[R] Tukey HSD (or other post hoc tests) following repeated measures ANOVA

[Ullrich Ecker]

Thanks, Dieter,

but as far as I understand,  'glht' does not support objects of class 
'aovlist' either. I mean, I know there is a "TukeyHSD" function out 
there, but that's the problem: repeated measures ANOVA yields an 
aovlist object, and TukeyHSD calls for an aov object.

And I don't know if confidence intervals are "certainly much better 
than p-values". What I do know is that most journals of psychology 
(and medicine, neuroscience, ...for that matter) usually require 
p-values be reported.


Still hope someone can help...

Ullrich


At 06:31 PM 28/05/2008, you wrote:
>Ullrich Ecker <ullrich.ecker <at> uwa.edu.au> writes:
>
> > I am fairly new to R, and I am aware that others have had this
> > problem before, but I have failed to solve the problem from previous
> > replies I found in the archives.
> >
> > Now, I want to calculate a post-hoc test following up a 
> within-subjects ANOVA.
>
>
>Probably the best is package multcomp. By default, it gives confidence
>intervals, which is certainly much better than p-values. Haven't tried if you
>can get p-values.
>
>Dieter
>
>
>library(multcomp)
>amod <- aov(breaks ~ wool + tension, data = warpbreaks)
>wht <- glht(amod, linfct = mcp(tension = "Tukey"))
>
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