Hi Gerard,
I don’t have time to look through the use cases right now, but I thought I
should give a general outline to how we handle negation in openEHR archetypes.
Basically, there isn’t a single way that works for all use cases, but we’ve
worked out a few patterns that seem to work:
·
It strikes me that some of those 'use cases' are summaries, so the semantics
should take into account the components.
For example:
'No known allergy’ has a multiplicity of possible derivations: 'allergy status
not tested', ‘never taken penicillin’, 'never eaten peanuts’ , ’allergy status
not in
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