Tool to calculate the number needed to treat (NNT) between two independent groups.

Thanks to the article below, you will also be able to calculate the number needed to treat on your own, discover how to calculate the number needed to harm, and the difference between these …

NNT = Number of patients that must be given the experimental treatment for the duration of the study to prevent a single outcome e.g. death or other measurable variable. The inverse of the …

The NNT is an intuitive and simple way of estimating how likely it is that a treatment or medicine will help an individual person. And it turns out that the NNT for a drug or intervention is easily …

The number needed to treat (NNT) ccalculator helps determine the effectiveness of medical interventions with NNT = 1 / (Control Event Rate – Treatment Event Rate) formula.

To calculate the NNT, you need to know the Absolute Risk Reduction (ARR); the NNT is the inverse of the ARR: NNT = 1/ARR. Where ARR = CER (Control Event Rate) – EER …

The NNT calculator provides a useful measure of the relative benefit of an active treatment over a control and helps summarize trial findings. The ideal NNT is 1, where one person is treated …

Jun 25, 2025 · For any NNT, the magnitude of the treatment effect needs to be taken into consideration as well as any associated side effects. For any NNH, the number of patients …

Oct 16, 2025 · NNT defined as the number of patients needed to treat for one to benefit, with example calculation from event rates and risk reduction.

Aug 24, 2025 · Calculating the Number Needed to Treat involves a straightforward formula: NNT = 1 / Absolute Risk Reduction (ARR). The ARR must be expressed as a decimal for this …