contact the sender > > and properly > > dispose of the e-mail. > > > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >
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