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
[email protected]
P.S. to Ron�n: It's nice to hear someone uses -concord- despite the
existence of Roger Newsom's fine Somers' d programs!
----- Original Message -----
From: "Nick Cox" <[email protected]>
To: <[email protected]>
Sent: Wednesday, May 19, 2004 10:42 AM
Subject: RE: st: Kappa programming challenge...
> This is available in Stata through -concord-.
>
> Nick
> [email protected]
>
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]]On Behalf Of Ron�n Conroy
> > Sent: 19 May 2004 15:34
> > To: statalist hsphsun2.harvard.edu
> > Subject: Re: st: Kappa programming challenge...
> >
> >
> > on 19/05/2004 12:25, [email protected] at
> > [email protected] 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 ([email protected])
> > 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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