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Re: st: Intraclass correlation coefficient


From   Ronan Conroy <rconroy@rcsi.ie>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Intraclass correlation coefficient
Date   Thu, 13 Oct 2011 17:40:13 +0100

On 2011 DFómh 13, at 14:10, Sofia Ramiro wrote:

> Hello,
> 
> Does anyone know how to calculate the ICC between 2 variables?
> I am analyzing the inter-reader reliability, and only know how to calculate
> ICCs with SPSS. However, does not make much sense to use Stata and switch
> back to SPSS just because of this small part of the analysis
> I appreciate your help

There are three 'flavours' of intraclass correlation corresponding to different hypotheses. Type one intraclass correlations are handled by -loneway-. The others are handled by -icc23-, written by Paul F. Visintainer and Luis C.Orozco. 

You need to know which flavour you require. 

Ronán Conroy
rconroy@rcsi.ie
Associate Professor
Division of Population Health Sciences
Royal College of Surgeons in Ireland
Beaux Lane House
Dublin 2


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