There was a mistake in my earlier note, that I should correct:
"
(Or you can estimate the interaction, and no degrees of freedom are
left for either the time or time:group random effect). All you
can talk
^^^^^^^
about is the average and the difference of the time effects for these
two specific groups.
"
There is no problem with the time random effect; that can be estimated
from the within group variation in slopes, between subjects.
John Maindonald email: [EMAIL PROTECTED]
phone : +61 2 (6125)3473 fax : +61 2(6125)5549
Mathematical Sciences Institute, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.
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