irr (version 0.84)

bhapkar: Bhapkar coefficient of concordance between raters

Description

Calculates the Bhapkar coefficient of concordance for two raters.

Usage

bhapkar(ratings)

Arguments

ratings

n*2 matrix or dataframe, n subjects 2 raters.

Value

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.

Details

Missing data are omitted in a listwise way. The Bhapkar (1966) test is a more powerful alternative to the Stuart-Maxwell test. Both tests are asymptotically equivalent and will produce comparable chi-squared values when applied a large sample of rated objects.

References

Bhapkar, V.P. (1966). A note on the equivalence of two test criteria for hypotheses in categorical data. Journal of the American Statistical Association, 61, 228-235.

See Also

mcnemar.test, stuart.maxwell.mh, rater.bias

Examples

# NOT RUN {
data(vision)
bhapkar(vision) # Original example used from Bhapkar (1966)
# }