Many standard clinical tables have one or multiple ‘DATE’ field(s), say, in condition_occurrence table, ‘condition_start_date’, it is a required field.
My data is kind of REDCap data, some the text question/answer data, we let it go to Observation table, but there are quite amount of data can go to other tables like ‘drug_exposure’, ‘Measurement’ etc but without dates information.
My questions are:
If the date(s) is missing from source data, can you fake the dates?
If you fake the missing date info, what analysis are not affected and what are affected from Atlas?
If the date info is missing, can you still use OHDSI/OMOP tools like Atlas to do some type of analysis and get meaningful results?
Thanks in advance.