# wald.cc: Calculates a Wald confidence interval with continuity...

Description Usage Arguments Value Author(s) References Examples

### Description

wald.cc gives a two-sided Wald confidence interval with continuity correction for the difference of two dependent proportions. The continuity correction factor is \frac{1}{n}. Data are assumed to be of a fourfold table, which contains the numbers of concordance and the numbers of discordance of two dependent methods.

### Usage

 1 wald.cc(b, c, n, alpha) 

### Arguments

 b first number of discordant pairs in a fourfold table as described above c second number of discordant pairs in a fourfold table 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

Fleiss, Joseph L. et al. (2003). Statistical Methods for Rates and Proportions. Wiley.

### Examples

 1 2 # b=10, c=20, n=50, type I error is 0.05 conf.int=wald.cc(10,20,50,0.05) 

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