This perfectly works for concepts that sufficiently define the events. But people who build their highly customed CDMs mostly out of 2 bil+ concepts would argue with you. They prefer to look into the standard concept_id fields for the sake of convenience.
What about the survey data problem? People prefer to keep the questions and answers as separate concepts and do not pre-coordinate the whole vocabulary creating tons of new instances. Unless we have the value_source_concept_id field introduced, such sort of analytics on the survey data will not work, unfortunately.
I agree there’s not much value unless people submit their local vocabularies (at least the metadata) to the official OMOP vocabularies to get the concept_id assigned, and then leverage this across the data networks.
But how do Achilles and DQD react to the fact there’s no matching concept? Also, we usually explicitly allow this in the documentation if that’s allowed. Do we?
@Agnes_Wojciechowski Please chime in 