Number Needed to Treat
How to calculate the number-needed-to-treat Terry Shaneyfelt. video 3 min
The NNT Tutorial Grahm Walker video 4 min
Absolute Risk Reduction, Relative Risk Reduction, Relative Risk
How to calculate a relative risk Terry Shaneyfelt. video 3 min
Basic Statistics for Clinicians: Assessing the effects of treatment: measures of association CMAJ. 1995 Feb 1;152(3):351-7. Erratum in: Can Med Assoc J 1995 Mar 15;152(6):813.
Odds Ratios
Gordon Guyatt explaining odds ratios video 21 min
How to calculate an odds ratio Terry Shaneyfelt. video 3 min
Intention-to-Treat
Intention-to-treat analysis - What it is and why is it important? Terry Shaneyfelt video 5min
What is intention-to-treat analysis? Allan Shaughnessy video 1 min
Forest Plots
How to interpret a forest plot. Terry Shaneyfelt video 5 min
Interpreting and understanding meta-analysis graphs--a practical guide. Aust Fam Physician. 2006 Aug;35(8):635-8. PubMed PMID: 16894442
Confidence Intervals
Confidence intervals. Terry Shaneyfelt video 5 min
Basic Statistics for Clinicians: Interpreting study results: confidence intervals CMAJ. 1995 Jan 15;152(2):169-73.
Sensitivity, Specificity and Likelihood Ratios
Sensitivity & specificity H. Gilbert Welch video 8 min
How to calculate sensitivity Terry Shaneyfelt video 4 min
How to calculate specificity Terry Shaneyfelt video 3 min
What are likelihood ratios and how are they used Terry Shaneyfelt video 10 min
More...
more videos by Terry Shaneyfelt, M.D.
more videos by Allan Shaughnessy
Stating the meaning of effect size measures in plain English
Endgames statistical series in BMJ by Philip Sedgwick
