Documentation: Relative time interval is made a subclass of TimeInterval so that VMR classes can be used in encoding guideline action specifications (e.g. observation made within 24 hours, as opposed to observation made at a particular time point).

Superclasses

• RelativeIVL
• TimeInterval

Subclasses

• None

Types

• HL7_Data_Type

Template Slots
	Slot Name	Documentation	Type	Cardinality
	for_how_long	An interval of quantity (e.g. length of time)	Variable, PhysicalQuantity	0:1
	high	This is the high limit of the interval.	PointInTime, Variable, Function	0:1
	highClosed	Specifies whether the high limit is included in the interval (interval is closed) or excluded from the interval (interval is open).	Boolean	0:1
	label	A short human readable string indicating the content of the instancehuman-readable string for the instance	String	0:1
	low	This is the low limit of the interval.	PointInTime, Variable, Function	0:1
	lowClosed	Specifies whether the low limit is included in the interval (interval is closed) or excluded from the interval (interval is open).	Boolean	0:1
	nullFlavor	If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.	Class	0:1
	point	The anchor point for specifying relative time point (or, more generally) an relative interval	PointInTime, Variable	0:1
	polarity	before or after a time point	{before, after}	1:1

Own Slots
	Slot Name	Value
	alias	RelativeIVL
	semantic_properties
	:ROLE	Concrete
	:SLOT-CONSTRAINTS

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