Do you know what the values for drug_type_concept_id variable in the drug_exposure table represent?
38000175-Prescription dispensed in pharmacy
38000177 Prescription written
43542358-Physician administered drug(identified from EHR observation)
Do you know how these values are derived? Is there overlap? I thought all drugs are administered by physicians (43542358? Or is there a distinction (Nurse practitioner vs Doctor?)
Is there a place with documentation about how the OMOP variables such as the one above were derived/represent?