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Duplicate OMOP CDM field concepts

(Rimma Belenkaya) #1

There are duplicate concepts for many OMOP CDM fields. For example:


This looks like a mistake.

Thank you.

(Christian Reich) #2


Thanks for the catch. This is a mistake. Unchanged fields should not repeat. Will get fixed.

(Christian Reich) #3


I stand corrected. It’s not a mistake. The difference is that these are different: The type changed from INT to BIGINT. Each time something changes a new concept will be created. Pick the one that belongs to the version we are working with, which is the latter in this case. There are CONCEPT_RELATIONSHIP records to all the versions a field or table is valid in, and of course there are the valid dates.