[R] random error with lme for repeated measures anova
Jean-Pierre Bresciani
bresciani at tuebingen.mpg.de
Wed Aug 27 12:23:58 CEST 2008
Hi,
what is the appropriate syntax to get the random error correct when
performing repeated measures anova with 'lme'.
let's say i have 3 independent variables, with 'aov', i would write
something like: aov(dep_var~(indep_var1*indep_var2*indep_var3) +
Error(subject/(indep_var1*indep_var2*indep_var3)).
With 'lme' however, i can't find the right formula. i tried things like:
lme(dep_var~(indep_var1*indep_var2*indep_var3), random = ~1|subject) or
nesting my independent variables in 'subject', but those are obviously wrong
with my design.
i'm quite clueless (and i haven't found any convincing piece of information
about how to correctly use 'lme' or 'lmer'). So, any advice along that line
is more than welcome.
JP
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