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The Equivalence of Multiple Rater Kappa Statistics and Intraclass Correlation Coefficients

1988; SAGE Publishing; Volume: 48; Issue: 2 Linguagem: Inglês

10.1177/0013164488482009

1552-3888

Gordon Rae,

Advanced Statistical Methods and Models

Using the Gini-Light-Margolin concept of partioning variance for qualitative data, correspondences are established between various kappa statistics and intraclass correlation coefficients under general conditions (multiple raters and polychotomous category systems). A measure of marginal symmetry for multiple ratings is also developed and is shown to have a proportion-of-variance explanation.