[R] Specifying an lme model
r.darnell at uq.edu.au
Tue Jul 15 07:14:50 CEST 2003
I would like some advice on how if possible, to test the following
I have subjects each measured several times. The subjects are sampled
from 3 subpopulations (groups). The question is "Is the
between-subject variance the same for the three groups?"
The "null" model is
lme0 <- lme(y~group,random=~1|subject)
I did think that the model that defined a specific between-subject
variance for each group was
but I am not sure.
I would appreciate any help.
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