Definitions for

**"RISK RATIO"**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.

The ratio of risk in the treated group (EER) to the risk in the control group (CER). This is used in randomized trials and cohort studies and is calculated as EER/CER. Also called relative risk. [ ] Sensitivity Proportion of people with the target disorder who have a positive test result. It is used to assist in assessing and selecting a diagnostic test/sign/symptom. See also likelihood ratio. more details...

Some investors and financial analysts try to estimate the risk an investment poses by speculating on how much the investment is likely to increase in value as opposed to how much it could decline. For example, a share priced at Rs.50 that analysts think could increase to Rs.90 or decrease to Rs.30 has a 4:2 risk ratio (the share could go up Rs.40 but down Rs.20). Critics point out that it is impossible to provide an accurate estimate of future prices, rendering risk ratios meaningless.

Alternative term for relative risk

(See relative risk)