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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 · Evidence assessment

Interaction test

A formal test of whether a treatment effect differs across subgroups. A difference in statistical significance between two subgroups is not an interaction test and the Institute does not report one…

Document identifier
CEI-GT-028
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Interaction test

§1.1Also known as

Test for subgroup differences

§1.2Category

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

§1.3Related terms

  • Subgroup analysis — An analysis restricted to a subset of participants. Hypothesis-generating unless the subgroup and the interaction test were pre-specified, and the Institute records…
Compound Evidence Institute · CEI-GT-028 · https://compoundevidence.com/glossary/interaction-test/ · retrieved 30 July 2026
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