Enter the absolute risk of the treatment group and the absolute risk of the control group into the Calculator. The calculator will evaluate the Absolute Risk Increase.

## Absolute Risk Increase Formula

ARI = ART - ARC

Variables:

- ARI is the Absolute Risk Increase ()
- ART is the absolute risk of the treatment group
- ARC is the absolute risk of the control group

To calculate Absolute Risk Increase, subtract the absolute risk of the control group from the absolute risk of the treatment group.

## How to Calculate Absolute Risk Increase?

The following steps outline how to calculate the Absolute Risk Increase.

- First, determine the absolute risk of the treatment group.
- Next, determine the absolute risk of the control group.
- Next, gather the formula from above = ARI = ART – ARC.
- Finally, calculate the Absolute Risk Increase.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

absolute risk of the treatment group = 75

asbolute risk of the control group = 40