All,
According to the cohort_definition docs for CDM v5, we should be using the domain concept id from the DOMAIN table for cohort_definition.subject_concept_id. For cohorts of persons, there appears to be no domain available for conceptually mapping these cohorts (using Vocabulary5.0-20141013).
It seems that the Domains are a mix of table and column specific. Should every clinical table be represented as a Domain?
Bill