This calculator helps you determine the relative risk, or risk ratio, which is a measure used in medical diagnostics to assess the risk of a particular outcome occurring in an exposed group compared to a control group.
All calculations rely strictly on established statistical formulas. Please refer to MedCalc for more details. All calculations are strictly based on the formulas and data provided by this source.
Relative Risk (RR) is calculated as:
RR = (a / (a + b)) / (c / (c + d))
where:
a = Exposed Group with Outcomeb = Exposed Group without Outcomec = Control Group with Outcomed = Control Group without OutcomeSuppose in a study, 200 out of 1000 people in the exposed group develop the disease, while in the control group, 50 out of 1000 do. The relative risk would be calculated as follows:
RR = (200 / 1000) / (50 / 1000) = 4. This means the exposed group is four times more likely to develop the disease compared to the control group.
Relative risk is a measure used in statistics to determine the strength of the association between an exposure and an outcome.
Relative risk is calculated by dividing the risk of the event in the exposed group by the risk of the event in the control group.
A relative risk greater than 1 indicates a higher risk of the outcome occurring in the exposed group compared to the control group.
No, relative risk and odds ratio are different measures used in statistical analysis. Relative risk is used when the outcome is common, while odds ratio is often used in case-control studies.
Relative risk is important in identifying potential health risks and in the development of public health policies and recommendations.