3.1.5 Orphan concepts

[ginberg]

A table showing the concept(s) observed in the datasource that are not included in a concept set of a cohort, but maybe considered. The following logic is used to identify concepts that might be relevant:

Given a concept set expression, find all included concepts.

Find all names of those concepts, including synonyms, and the names of source concepts that map to them.

Search for concepts (standard and source) that contain any of those names as substring.

Filter those concepts to those that are not in the original set of concepts (i.e. orphans).

Restrict the set of orphan concepts to those that appear in the CDM data source as either source concept or standard concept.