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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 · Trial design and conduct

Randomisation

The allocation of participants to study arms by a chance process, which distributes both known and unknown prognostic factors between arms in expectation. The single design feature that most…

Document identifier
CEI-GT-033
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Randomisation

§1.2Category

Trial design and conduct — Terms describing how a clinical study is constructed and run.

§1.3Related terms

  • Allocation concealment — The prevention of foreknowledge of the next allocation by the person enrolling a participant. Distinct from blinding, which concerns knowledge after allocation, and…
  • Stratification — Randomisation within strata defined by prognostic factors, to ensure balance on those factors. Stratification factors should be included in the primary analysis model.
Compound Evidence Institute · CEI-GT-033 · https://compoundevidence.com/glossary/randomisation/ · retrieved 30 July 2026
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