is the ratio of risk in the treated group (EER) to the risk in the control group (CER): RR = EER/CER RR is used in randomized trials and cohort studies
The comparison of the measured or estimated air concentration of a specific chemical to its health benchmark to determine either the magnitude of the risk of developing cancer or of some noncancer health effect If the risk ratio for a chemical is less than one, the air concentration does not pose a health risk If it greater than one, it may be of concern The risk ratio shows just how much higher the air concentration is than the health benchmark
is the ratio of risk in the treated group (EER) to the risk in the control group (CER): RR = EER/CER RR is used in randomised trials and cohort studies