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Resources for Medical Students & Clinicians

My Notes & PowerPoint Files

Featured Items

Resources from the British Medical Journal

Resources from the Canadian Medical Association Journal

Kate Anne Levin's Study Design Series in Evidence-Based Dentistry

Online Calculators

  • Stats Calculator from University of Toronto's Centre for Evidence-Based Medicine. It includes the following options:
    • Diagnostic Test - calculates the Sensitivity, Specificity, PV+, PV-, LR+, and LR-
    • Prospective Study - calculates the Relative Risk (RR), Absolute Relative Risk (ARR), and Number Needed to Treat (NNT)
    • Case-control Study - calculates the Odds Ratio (OR)
    • Randomized Control Trial (RCT) - calculates the Relative Risk Reduction (RRR), ARR, and NNT
  • BrightStat.com -- Free cloud-based statistical analysis.  (Requires you to create an account.)
  • John Pezzullo's Interactive Statistical Calculation Pages. This is a great site with lots of links to good online calculators.
  • GraphPad's QuickCalcs page--another site with some very nice calculators.
  • StatTools.  A collection of statistical programs used in clinical research and quality assurance.
  • OpenEpi -- Open Source Epidemiologic Statistics for Public Health.
  • EpiTools -- Epidemiological calculators provided by the good folks at AusVet Animal Health Services.  (Good on ya, mates!)
  • Random number generators
    • RANDOM.ORG - "RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs."
    • Jerry Dallal's Randomization Page.  Jerry is a Senior Scientist & Chief of the Biostatistics Unit at the USDA Jean Mayer Human Nutrition Research Center on Aging, and also a Professor in the Gerald J & Dorothy R Friedman School of Nutrition Science and Policy.  His CV can be seen here.  (See also his Little Handbook of Statistical Practice.)  
  • Sample size estimation

Other Resources

Last modified on 24-Apr-2017