@Christian_Reich
Thank you,
I have a category, csDMARD, which includes multiple ATC codes. How should I represent this in OMOP? Specifically, how can I store information in OMOP to indicate that five drugs with different ATC codes, for example, belong to this category?
In OMOP, I am trying to categorize these drugs in the drug exposure table and store information that links each drug to its respective category. For analysis, the analysts are primarily concerned with the drug categories rather than the individual ingredients.