a health outcome domain identified as potentially important but not yet confirmed as part of a core set. Candidate domains undergo systematic evaluation through consensus-building processes—such as literature reviews, patient research partner (PRP) input, and Delphi rounds.
Synonyms: Preliminary Domain
Example
In early work on psoriatic arthritis, “sleep disturbance” was identified as a candidate domain. It was considered potentially important to patients and clinicians but required further evaluation before inclusion in the core domain set.