ci.kappa: Confidence interval for two kappa reliability coefficients
Description
Computes confidence intervals for the intraclass kappa coefficient and
Cohen's kappa coefficient with two dichotomous ratings. The G-index of
agreement (see ci.agree) is arguably a better measure of agreement.
For more details, see Section 3.5 of Bonett (2021, Volume 3)
Usage
ci.kappa(alpha, f00, f01, f10, f11)
Value
Returns a 2-row matrix. The results in row 1 are for the intraclass
kappa. The results in row 2 are for Cohen's kappa. The columns are:
Estimate - estimated interrater reliability
SE - standard error
LL - lower limit of the confidence interval
UL - upper limit of the confidence interval
Arguments
alpha
alpha level for 1-alpha confidence
f00
number of objects rated 0 by both Rater 1 and Rater 2
f01
number of objects rated 0 by Rater 1 and 1 by Rater 2
f10
number of objects rated 1 by Rater 1 and 0 by Rater 2
f11
number of objects rated 1 by both Rater 1 and Rater 2