Welcome to OHDSI! - Please introduce yourself

Hello Group,

I am Amit Kumar, a CDISC SDTM Mapping Specialist working in Cytel India. Right now I have got one OMOP CDM Project for ETL creation for an observational study.

We are generating DRUG_EXPOSURE Table in which I have some doubts ,

  1. Should we collect all Drug Exposure data captured in raw data like Prior Medication, Study Medication ??
  2. Most of Medication History data does not captures date what can we about that.?
    3.What are refill? can we keep them blank?
  3. How to generate drug_exposure_id ?

Kindly guide me as our team is doing it for first time.