NEOMED Library: Journal Club Presentation Resources (Statistics Help): NNT/NNH

Number Needed to Treat (NNT)

ARR OR NNT? What's Your Number Needed To Confuse?
Hilda Bastian's Statistically Funny Blog
Efficacy of drugs: 3 examples to get you to truly understand Number Needed to Treat (NNT)
Students 4 Best Evidence
Evidence Based Drug Therapy: What Do the Numbers Mean?
McCormack JP, Rangno RE, Wright J. Evidence Based Drug Therapy: What Do the Numbers Mean? Therapeutics Letter (www.ti.ubc.ca). August/September/October 1996;15:1-4
How Results are Presented (2): Risks, Ratios, NNT and NNH
(2007), How results are presented (2): risks, ratios, NNT and NNH. Prescriber, 18: 21–26.
How to Calculate Patient-specific Estimates of Benefit and Harm from a RCT
Terry Shaneyfelt, MD, MPH on the EBMTeacher blog
MyStudies Beta
Online Tutorial Video Explaining NNT
The NNT.com
Tips for Learners of Evidence-Based Medicine: 1. Relative Risk Reduction, Absolute Risk Reduction and Number Needed to Treat
Barratt A, Wyer PC, Hatala R, et al. Tips for learners of evidence-based medicine: 1. Relative risk reduction, absolute risk reduction and number needed to treat. CMAJ. 2004;171(4):353-8.
Understanding Relative Risk, Absolute Risk, and NNT
MedPage Today's KevinMD.com
Benefit vs. social responsibility: a profound ethical dilemma in medicine today by A Country Doctor MD.
What is Number Needed to Treat (NNT)?
Sedgwick P. What is number needed to treat (NNT)? BMJ. 2013;347:f4605
Statistical Pitfalls of Personalized Medicine
Journal Nature comment by Stephen Senn
Personal perils: are numbers needed to treat misleading us as to the scope for personalised medicine?
By Stephen Senn
Problems with NNT
Datamethods
Number (of Whom?) Needed to Treat (with What?): Exposures, Population Interventions, and the Number Needed to Treat.
Westreich D, Mooney SJ. Number (of Whom?) Needed to Treat (with What?): Exposures, Population Interventions, and the Number Needed to Treat. Epidemiology. 2019;30 Suppl 2:S55–S59. Request article via ILLiad.
Knowing NNT
Sketchy EBM video tutorial
Intention to Treat
Sketchy EBM video tutorial
The NNT, Explained
Confidence intervals for the number needed to treat
Altman DG. Confidence intervals for the number needed to treat. BMJ. 1998;317(7168):1309-1312. doi:10.1136/bmj.317.7168.1309
Understanding Treatment Results Series: Number Needed to Treat (NNT)
Numbers needed to treat (NNTs) - calculation, interpretation, advantages and disadvantages
Public Health Action Support Team
NNT and NNH YouTube Video
The Neuroscience Education Institute (NEI)

Number Needed to Harm (NNH)

What is Number Needed to Harm (NNH)?
Sedgwick P. What is number needed to harm (NNH)? BMJ 2013;347:f4869.
How to Calculate Patient-specific Estimates of Benefit and Harm from a RCT
Terry Shaneyfelt, MD, MPH on the EBMTeacher blog
How Results are Presented (2): Risks, Ratios, NNT and NNH
(2007), How results are presented (2): risks, ratios, NNT and NNH. Prescriber, 18: 21–26.

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Journal Club Presentation Resources (Statistics Help): NNT/NNH

Number Needed to Treat (NNT)

Number Needed to Harm (NNH)