We have source tables such as ‘patient medical history’ or ‘patient familial history’
The old approach:
Before the THEMIS issue #23, when START_DATE and END_DATE must be between OBSERVATION_PERIOD_START_DATE and OBSERVATION_PERIOD_END_DATE we populated SOURCE_VALUE with the name of source table and CONCEPT_ID populate with concept like ‘HISTORY OF…’.
And diagnosis/procedures from patient history was kept in VALUE_AS_STRING and VALUE_AS_CONCEPT_ID fields
field DATE contains OBSERBVATION_PERIOD_START_DATE or date when information about patient history diagnosis/procedures was inputted
The new approach:
After the THEMIS issue above, according to that events can fall outside of an observation period we may use new approach:
keep diagnosis/procedures from patient history in SOURCE_VALUE and CONCEPT_ID fields and use date of diagnosis/procedures from patient history as DATE.
Disadvantage of this approach is that information about data provenance (medical history) would be lost.
Advantage is that we keep real dates of diagnosis/procedures of patient medical history.
So questions are:
- For the new approach is it important that diagnosis/procedures are patient history?
- Do we need change the approach from the old to new?
- Or we may choose approach depending on the percent of records?
- Or any other way?
Thank you in advance!