kappam.light: Light's Kappa for m raters

In irr: Various Coefficients of Interrater Reliability and Agreement

Description

Computes Light's Kappa as an index of interrater agreement between m raters on categorical data.

Usage

kappam.light(ratings)

Arguments

ratings

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

Details

Missing data are omitted in a listwise way.
Light's Kappa equals the average of all possible combinations of bivariate Kappas between raters.

Value

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

$method	a character string describing the method applied for the computation of interrater reliability.
$subjects	the number of subjects examined.
$raters	the number of raters.
$irr.name	a character string specifying the name of the coefficient.
$value	value of Kappa.
$stat.name	a character string specifying the name of the corresponding test statistic.
$statistic	the value of the test statistic.
$p.value	the p-value for the test.

Author(s)

Matthias Gamer

References

Conger, A.J. (1980). Integration and generalisation of Kappas for multiple raters. Psychological Bulletin, 88, 322-328.

Light, R.J. (1971). Measures of response agreement for qualitative data: Some generalizations and alternatives. Psychological Bulletin, 76, 365-377.

See Also

kappa2, kappam.fleiss

Examples

data(diagnoses)
kappam.light(diagnoses)   # Light's Kappa

Example output

Loading required package: lpSolve
 Light's Kappa for m Raters

 Subjects = 30 
   Raters = 6 
    Kappa = 0.459 

        z = 2.31 
  p-value = 0.0211 

irr documentation built on May 2, 2019, 8:50 a.m.