RelativeRiskCalculator

Compute relative risk, absolute risk reduction, and NNT from exposure and outcome data.

Relative Risk Calculator

Cohort Data

Exposed - Cases

Exposed - Total

Unexposed - Cases

Unexposed - Total

Relative Risk

Risk (Exposed)

0.3

Risk (Unexposed)

0.15

Absolute Risk Reduction

-0.15

Number Needed to Treat

∞

About This Tool

This calculator computes relative risk (RR), absolute risk reduction (ARR), and number needed to treat (NNT) from a standard 2x2 contingency table. These metrics are essential in epidemiology and clinical research for quantifying the effect of exposures or treatments.