The Attributable Risk Percent (AR%) Calculator is a critical tool in public health. It measures the proportion of incidence of a condition or disease in an exposed population that is attributable to the exposure. This tool is especially useful in determining the impact of removing a risk factor on the health of the population.
Formula of Attributable Risk Percent Calculator
To calculate the Attributable Risk Percent (AR%), apply this formula:
Attributable Risk Percent (AR%) = [(Incidence in Exposed Group - Incidence in Unexposed Group) / Incidence in Exposed Group] * 100
Here's what each term means:
- Incidence in Exposed Group (Ie): The occurrence rate of a condition or disease in the group exposed to a certain risk factor.
- Incidence in Unexposed Group (Iu): The occurrence rate of the condition or disease in the group not exposed to the risk factor.
Table for General Terms
Below is a table that includes general terms related to the AR% Calculator, which can help users understand and utilize the calculator without needing to compute values manually.
| Term | Definition |
|---|---|
| Attributable Risk Percent | Percentage of incidence due to exposure in the exposed group |
| Incidence in Exposed Group | Rate of disease or condition occurrence in exposed individuals |
| Incidence in Unexposed Group | Rate of disease or condition occurrence in unexposed individuals |
Example of Attributable Risk Percent Calculator
Consider a scenario where the incidence of a disease in the exposed group is 20% and in the unexposed group is 5%. The AR% would be calculated as follows:
AR% = [(20 - 5) / 20] * 100 = 75%
This means 75% of the disease incidence in the exposed group is attributable to the exposure.
Most Common FAQs
Attributable Risk Percent measures the proportion of a disease in an exposed group that is due to the exposure.
It helps determine the impact of removing a risk factor on the health of a population.
No, AR% represents the excess risk due to exposure and is typically a positive value.