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

It is a simple statistical concept called the “Number-Needed-to-Treat”, or for short the ‘NNT’. The NNT offers a measurement of the impact of a medicine or therapy by estimating the number of patients that need to be treated in order to have an impact on one person.

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 absolute risk reduction, NNT, is an important measure in pharmacoeconomics.

Our handy number needed to treat calculator uses NNT = 1 / Absolute Risk Reduction (ARR) equation to accurately calculate nnt with examples.

The NNT calculator allows you calculate the Number Needed to Treat and Absolute Risk Reduction (ARR) using two different methods.

Dec 16, 2022 · Use this NNT calculator to find the number needed to treat and absolute risk reduction.

The number needed to treat (NNT) or number needed to treat for an additional beneficial outcome (NNTB) is an epidemiological measure used in communicating the effectiveness of a health-care intervention, typically a treatment with medication. The NNT is the average number of patients who need to be treated to prevent one additional bad outcome.

NNT is easily determined by subtracting the rates in. question (ie, response rates, remission rates), and calculating the reciprocal of this difference. Mathematically, it can be expressed as NNT = 1/(Rate1 − Rate2). For our example above, NNT = 1/(0.125 − 0.10) = 1/0.025 = 40. Calculating the confidence interval (CI) for the NNT is more complex.

Number Needed to Treat (NNT) is a statistical measure used in clinical research to quantify the effectiveness of a medical intervention or treatment. It represents the number of patients who need to be treated to prevent one additional outcome of interest, such as an adverse event or a specific health outcome.

The Number Needed to Treat (NNT) is the number of patients you need to treat to prevent one additional bad outcome (death, stroke, etc.). For example, if a drug has an NNT of 5, it means you have to treat 5 people with the drug to prevent one additional bad outcome.