R: Calculates a Wilson confidence interval with continuity...
wilson.phi
R Documentation
Calculates a Wilson confidence interval with continuity correction
Description
wilson.phi gives a two-sided Wilson confidence interval with continuity correction
for the difference of two dependent proportions. Data are assumed to be of a fourfold table, which contains the numbers
of concordance and the numbers of discordance of two dependent methods. The continuity correction is
performed to the estimated phi which is calculated by the entries of the fourfold table.
Usage
wilson.phi(a, b, c, d, n, alpha)
Arguments
a
first number of concordant paires as described above
b
first number of discordant paires as described above
c
second number of discordant paires as described above
d
second number of concordant paires as described above
n
number of observed objects
alpha
type I error; between zero and one
Value
A list with class '"htest"' containing the following components:
conf.int
a confidence interval for the difference in proportions
estimate
estimated difference in proportions
Author(s)
Daniela Wenzel, Antonia Zapf
References
Newcombe, R.G. (1998). Improved confidence intervals for the difference
between binomial proportions based on paired data. Statistics in
Medicine 17. 2635-2650.
Examples
# a=10, b=15, c=5, d=20, n=50, type I error is 0.05
conf.int=wilson.phi(10,15,5,20,50,0.05)