temporalRelationship
Expresses a before or after relationship in an interval operator phrase, optionally with an on or qualifier for inclusive boundary comparison. Supports both prefix (on or before) and postfix (before or on) forms.
Examples
Strictly before
Encounter.period before "Measurement Period"
On or before (inclusive)
Encounter.period on or before "Measurement Period"
After or on (postfix form)
FollowUp after or on end of Encounter.period
EBNF
temporalRelationship
: ('on or'? ('before' | 'after'))
| (('before' | 'after') 'or on'?)
;