immer (version 0.4-0)

immer_agree2: Agreement Statistics for 2 Raters

Description

Some agreement statistics for two raters, including raw agreement, Scott's Pi, Cohen's Kappa, Gwets AC1 and Aickens Alpha (see Gwet, 2010).

Usage

immer_agree2(y, w = rep(1, nrow(y)), symmetrize = FALSE, tol = c(0, 1))

## S3 method for class 'immer_agree2':
summary(object, digits=3,...)

Arguments

y

Data frame with responses for two raters

w

Optional vector of frequency weights

symmetrize

Logical indicating whether contingency table should be symmetrized

tol

Vector of integers indicating tolerance for raw agreement

object

Object of class immer_agree2

digits

Number of digits after decimal for rounding

...

Further arguments to be passed

Value

• List with entries
• agree_raw
  Raw agreement
• agree_stats
  Agreement statistics
• agree_table
  Contingency table
• marg
  Marginal frequencies
• Pe
  Expected chance agreement probabilities
• PH
  Probabilities for hard-to-classify subjects according to Aicken
• nobs
  Number of observations

References

Gwet, K. L. (2010). Handbook of Inter-Rater Reliability. Gaithersburg: Advanced Analytics.

Examples

#############################################################################
# EXAMPLE 1: Dataset in Schuster & Smith (2006)
#############################################################################

data(data.immer08)
dat <- data.immer08

y <- dat[,1:2]
w <- dat[,3]
# agreement statistics
res <- immer_agree2( y = y , w = w )
summary(res)
# extract some output values
res$agree_stats
res$agree_raw