Various Confidence Interval Methods for Proportions

Computes two-sample confidence intervals for single, paired and independent proportions.

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The confidence intervals are mostly described in Alan Agresti's CDA book.
How to calculate the intervals in other software is described at the webpage for CDA.

To post feature requests or ask for help, try the PropCIs Issue Tracker.


To install the development version of the PropCIs package, it is easiest to use the devtools package:

install.packages("devtools")  # if needed..
install_github("PropCIs", "shearer")


Release Notes						

New changes must be added

Changes in PropCIs 0.3-0

° Bayesian CI methods added

Changes in PropCIs 0.2-2

° PropCIs is now on github.

Changes in PropCIs 0.2-0

° corrected an issue in wald2ci. Thanks to Christopher Bilder

Changes in PropCIs 0.1-8

° added htest output to various functions

Changes in PropCIs 0.1-7

° added correction term * nxy / (nxy - 1) to subfunction z2stat.R in diffscoreci.R and *(nx+ny-1)/(nx+ny) to subfunction limit.R in orscoreci.R. See: Miettinen OS, Nurminen M. Comparative analysis of two rates. Statistics in Medicine 1985;4:213-226. Thanks to Tamas Ferenci.

Reference manual

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0.3-0 by Ralph Scherer, a year ago

Report a bug at

Browse source code at

Authors: Ralph Scherer

Documentation:   PDF Manual  

GPL license

Imported by ORCI, RAPIDR.

Depended on by DTComPair, diffdepprop.

See at CRAN