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Compound Evidence InstituteEvidence synthesis · established 2023Graded assessments of compounds, trials, methods and supply
Document set current to 30 July 2026
Defined term · Statistics and inference

Effect size

The magnitude of a difference, expressed on the scale of the outcome or standardised. A significant result with an effect size below the minimal clinically important difference is a detected…

Document identifier
CEI-GT-081
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Effect size

§1.2Category

Statistics and inference — Terms describing how effects are estimated and how uncertainty is expressed.

§1.3Related terms

  • Minimal clinically important difference — The smallest change in an outcome that a patient would identify as meaningful. Frequently contested and frequently unavailable, and the Institute names the source of any…
Compound Evidence Institute · CEI-GT-081 · https://compoundevidence.com/glossary/effect-size/ · retrieved 30 July 2026
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