[R] Comparing Kappa coefficients

moadeep
Tue, 11 Dec 2012 13:44:34 -0000

I have a simple R script which uses the psych package to calculate cohens
kappa (weighted) from a csv file. The csv file has 2 columns of ordinal data
- one ranked by an experienced observer and the other by a novice who is
undergoing training. What I would like to do is measure kappa for subsets of
this data (say 30-50 ratings) and check whether the observed agreement
between novice and experienced observer improves with training. Which metric
should I use to compare to kappas? At the moment the 95% CI for 100
observations is quite wide -  0.31 - 0.71



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