On Agreement Tables with Constant Kappa Values | Zendy

Matthijs J. Warrens | Zendy

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On Agreement Tables with Constant Kappa Values

Author(s) -

Matthijs J. Warrens

Publication year - 2014

Publication title -

advances in statistics

Language(s) - English

Resource type - Journals

eISSN - 2356-6892

pISSN - 2314-8314

DOI - 10.1155/2014/853090

Subject(s) - kappa , categorical variable , cohen's kappa , mathematics , value (mathematics) , constant (computer programming) , contingency table , statistics , combinatorics , agreement , class (philosophy) , computer science , geometry , artificial intelligence , linguistics , philosophy , programming language

Kappa coefficients are standard tools for summarizing the information in cross-classifications of two categorical variables with identical categories, here calledagreement tables. When two categories are combined the kappa value usually either increases or decreases. There is a class of agreement tables for which the value of Cohen’s kappa remains constant when two categories are combined. It is shown that for this class of tables all special cases of symmetric kappa coincide and that the value of symmetric kappa is not affected by anypartitioning of the categories

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