What does “no matching concept” mean?


The field “no matching concept” means there are no data, or accessible data, within the All of Us dataset to populate the field. This results from the concept of interest being suppressed due to our participant privacy policy or skip codes not being auto populated. Some examples of suppressed fields are race and ethnicity subgroups and free text responses. You can find all of the generalized and suppressed fields in our Data Dictionary. In a few cases, a skip code did not auto populate when a participant saw a question and chose not to answer it. As a result this code has to be backfilled, which should be completed in the near future. 

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