[S] LME question

Laszlo Tothfalusi (l.tothfalusi@utoronto.ca)
Fri, 13 Feb 1998 10:52:17 -0500

Dear Splus experts,

Is there any way to specify a heterogenous covariance structure of R
using LME ?
For example, if I would like to analyze growth curves of boys and girls,
the following
SAS code would do the job:

Proc mixed data=test;
class person gender;
model = y gender age gender*age/s;
repeated/ type=cs subject = person group = gender;

Now I get different residual cluster error according to the gender.
How can I do this type of analysis in Splus ?

Any help is appreciated.

Laszlo Tothfalusi
Department of Pharmacology
University of Toronto

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