a structured database that records, tracks, and makes accessible information about Core Outcome Sets (COS)—the agreed-upon minimum outcomes that should be measured and reported in all clinical trials or studies for a particular condition. Such registries promote transparency, reduce duplication, and make it easier for researchers, clinicians, and policy-makers to identify existing or developing Core Outcome Sets.
Synonyms: Core Outcome registry, COS registry
Example
The COMET Initiative maintains a publicly accessible Core Outcome Set (COS) Registry where researchers can register new COS projects, find existing sets for specific conditions (e.g., rheumatoid arthritis, diabetes), and avoid unnecessary duplication of work.