maxwell function

Maxwell's RE coefficient for binary data

Computes Maxwell's RE as an index of the interrater agreement of binary data.

maxwell(ratings)

Arguments

• ratings: n*2 matrix or dataframe, n subjects 2 raters.

Details

Missing data are omitted in a listwise way.

Returns

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 (=2).

• $irr.name: a character string specifying the name of the coefficient.

• $value: value of RE.

References

Maxwell, A.E. (1977). Coefficients of agreement between observers and their interpretation. British Journal of Psychiatry, 130, 79-83.

Author(s)

Matthias Gamer

See Also

kappa2

Examples

data(anxiety)
# Median-split to generate binary data
r1 <- ifelse(anxiety$rater1<median(anxiety$rater1),0,1)
r2 <- ifelse(anxiety$rater2<median(anxiety$rater2),0,1)
maxwell(cbind(r1,r2))