an:05529831
Zbl 1431.62510
Vanbelle, S.; Albert, A.
A bootstrap method for comparing correlated kappa coefficients
EN
J. Stat. Comput. Simulation 78, No. 11-12, 1009-1015 (2008).
00235222
2008
j
62P10
Cohen's kappa; comparison; bootstrap
Summary: Cohen's kappa coefficient is traditionally used to quantify the degree of agreement between two raters on a nominal scale. Correlated kappas occur in many settings (e.g., repeated agreement by raters on the same individuals, concordance between diagnostic tests and a gold standard) and often need to be compared. While different techniques are now available to model correlated \(\kappa \) coefficients, they are generally not easy to implement in practice. The present paper describes a simple alternative method based on the bootstrap for comparing correlated kappa coefficients. The method is illustrated by examples and its type I error studied using simulations. The method is also compared with the generalized estimating equations of the second order and the weighted least-squares methods.