Hallo s-news, I used lme to fit a linear mixed effects model as follows: lme(y~ time + x2 + x3 + x4, random= list(center=~1, pid=~time, data=work) My qqnorm-plot is heavy tailed, because of a lot of
Author: Achaz von Hardenberg <achaz.von.hardenberg@usherbrooke.ca>
Date: Fri, 25 Feb 2005 10:17:15 +0100
Scrive Birgit Mair <mair@slcmsr.org>: Birgit, I do not know what kind of independent variables you are using, but log transforming them (or some other transformation) may help to attain normality of
I would like to reproduce in lme the functionality of the GROUPS= option in the RANDOM statement of PROC MIXED in SAS. This option allows separate random variance and covariance parameters for differ
Dear All, Is it theoretically possible to do linear mixed effect modeling without iterative scheme (not that I want to do it, but still like to know).... Many thanks, In-Sun