Citation

Harris, I.R., Burch, B.D., & St. Laurent, R.T. (2001).   A blended estimator for a measure of agreement with a gold standard.   Journal of Agricultural, Biological and Environmental Statistics 6: 326-339.

Abstract

St. Laurent (1998, Biometrics 54, 537-545) developed a measure of agreement for method comparison studies in which an approximate method of measurement is compared to a gold standard method of measurement. The measure of agreement proposed was shown to be related to an intraclass correlation coefficient. In this paper the authors develop a family of estimators for the measure of agreement based on pivotal quantities. A blend of two particular members of the family is suggested as an estimator itself. In general, this estimator outperforms the maximum likelihood estimator in terms of bias and mean-squared error.

Keywords

Concordance; Intraclass correlation coefficient; Method comparison studies; Pivotal quantity.