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Re: st: Query for Statalist on kappa


From   Massimo Mirandola <[email protected]>
To   [email protected]
Subject   Re: st: Query for Statalist on kappa
Date   Tue, 19 Dec 2006 21:57:57 +0100

Hello Ron�n, are you sure that Lins coefficient is an appropriate option with
ordinal data?  Reading the help file it seems that it can be used only with
continuous measure. 


Quoting Ron�n Conroy <[email protected]>:

> On 17 Noll 2006, at 06:10, Meredith Makeham wrote:
> 
> > In addition, the third level of the code has a few cells with very  
> > small values in them (<5), and three of the outcomes for code 1 at  
> > level 3, and one for code 2 at level 3, have a negative value for  
> > their individula kappa statistic.  What does this mean, and should  
> > I not be doing this test if the cell size is smaller than a certain  
> > number?
> 
> A negative kappa means that the raters disagreed more than you would  
> expect by chance alone. They may have been married.
> 
> I would recommend thinking about Lin's concordance coefficient, since  
> your data are ordinal; check out -concord-.
> 
> 
> 
> =========
> Ron�n Conroy
> Royal College of Surgeons in Ireland
> [email protected]
> +353 (0) 1 402 2431
> +353 (0) 87 799 97 95
> http://www.flickr.com/photos/ronanconroy
> 
> 
> 
> 
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> 




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