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Relative risk calculator

Free Online Relative risk calculator, Enter Value of Number with positive (bad) outcome (a), Number with negative (good) outcome (b), Number with positive (bad) outcome (c) & Number with negative (good) outcome (d), then hit on "Calculate" button and get result.

Calculation results

Relative risk calculator

Relative Risk Formula

Relative Risk (RR) = (a / (a + b)) / (c / (c + d))

95% CI = exp(ln(RR) - 1.96 * SE(ln(RR))) to exp(ln(RR) + 1.96 * SE(ln(RR)))

Z Statistic = ln(RR) / SE(ln(RR))

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