Ratio

Base StructureDefinition for Ratio Type: A relationship of two Quantity values - expressed as a numerator and a denominator.

Complex data type in FHIR R4. Maturity: Not stated.

Elements

Element	Type	Cardinality	Description
id	string	0..1	Unique id for inter-element referencing
extension	Extension	0..*	Additional content defined by implementations
numerator	Quantity	0..1	Numerator value
denominator	Quantity	0..1	Denominator value

Reference

Official FHIR R4 specification: Ratio.