poi.ci {NCStats}R Documentation

Confidence interval for Poisson rate parameter.

Description

Computes a confidence interval for the Poisson mean rate parameter.

Usage

poi.ci(x,conf.level=0.95)

Arguments

x a number representing the number of observed successes.
conf.level a number indicating the level of confidence to use for constructing confidence intervals (default is 0.95).

Details

Computes a CI for the Poisson mean using the methods of Ulm (1990).

Value

A 1x2 matrix containing the lower and upper confidence interval bounds.

Author(s)

Derek H. Ogle, dogle@northland.edu

References

Ulm K. 1990. A simple method to calculate the confidence interval of a standardized mortality ratio. American Journal of Epidemiology 131(2):373-375.

See Also

poi.conf.int in epitools.

Examples

poi.ci(12)
[Package NCStats version 0.0-12 Index]