Effect Measure Converter

Convert between OR, RR, HR, and RD

Epidemiologic Conversions

Input Parameters

Enter the effect measure and baseline risk

Input Measure Type

Odds Ratio Value

Lower 95% CI

Upper 95% CI

Baseline Risk (p₀)

Outcome probability in unexposed group (required for conversion)

Enter parameters and click convert to see results

Key Relationships

OR ≈ RR when outcome is rare (<10%)

HR ≈ RR under proportional hazards

RD = p₁ - p₀ (absolute scale)