I’ve got a patient given 1000 mg of the drug ACETAMINOPHEN 500 MG PO TABS (concept_id:19020053) (concept_class_id: Clinical Drug). In the drug_strength table, this has an Amount_value of 500 and an Amount_Unit_concept_id of 8576 (mg).
In the drug_exposure.quantity field, do I store the number of tablets (2) or the amount in milligrams (1000)?
I’ve got a Clinical Drug of HYDROCODONE-ACETAMINOPHEN 10-325 MG PO TABS (concept_id: 40162511). According to How to Calculate Drug Dose drug_dose.knit, this should go in the drug_exposure table as two entries (HYDROCODONE and ACETAMINOPHEN). These would then be at the Ingredient level. But the advice for concept_class_id is to store it at the level with the most information (ie clinical drug) and only use Ingredient as a last resort.
Do I store HYDROCODONE-ACETAMINOPHEN 10-325 MG PO TABS with a Quantity of 1, or two record with a value of 325 and 10, respectively?