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Topic: Intraclass correlation
Replies: 2   Last Post: May 18, 2013 12:32 PM

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Frank De Geeter

Posts: 64
Registered: 2/4/05
Intraclass correlation
Posted: May 18, 2013 4:22 AM
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Hi there,

I am calculating intraclass correlation coefficients to assess the reliability of visual scoring of brain scans in Parkinson's.

However, I did this three times:
*in SPSS,
*in software available from the university of Hong Kong at
*and then in Excel using the formulas given on

The results I got from the calculation 'by hand' were exactly equal to those delivered by the Hong Kong website. To my amazement, however, these differ from the SPSS results.
Could anyone explain what is happening here?



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