ci.agree2: Confidence interval for G-index difference in a 2-group...

In statpsych: Statistical Methods for Psychologists

Confidence interval for G-index difference in a 2-group design

Description

Computes adjusted Wald confidence intervals for the G-index of agreement within each group and the difference of G-indices.

Usage

ci.agree2(alpha, n1, f1, n2, f2, r)

Arguments

alpha	alpha level for simultaneous 1-alpha confidence
n1	sample size (objects) in group 1
f1	number of objects rated in agreement in group 1
n2	sample size (objects) in group 2
f2	number of objects rated in agreement in group 2
r	number of rating categories

Value

Returns a 3-row matrix. The rows are:

• Row 1: G-index for group 1

• Row 2: G-index for group 2

• Row 3: G-index difference

The columns are:

• Estimate - maximum likelihood estimate of G-index and difference

• SE - standard error

• LL - lower limit of confidence interval

• UL - upper limit of confidence interval

References

\insertRef

Bonett2022statpsych

Examples

ci.agree2(.05, 75, 70, 60, 45, 2)

# Should return:
#          Estimate         SE        LL        UL
# G1      0.8666667 0.02880329 0.6974555 0.9481141
# G2      0.5000000 0.05590170 0.2523379 0.6851621
# G1 - G2 0.3666667 0.06288585 0.1117076 0.6088621

statpsych documentation built on July 9, 2023, 6:50 p.m.