stuart.maxwell: Stuart-Maxwell coefficient of concordance for two raters
In irr: Various Coefficients of Interrater Reliability and Agreement

Description Usage Arguments Details Value Author(s) References See Also Examples

Calculates the Stuart-Maxwell coefficient of concordance for two raters.

1	stuart.maxwell.mh(x)

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

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

A list with class "irrlist" containing the following components:

`$method`	a character string describing the method.
`$subjects`	the number of data objects.
`$raters`	the number of raters.
`$irr.name`	the name of the coefficient (Chisq).
`$value`	the value of the coefficient.
`$stat.name`	the name and df of the test statistic.
`$statistic`	the value of the test statistic.
`$p.value`	the probability of the test statistic.

Jim Lemon

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.

bhapkar, rater.bias

 # fake a 2xn matrix of three way classification scores
 ratings<-matrix(sample(1:3,60,TRUE), nrow=2)
 stuart.maxwell.mh(ratings)
 
 # Example used from Stuart (1955)
 data(vision)
 stuart.maxwell.mh(vision)