Table AOT0. Agreement between two dichotomous ratings (intraclass kappa)

Power or sample size are computed using the large sample standard error of estimated kappa from Block, D.A. and Kraemer, H.C. (1989). 2×2 kappa coefficients: measures of agreement or association. Biometrics. 45:269-287. Figure AOT0 shows computations for an example taken from page 1518 in Donner A, Eliasziw M (1992) A goodness-of-fit approach to inference procedures for the kappa statistic: confidence interval construction, significance-testing and sample size estimation. Statistics in Medicine, 11, 1511-1519.

Figure AOT0. In the first column, nQuery Advisor® 7.0 computed sample size, and in the second column, power.