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Maximum likelihood estimation of the kappa coefficient from models of matched binary responses
Author(s) -
Shoukri M. M.,
Martin S. W.,
Mian I. U. H.
Publication year - 1995
Publication title -
statistics in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.996
H-Index - 183
eISSN - 1097-0258
pISSN - 0277-6715
DOI - 10.1002/sim.4780140109
Subject(s) - intraclass correlation , kappa , statistics , estimator , cohen's kappa , monte carlo method , mathematics , binary number , maximum likelihood , correlation coefficient , variance (accounting) , score test , geometry , arithmetic , accounting , business , psychometrics
We present an estimate of the kappa‐coefficient of agreement between two methods of rating based on matched pairs of binary responses and show that the estimate depends on the common intraclass correlation coefficient between the pairs. Via Monte Carlo simulation, we investigate power of the test of significance on kappa, and the large sample bias and variance of its maximum likelihood estimator.