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REDCap data to OMOP-CDM

(Frank Fox) #22

I hope someone can clarify the following for me.

Referring to the Convention-4 for the SURVEY_CONDUCT table: https://github.com/OHDSI/CommonDataModel/wiki/SURVEY_CONDUCT

This convention refers to SURVEY_OCCURRENCE_ID. Where does this attribute exist? and Why is it necessary if the responses in the OBSERVATION are already linked to a survey instance through Convention-1?