Independent · non-commercial · publishes on a quarterly cycle|Current cycle 2026 Q3
Methodology|Interests|Funding|Corrections
Compound Evidence InstituteEvidence synthesis · established 2023Graded assessments of compounds, trials, methods and supply
Document set current to 30 July 2026
Defined term · Evidence assessment

Evidence of absence

A finding, from a study adequately powered to detect an effect of the size of interest, that no such effect was observed. A negative result from an adequately powered trial is evidence of absence; a…

Document identifier
CEI-GT-007
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Evidence of absence

§1.2Category

Evidence assessment — Terms describing how the Institute judges and reports the strength of evidence.

§1.3Related terms

  • Absence of evidence — A state in which no study adequate to answer a question has been identified. The Institute records an absence of evidence as distinct from evidence of absence: the first…
  • Negative result — A result in which the observed effect does not differ from the comparator by more than chance would produce. Informative where the study was adequately powered for the…
Compound Evidence Institute · CEI-GT-007 · https://compoundevidence.com/glossary/evidence-of-absence/ · retrieved 30 July 2026
Nothing published by the Institute is medical advice, a diagnosis, a prescription, a treatment recommendation or a purchasing recommendation. Compounds supplied for research use are not approved for human or veterinary use in any jurisdiction, and a favourable analytical assessment of a supplier is not a statement that any product is safe or effective. The Institute publishes certainty ratings and never recommendations. No telephone number, messaging handle or ordering channel appears anywhere on this site.