Documentation: A quantity constructed as the quotient of a numerator quantity divided by a denominator quantity. Common factors in the numerator and denominator are not automatically cancelled out. The RTO data type supports titers (e.g., "1:128") and other quantities produced by laboratories that truly represent ratios. Ratios are not simply "structured numerics", particularly blood pressure measurements (e.g. "120/60") are not ratios. In many cases the REAL should be used instead of the RTO.

Superclasses

• Quantity

Subclasses

• None

Types

• HL7_Data_Type

Template Slots
	Slot Name	Documentation	Type	Cardinality
	denominator	The quantity that devides the numerator in the ratio. The default is the integer number 1 (one.) The denominator must not be zero.	String	0:1
	label	A short human readable string indicating the content of the instancehuman-readable string for the instance	String	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
	numerator	The quantity that is being divided in the ratio. The default is the integer number 1 (one.)	String	0:1

Own Slots
	Slot Name	Value
	alias	RTO
	semantic_properties	N numerator; D denominator;
	:ROLE	Concrete
	:SLOT-CONSTRAINTS

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