RT Book, Section A1 Saver, Jeffrey L. A1 Lewis, Roger J. A2 Livingston, Edward H. A2 Lewis, Roger J. SR Print(0) ID 1184194616 T1 Number Needed to Treat: Conveying the Likelihood of a Therapeutic Effect T2 JAMA Guide to Statistics and Methods YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781260455328 LK jamaevidence.mhmedical.com/content.aspx?aid=1184194616 RD 2024/04/18 AB This JAMA Guide to Statistics and Methods explains the calculations and concepts underlying the number needed to treat (NNT) as a summary statistic of effect, and the assumptions underlying the measure that affect its interpretation.