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Re: st: Kappa programming challenge...


From   "Steichen" <steichen@triad.rr.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Kappa programming challenge...
Date   Wed, 19 May 2004 11:08:41 -0400

Stephen,

If you choose to use -concord-, be sure to use version 2.2.7 or higher
(available through both the STB and SSC). An erratum issued by Lin was
applied in this version.  Prior versions implemented an incorrect formula
and can significantly miscalculate the statistic at the extremes.

Tom
steichen@triad.rr.com

P.S. to Ronán: It's nice to hear someone uses -concord- despite the
existence of Roger Newsom's fine Somers' d programs!


----- Original Message ----- 
From: "Nick Cox" <n.j.cox@durham.ac.uk>
To: <statalist@hsphsun2.harvard.edu>
Sent: Wednesday, May 19, 2004 10:42 AM
Subject: RE: st: Kappa programming challenge...


> This is available in Stata through -concord-.
>
> Nick
> n.j.cox@durham.ac.uk
>
> > -----Original Message-----
> > From: owner-statalist@hsphsun2.harvard.edu
> > [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Ronán Conroy
> > Sent: 19 May 2004 15:34
> > To: statalist hsphsun2.harvard.edu
> > Subject: Re: st: Kappa programming challenge...
> >
> >
> > on 19/05/2004 12:25, stephen.kay@adelphigroup.com at
> > stephen.kay@adelphigroup.com wrote:
> >
> > > All ratings are on a 1 to 7 scale with end anchors along
> > > the lines of 'rubbish' and 'brilliant'.
> >
> > Since the scale is ordered, what about Lin's concordance
> > coefficient? I
> > prefer it, somehow, to weighting kappa.
> >
> > Ronan M Conroy (rconroy@rcsi.ie)
> > Lecturer in Biostatistics
> > Royal College of Surgeons
> > Dublin 2, Ireland
> > +353 1 402 2431 (fax 2764)
> >
> > --------------------
> > Just say no to drug reps
> > http://www.nofreelunch.org/
> >
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> >
>
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