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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

Blinding

The withholding of knowledge of assignment from participants, investigators, outcome assessors or analysts. The Institute records who was blinded rather than describing a trial as blinded without…

Document identifier
CEI-GT-035
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Blinding

§1.1Also known as

Masking

§1.2Category

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

§1.3Related terms

  • Open-label — A design in which assignment is known to participants and investigators. Objective endpoint measurement limits but does not eliminate the resulting risk, because…
  • 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…
Compound Evidence Institute · CEI-GT-035 · https://compoundevidence.com/glossary/blinding/ · retrieved 30 July 2026
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