Non O blood types have been suggested as possible risk factors for covid-19 infection. In the synthetic dataset, measurement_concept_id = 3003694 ("ABO Blood type") is associated with eight different values of value_as_concept_id, but I can't seem to find any information relating these values to the corresponding blood types. Can anyone help here?

Created by Bruce Cragin Bcragin
Thank you!
Searching the ID you provided on Athena, I see that there are eight values as you said. They mean the blood type + Rh group. See: Check the "has answer" row on the right side.

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