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Marital values - SNOMED vs LOINC


Am trying to map the marital status values to OMOP CDM standard.

When I search for terms such as Single, Married, Divorced, Separated etc, I see at least two entries with exact match. One result is from SNOMED vocab with clinical finding class and other is with LOINC vocab with Answer class. You can see here

How do I decide which one to choose and how choosing one or the other will impact the results (when we participate in network studies)?

Similar confusion for None, NA, etc. Should I always pick observation domain?

Can guide us with this?


Marital status: We haven’t de-duplicated them. Right now you can pick any standard concept you want. We will have to do that.

None, NA: Drop those records. They are flavors of null.