Translations:Advanced Field Epi:Manual 1 - Disease Investigation/177/en
Attributable risk (AR)
Attributable risk (also called risk difference) is a measure of association that is based only on the exposed population. It is the absolute difference between the two incidence rates from a 2 x 2 table. The AR tells the rate of disease in the exposed population that is attributable to being exposed. AR provides an estimate of the rate of disease that could be prevented if the exposure were removed completely from the population.