HEALTH · CALCULATOR

NNT 计算器

Enter values to see results and the formula.

Input parameters

Inputs and calculations stay in this browser.

RESULT

Calculate

Example values are ready

Review the inputs, then select Calculate.

Calculation formula

计算结果 = ceil(100/abs(control-treatment))

control
对照组事件风险 · %
treatment
干预组事件风险 · %
向上取整的 1/绝对风险差;干预组风险更高时应解释为 NNH。必须采用同一观察期与事件定义。

Related formulas and subjects

More calculators