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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

Stratification

Randomisation within strata defined by prognostic factors, to ensure balance on those factors. Stratification factors should be included in the primary analysis model.

Document identifier
CEI-GT-058
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Stratification

§1.2Category

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

§1.3Related terms

  • 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…
Compound Evidence Institute · CEI-GT-058 · https://compoundevidence.com/glossary/stratification/ · retrieved 30 July 2026
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