Absolute Risk Reduction (ARR)
Compares the probability of an outcome in the control group with the treatment group.
Berger, M. et al. 2003. Health Care, Cost, Quality, and Outcomes: ISPOR Book of Terms, Lawrenceville, NJ: International Society for Pharmacoeconomics and Outcomes Research.
Gordis, L. 2000. Epidemiology, 2nd ed., Philadelphia, PA: Elsevier Science.
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