I request support for this problem; thanks in advance.
Assume the following situation (CDM 5.4):
A patient goes to the emergency department on a certain day (d), and the following information is collected: less than three months ago, the patient was prescribed an antibiotic (amoxicillin, 1713332) with a certain dose and for a certain number of days, but the date of the event (drug_exposure) is unknown.
The solution I propose is:
- use the concept observation_concept_id = History of event within three months (1340222) + value_as_concept_id = antibiotic therapy (4085730), and observation_date = d
- link the previous observation event with a new drug_exposure event that registers the antibiotic-amoxicillin with its amount through the observation_event_id/ observation_event_field_concept_id fields)
Problem: what date should be assigned to the new drug_exposure event? Obviously it couldn’t be drug_exposure_start_date = d
Another solution could be:
- use the concept observation_concept_id = History of event within three months (1340222) + value_as_concept_id = amoxicillin (drug, 1713332), and observation_date = d
But there would be no possibility to indicate the dose
Do you propose any alternative?
Many thanks in advance