rateratio {fmsb} | R Documentation |
Calculate incidence rate ratio (a kind of relative risk) and its confidence intervals based on approximation, followed by null hypothesis (incidence rate ratio equals to 1) testing.
rateratio(a, b, PT1, PT0, conf.level=0.95)
a |
The number of disease occurence among exposed cohort. |
b |
The number of disease occurence among non-exposed cohort. |
PT1 |
The observed person-time of the exposed cohort. |
PT0 |
The observed person-time of the unexposed cohort. |
conf.level |
Probability for confidence intervals. Default is 0.95. |
estimate |
Calculated point estimate of incidence rate ratio. |
conf.int |
A numeric vector of length 2 to give upper/lower limit of confidence intervals. |
p.value |
The significant probability of the result of null-hypothesis testing. |
Minato Nakazawa minato-nakazawa@people.kobe-u.ac.jp https://minato.sip21c.org/
Rothman KJ (2012) Epidemiology: An Introduction. 2nd Ed., Oxford University Press, Oxford.
res <- rateratio(136, 1709, 22050, 127650) str(res) print(res)