stuart.maxwell.mh {concord}R Documentation

between rater concordance coefficient for classification

Description

calculates the coefficient of concordance for two raters

Usage

stuart.maxwell.mh(x)

Arguments

x cxc classification matrix or matrix of classification scores into c categories.

Details

stuart.maxwell.mh calculates a reliability coefficient for two raters classifying n objects into any number of categories. It will accept either a cxc classification matrix of counts of objects falling into c categories or a cxn or nxc matrix of classification scores.

Value

statistic value of coefficient
p the probability of the coefficient as a Chi-square variable

Author(s)

Jim Lemon

References

Stuart A.A. (1955) A test for homogeneity of the marginal distributions in a two-way classification. Biometrika, 42, 412-416.

Maxwell A.E. (1970) Comparing the classification of subjects by two independent judges. British Journal of Psychiatry, 116, 651-655.

See Also

rater.bias

Examples

 # fake a 2xn matrix of three way classification scores
 ratings<-matrix(sample(1:3,60,TRUE),nrow=2)
 stuart.maxwell.mh(ratings)

[Package concord version 1.4-9 Index]