RCI: Calculate risk and its confidence interval

In fmsb: Functions for Medical Statistics Book with some Demographic Data

Calculate risk and its confidence interval

Description

Calculate risk and its confidence interval by the simple asymptotic method.

Usage

 RCI(a, N, conf.level=0.9) 

Arguments

a	Number of cases
N	Number of population at risk
conf.level	Probability for confidence intervals. Default is 0.9.

Value

R	Point estimate of risk.
RL	Lower limit of confidence interval
RU	Upper limit of confidence interval

Author(s)

Minato Nakazawa [e-mail] https://minato.sip21c.org/

References

Rothman KJ (2012) Epidemiology: An Introduction. 2nd Ed., Oxford University Press, Oxford.

Examples

# By simple asymptotic method
RCI(20, 100)
# By Wilson Score (without continuity correction)
prop.test(20, 100, conf.level=0.9, correct=FALSE)
# By Exact method
binom.test(20, 100, conf.level=0.9)

fmsb documentation built on Jan. 6, 2023, 1:18 a.m.