Jake,
You can easily use glht for that.
See ?MMC in the HH package for examples.
You may need
install.packages(HH) ## if you don't already have HH.
Specifically, look at the examples showing the use of focus.lmat
On Thu, Sep 16, 2010 at 11:43 AM, Jake Kami jakejk...@gmail.com wrote:
dear list,
i am using a multifactorial design with two treatments (factor A: drugs,
three levels; factor B: theraphy, two levels) and a time factor (three
levels, different timepoint). hypothetically, i measured the same subjects
for all treatements and timepoints, so its a repeated measurement design.
now i ran an anova in R and also some Tukey post-hoc tests using glht. but
what i am actually interested in is to perform conditional contrasts, f.i.
A1 for the 1st timepoint vs. A1 for the 2nd time (to put it in words: an
evaluation of whether this particular type of drug exerts an effect over
time). so far, i couldnt find any function doing this. i also queried the r
help list archive but without success.
any help on that would be appreciated.
kind regards
j
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