Published Online: 15 SEP 2006
Copyright © 2002 John Wiley & Sons, Ltd
Encyclopedia of Environmetrics
How to Cite
West, R. W. 2006. Added Risk. Encyclopedia of Environmetrics.
- Published Online: 15 SEP 2006
Dose–response studies of environmental toxins are designed to determine the detrimental effects associated with exposure to the toxin, over a particular range of exposures. To properly quantify the toxic effect of a toxin, the background risk of no exposure to the toxin, R(0), must first be specified. The additional risk incurred by exposure to a dose, d, of the toxin is then called the added risk (AR) at this dose and is given by AR(d) = R(d) – R(0).