Absolute Risk

See: Treatment Group, Population Attributable Risk.

References

http://www.drcath.net/toolkit/intervention.html
- QUOTE: Absolute risk (AR) is risk in exposed group minus risk in unexposed or differently exposed group. This is the difference in the incidence of disease between exposed and non-exposed group. It quantifies risk attributable to exposure by removing risk of disease that would occur anyway. AR is a useful measure of public health importance of exposure. However, it is not generalisable and sometimes, it can be misinterpreted on a cause equals effect assumption, i.e. no association, then AR=0. [Please note that AR should not be used in case control studies as true incidence of risk is not known. It can be used in cohort studies.] Absolute risk can be converted to an attributable risk percent. This is an estimate of the proportion of disease attributable to exposure (or which could be eliminated). Attributable Risk Percent is calculated by dividing the attributable risk by the rate of disease among the exposed and multiplying it by 100.