An odds ratio is not a relative risk: it lies further from 1, and by more
the more common the outcome. Given the odds ratio, the overall rate of the
outcome and the share exposed, this returns the two risks and the relative
risk they imply. See proof("orrisk").
Arguments
- or
The odds ratio: one positive number.
- rate
The overall rate of the outcome, strictly between 0 and 1.
- share
The exposed share of the population, strictly between 0 and 1.
Value
A named numeric vector: exposed and unexposed (the two risks),
rr (their ratio) and or. A risk closer to 1 than a double can hold
is returned as 1.
Examples
orrisk(or = 3, rate = 0.4, share = 0.5)
#> exposed unexposed rr or
#> 0.5282202 0.2717798 1.9435596 3.0000000
