The effect of combining categories on Bennett, Alpert and Goldstein's S

摘要: Abstract Cohen’s kappa is the most widely used descriptive measure of interrater agreement on a nominal scale. A that has repeatedly been proposed in literature as an alternative to Bennett, Alpert and Goldstein’s S . The latter equivalent Janson Vegelius’ C Brennan Prediger’s n An table can be collapsed into smaller size by partitioning categories subsets. paper presents several results how overall -value related -values tables. It shown that, if are partitioned subsets same we consider all tables this partition type, then average This result illustrates there types average, do not loss information terms -value. In addition, it proved for other types, strictly than consequence always at least one way combine such increases. increases which exists considerable disagreement.