Translations:Advanced Field Epi:Manual 1 - Disease Investigation/133/en
Relative Risk
The relative risk (RR) is the ratio of a measure of incidence in the exposed group to the measure of incidence in the unexposed group. It can be based on the incidence rate or cumulative incidence and under some situations prevalence. Relative risks are the primary measure of disease association and should always be used when it is possible to estimate a population-at-risk.