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Videos and webinars
Explore laboratory quality and practical statistics through recorded presentations, clear explanations and worked examples.
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Recorded presentations
Webinars with Stephen MacDonald
Three presentations from the Randox series on applied statistics in the medical laboratory. Watch in order or choose the subject relevant to your work. Open a recording below to play it on this page.
Originally presented for Randox Laboratories and hosted on its official YouTube channel. These are archive recordings; use the linked resources for further reading. English captions are automatically generated by YouTube and may contain errors.
Randox webinar · Session 1
Common laboratory statistics for performance of laboratory tests
Statistics and interpreting results
An introduction to mean, variance, standard deviation and coefficient of variation, followed by bias, imprecision and their relationship to total error and measurement uncertainty.
Stephen MacDonald · 66 min
Published on YouTube:
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Randox webinar · Session 2
Choosing analytical performance specifications
Analytical performance specifications
Why laboratories need performance specifications, how clinical outcomes and biological variation inform model selection, and how specifications can support activities such as internal quality control.
Stephen MacDonald · 60 min 26 sec
Published on YouTube:
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Randox webinar · Session 3
Diagnostic accuracy
Statistics and interpreting results
An introduction to sensitivity, specificity, ROC analysis and likelihood ratios, with discussion of analytical and clinical accuracy, manufacturer claims, verification and validation.
Stephen MacDonald · 55 min 41 sec
Published on YouTube:
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Ways to learn
From explanation to application
This collection begins with recorded webinars. Short concept videos and practical tutorials will be added as the collection develops.
Webinars
Longer presentations that explore a subject, its evidence and its implications for laboratory practice.
Concept videos
Focused explanations of an idea, relationship or common source of confusion.
Practical tutorials
Worked examples showing how to approach an analysis, interpret findings or investigate a laboratory question.
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Guides and practical resources
Browse explanations, calculators and downloads across the eight laboratory topics.
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