Historical medication data have blank start_date and end_date in it. Due to which Drug_Era is not showing correct results.
Shall I put such data in drug_exposure entity or can we utilize such data for any other OMOP entity?
Data set doesn’t have the dates but it contains relevant information required for drug_exposure like SIG, Dispense Qty, Refills etc.
As dates are not available, how can I utilize such information for Drug_Era and Drug_Exposure?