Derived Drug Elements

These tables aggregate individual drug_exposure records into clinically meaningful periods — answering "how long was the patient on this medication?" rather than "how many individual orders/administrations were recorded?"

• Drug Era

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  Continuous exposure periods at the ingredient level, aggregated using persistence window gap logic.

  Drug Era

• Dose Era

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  Periods of consistent daily dose. Useful for dose-response studies and tracking dose escalation/reduction.

  Dose Era