Characteristics and Reporting of Number Needed to Treat, Number Needed to Harm, and Absolute Risk Reduction in Controlled Clinical Trials, 2001-2019

JAMA Intern Med. 2021 Feb 1;181(2):282-284. doi: 10.1001/jamainternmed.2020.4799.


This cross-sectional study assesses the trends and characteristics of absolute measure reporting in highly cited medical journals from 2001 to 2019.

MeSH terms

  • Controlled Clinical Trials as Topic*
  • Humans
  • Numbers Needed To Treat*
  • Research Design*