OHDSI Home | Forums | Wiki | Github

NOTE_NLP CDM Versioning or Duplicate CDM Concepts


We have been working on referencing the NOTE_NLP and its columns, but it appears there are multiple concepts which are identical but only differ in VALID_START_DATE and CDM Concept Code. Is this an intentional versioning issue or are these duplicates?

Any information appreciated.


Hello, @JohnOsborne. There are concepts seem to be identical but they can regard to slightly different situations

Here you go: