Pearls and pitfalls

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Abstract

The instructor will highlight some pearls and pitfalls in statistics that both authors and readers benefit from knowing, based on his personal experience as a writer, reviewer and editorial board member of the EVER Journal, Acta Ophthalmologica. The items discussed, based on examples from recent literature, will include: 1. how to avoid giving a false impression of precision when reporting key results, 2. how to communicate effect size; 3. how to differentiate statistical from clinical significance, 4. how to communicate statistically non-significant results, and 5. how to recognise multiple comparisons and adjust for them. Clear reporting of basic statistics is not difficult as long as one is aware of some basic rules. Putting them into action may improve your manuscripts and reading skills when scanning published evidence to base your practice on.

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