Hi
In my experiment I have 2 Groups (control patient) and 4 blocks of trials
per subject, n=12 for Control and n=11 for patient
The variances of the patients is very much higher than that of the Control.
1- I tried an ANOVA with Groups as between factor and Blocks as within
factor (repeated measures).
aov(Y ~ gr*block+Error(subj/block), data=d)
works OK but without the significant effect I was looking for, which may
be caused by the variances. So I though I¹d use lme....
2- lme.m = lme(Y ~ gr*block, data=d, random=~1 + block | subj);
anova(lme.m)
I¹d like to make sure that my lme model is correctly psecified.
Thanks in advance for your help!
__________________
Patrick Bédard Ph.D.
Dept. of Neuroscience
Brown University
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