Enter the incidence risk among both the exposed and non-exposed groups into the calculator to determine the attributable risk.

- Relative Risk Calculator
- Absolute Risk Reduction Calculator
- Accuracy Calculator
- Incidence Rate Calculator

## Attributable Risk Formula

The following formula can be used to calculate the attributable risk.

AR = I_{e} – I_{u}

- Where AR is the attributable risk
- I
_{e}is the incidence rate in the exposed group - I
_{u}is the incidence rate in the non-exposed group

## Attributable Risk Definition

Attributable risk is the difference between the incidence rate in an exposed group to a non-exposed group.

## Attributable Risk Example

How to calculate attributable risk?

**First, determine the incidence rate in the exposed group.**Measure the incidence rate in the exposed group.

**Next, determine the incidence rate in the non-exposed group.**Measure the incidence rate in the non-exposed group.

**Finally, calculate the attributable risk.**Using the formula above, calculate the attributable risk.

## FAQ

**What is an attributable risk?**

The definition of the attributable risk is as follows: a measure of the prevalence of a disease within a group.