pois.exact: Exact confidence interval for Poisson counts or rates
Description
Calculates exact confidence interval for Poisson counts or rates
Usage
pois.exact(x, pt = 1, conf.level = .95)
Arguments
x
count or vector of counts
pt
person-time at risk (default = 1)
conf.level
confidence level (default = 0.95)
Value
This function returns a n x 6 matrix with the following colnames:
xPoisson count
ptperson-time at risk
ratecrude rate = x/pt
conf.levelconfidence level
lcilower confidence limit
uciupper confidence limit
Details
By default, this function calculates an exact confidence interval for
a Poisson count x (pt = 1). To calculate an exact confidence
interval for a crude rate (count divided by person-time at risk), set
pt equal to the person-time at risk. Both x and
pt can be either a number or a vector of numbers.