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Re: st: Repeated anove problems


From   Søren O'Neill <soren@oneill.dk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Repeated anove problems
Date   Sun, 23 Mar 2008 19:22:25 +0100

Hi all,
Carlo: this misspelling was only in the mail - thats not the problem.
David: I'll look at the link - thanks a lot!

Kind regards
Soren

On Sunday 23 March 2008 18:38:59 David Airey wrote:
> .
>
> You need to explicitly put the id term in the model, and you need to
> specify the repeated factors, not the id, in the repeated option.
> There is an FAQ on a two factor within subjects design like yours.
> Your two repeated factors are site and phase.
>
> http://www.stata.com/support/faqs/stat/anova2.html#half713
>
> anova value id site / id*site phase / id*phase site*phase,
> repeated(site phase)
> A couple other FAQs tell you about how to follow up a significant
> omnibus F tests with post hoc tests, because the omnibus F tests
> provided by ANOVA are only half the story, when you have more than 2
> levels in a factor.
>
>
> You can also try this model with manova or xtmixed.
>
>
>
> -Dave
>
> On Mar 23, 2008, at 11:57 AM, Søren O'Neill wrote:
> > My data represents pressure-pain-threshold measurements
> > (variable=value) from
> > 13 individuals (variable=id), from 8 sites (in each individual)
> > (variable=site) at 3 differents times (variable=phase) - before,
> > during and
> > after intervention.
> >
> > I'm trying to do a 2-way, repeated-measures anove, to see if time
> > and/or site
> > is significant.
> >
> > I run:
> > anove value site phase, repeated(id)
> >
> > I get the following error: term not in model
> >
> > I've made sure data are de-stringed - so thats not the problem.
> >
> > Any suggestions?
> > --
> > Med venlig hilsen  /  Kind regards
> > Søren O'Neill
> >
> > vCard : http://www.oneill.dk/Soren_ONeill.vcf
> >
> > *
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>
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-- 
Med venlig hilsen  /  Kind regards 
Søren O'Neill

vCard : http://www.oneill.dk/Soren_ONeill.vcf

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



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