How To Calculate Attributable Risk Proportion

Introduction & Importance

Attributable risk proportion is a crucial measure in epidemiology…

How to Use This Calculator

1. Enter the incidence of disease…
2. Enter the risk ratio…
3. Click ‘Calculate’…

Formula & Methodology

The attributable risk proportion (ARP) is calculated as:

ARP = (RR – 1) / RR * 100%

Real-World Examples

Let’s consider three scenarios…

Data & Statistics

Incidence rates of disease in exposed and unexposed populations

Population	Incidence (per 100,000)
Exposed	100
Unexposed	50

Expert Tips

• Always use the most recent data…
• Consider the confidence intervals…

Interactive FAQ

What is the difference between attributable risk and attributable risk proportion?

Attributable risk is the absolute number of cases…

World Health Organization – CDC – Epidemiology