nwinkelmannThis isn't actually correct. Absolute risk is actually just the incidence, or the same as event rate. Absolute risk reduction = the difference in risk (not the proportion) attributable to the intervention as compared to the control, and thus ARR = incidence unexposed - incidence exposed x 100%. In this example, the incidence of exposed is the incidence in the new treatment group, and incidence unexposed is incidence in standard treatment group.+14
submitted by โhayayah(1212)
Absolute risk: the difference in risk (not the proportion) attributable to the intervention as compared to a control.
(.12) - (.04) = .08
ARR = 8%