[R] repeated measures anova, car package

Kay Cichini Kay.Cichini at uibk.ac.at
Mon Mar 1 16:44:30 CET 2010

Hello list,

I' d very much appreciate some help with a two sample repeated measures
I did the analysis yielding sign. main effects (between subj.=site, within
subj.=cover) and a sign. interaction:

Univariate Type II Repeated-Measures ANOVA Assuming Sphericity

                SS num Df Error SS den Df       F   Pr(>F)   
site       18.7620      1   18.831     10  9.9631 0.010220 * 
cover       6.4481      1   16.462     10  3.9169 0.075984 . 
site:cover 19.2963      1   16.462     10 11.7216 0.006507 **
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

But then I was interested in the significance of the within factor in each
of the levels of the between factor.
Also, I'm a bit confused if the type of SS does play a role here - I choose
the default, the design is balanced.
In despair of a better solution I did two seperate paired t-tests on each
level, but I guess that's not the best solution.

Thanks for any advise,
Kay Cichini   
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