rrCI: Compute Approximate Confidence Interval for RR.

Description Usage Arguments Details Value Author(s) References Examples

View source: R/rrCI.R

Description

The function computes an approximate confidence interval for the relative risk (RR).

Usage

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rrCI(a, b, c, d, conf.level = 0.95)

Arguments

a

integer: events in exposed group.

b

integer: non-events in exposed group.

c

integer: events in non-exposed group.

d

integer: non-events in non-exposed group.

conf.level

numeric: confidence level

Details

The function computes an approximate confidence interval for the relative risk (RR) based on the normal approximation; see Jewell (2004).

Value

A list with class "confint" containing the following components:

estimate

the estimated relative risk.

conf.int

a confidence interval for the relative risk.

Author(s)

Matthias Kohl [email protected]

References

Jewell, Nicholas P. (2004). Statistics for epidemiology. Chapman & Hall/CRC.

Relative risk. (2016, November 4). In Wikipedia, The Free Encyclopedia. Retrieved 19:58, November 4, 2016, from https://en.wikipedia.org/w/index.php?title=Relative_risk&oldid=747857409

Examples

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## See worked example in Wikipedia
rrCI(a = 15, b = 135, c = 100, d = 150)
rrCI(a = 75, b = 75, c = 100, d = 150)

stamats/MKmisc documentation built on Nov. 10, 2018, 11:24 a.m.