| rrCI {MKmisc} | R Documentation |
Compute Approximate Confidence Interval for RR.
Description
The function computes an approximate confidence interval for the relative risk (RR).
Usage
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 Matthias.Kohl@stamats.de
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
## See worked example in Wikipedia
rrCI(a = 15, b = 135, c = 100, d = 150)
rrCI(a = 75, b = 75, c = 100, d = 150)