Frequency of a tablet(drug) to be taken per day - Mapping field

Implementers
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Hello Everyone,

I am trying to map the raw drug data from hospital to the 'Drug_exposure" table in CDM. Can anyone let me know under which field does a value like “To be taken twice a day, To be taken 3 a day”. Please note the raw data in the above case could also be 2 (twice a day), 3(thrice a day). Should it be mapped to “Sig” column? Am I right?

Looking forward to your help

Thanks
Selva

2

@SELVA_MUTHU_KUMARAN:

Yes, you are right. We haven’t done anything to standardize this field, yet. Will have to happen soon.

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I think it will also be a great idea to have a separate field where we can calculate the days of supply value, if it does not exist in the data: days of supply=actual number of tablets patients received/Sig (to be taken n times/day). Or if Sig value does not exist in the data: Sig=actual number of tablets patients received/days of supply. What do you think?

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Agreed. Want to carve out how it would work and make a proposal?

5

Dear all:
I was wondering, if i want to show how many times to take medicine a day in “DRUG_EXPOSURE” table, how to implement it ?
I try to understand the document (OMOP CDM v6.0), but i didn’t find good solution yet.

Do you have any updates about this question?
Or did i missing something new?

Thank you for your time.

May

6

First question as always, do you have an analytic use case for this information?
Assuming you do, you have two choices, use drug_exposure.sig, “This is the verbatim instruction for the drug as written by the provider” or add a column, local to your CDM, to hold how many times a day to take the medication. Neither of these options will be accessible to the standard OHDSI analytic tools, but will make the information available in your CDM.

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Hi Don Torok(@DTorok ):
Thank you for your reply.

Frequency of taking medicine maybe is kind of reason to impact treatment process or something else (I’m not sure), that is why I want to add this field.
Maybe I will choose second one , but I’m going to discuss with my partner first.

Thanks again.

May