BMJ Learning has two interactive online modules on understanding statistics using practical examples to work through to help with your learning.

BMJ Learning provides high-quality CME/CPD and postgraduate training for doctors and other healthcare professionals. It features hundreds of accredited, peer-reviewed learning modules in text, video, and audio formats.

Access is available either by personal or organizational subscription. BMJ Learning is also available free of charge to BMA members.

The statistics modules include:

Understanding statistics 1: presenting data from clinical trials

After completing this module you should:

  • Understand that the same results from a trial can be presented in different ways
  • Appreciate the strengths and weaknesses of using ratios and differences to describe trial results
  • Know how to calculate the number needed to treat (NNT) from a trial
  • Know how to use the baseline risk and relative risk to find out what difference a treatment might make for an individual

Understanding statistics 2: what is statistical uncertainty?

After completing this module you should:

  • Appreciate that results of trials have a direction, size, and statistical uncertainty
  • Understand the information provided by confidence intervals and exact P values
  • Know how to interpret confidence intervals
  • Appreciate when there is an important difference between the treatment and control arms of a trial

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