Re: [R] Interrater and intrarater variability (intraclass correlation coefficients)

From: Karl Knoblick <karlknoblich_at_yahoo.de>
Date: Wed 17 May 2006 - 15:53:56 EST


Daer John,  

Thanks! My problem is that in the mentioned packages (irr, condord, and psy) only a n*m matrix for subjects and raters can be given as data. So I can not give the repetitions as data and therefore it will be impossible to get results for the INTRArater reliability.  

Regards,
Karl

Dear Andrew and Karl,

See the irr, condord, and psy packages.

Regards,
John

On Tue, 16 May 2006 20:37:00 +1000
Andrew Robinson <A.Robinson@ms.unimelb.edu.au> wrote:
> Hi Karl,
>
> this sounds like a variance components problem - I suspect that you
> will find that you can tackle it using the lme() or lmer() functions
> of the nlme and lme4 packages respectively.
>
> The key reference for this tool is:
>
> @Book{PB00:mixed,
> author = {J. C. Pinheiro and D. M. Bates},
> title = {Mixed-effects models in S and Splus},
> publisher = {Springer-Verlag},
> year = 2000
> }
>
> Cheers,
>
> Andrew
>
>
>
> On Tue, May 16, 2006 at 10:09:54AM +0000, Karl Knoblick wrote:
> > Hello!
> >
> > I want to calculate the intra- and interrater reliability of my
> study. The design is very simple, 5 raters rated a diagnostic score 3
> times for 19 patients.
> >
> > Are there methods/funtions in R? I only found packages to calculate
> interrater variability and intraclass correlation coefficients for
> matrices of n*m (n subjects, m raters) - I have n subjects, m raters
> and r repetitions.
> >
> > Can anybody help?
> >
> >
> > Thanks!
> > Karl
> >
> > ______________________________________________
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>
> --
> Andrew Robinson
> Department of Mathematics and Statistics Tel:
> +61-3-8344-9763
> University of Melbourne, VIC 3010 Australia Fax:
> +61-3-8344-4599
> Email: a.robinson@ms.unimelb.edu.au
> http://www.ms.unimelb.edu.au
>
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John Fox
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
http://socserv.mcmaster.ca/jfox/

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed May 17 15:58:24 2006

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