E-Value Calculator

Assess the minimum strength of unmeasured confounding

Based on EValue R package

Input Parameters

Enter your observed effect estimate and confidence interval

Effect Measure Type

Point Estimate

Lower 95% CI

Upper 95% CI

Is the outcome rare (<15%)?

Enter parameters and click calculate to see results

Formula

E-value = RR + √(RR × (RR - 1))

For RR < 1, the formula uses 1/RR.

Learn More About E-Values

E-values were introduced by VanderWeele and Ding (2017) as a way to assess the robustness of observed associations to unmeasured confounding. Learn about E-values and other sensitivity analysis methods in our course.

Chapter 30: E-Values Try in R Playground