Adjusted Risk Ratio Calculator

Formula

The formula to calculate the adjusted risk ratio is:

\[ ARR = \frac{R_e}{R_u} \]

Where:

\( ARR \) is the adjusted risk ratio
\( R_e \) is the risk in the exposed group
\( R_u \) is the risk in the unexposed group

What is Adjusted Risk Ratio?

An adjusted risk ratio (ARR) is a measure used in epidemiology to compare the risk of a certain event occurring in two different groups of people. One group is exposed to a particular factor, while the other group is not. The adjusted risk ratio accounts for confounding variables that might affect the outcome, providing a more accurate comparison of the risks between the two groups. This metric is crucial in public health and clinical research to determine the effectiveness of interventions and to identify risk factors for diseases.

Example Calculation

Let's assume the following values:

Risk in Exposed Group (R_e) = 0.3
Risk in Unexposed Group (R_u) = 0.1

Using the formula to calculate the adjusted risk ratio:

\[ ARR = \frac{0.3}{0.1} = 3 \]

The Adjusted Risk Ratio (ARR) is 3.