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- EBM Calculations Explained

NNT Tutorial by Graham Walker. Video (4 min)

How to calculate the number needed to treat by Terry Shaneyfelt. Video (3 min.)

Number needed to treat by Phillip Sedgewick. BMJ 2010; 341:c5614

How to calculate relative risk. Terry Shaneyfelt. Video (3 min.)

Understanding Odds Ratios. Gordon Guyatt, MD. Video (21 min.)

How to Calculate an Odds Ratio. Terry Shaneyfelt. Video (3 min.)

Odds ratios. Philip Sedgewick. BMJ 2010;341, 2010.

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. PMID 1689442.

Confidence Intervals. Terry Shaneyfelt. Video (5 min.)

Stating the meaning of effect size measures in plan English. Duke.

Sensitivity and Specificity. H. Gilbert Welch. Video (8 min.)

What are likelihood ratios and how are they used. Terry Shaneyfelt. Video (10 min.)

EBM Calculators from the Centre for Evidence-Based Medicine, Toronto

EBM and Decision Tools by Alan Schwartz (Diagnostic Test Calculator and NNT/NNH Calculator)