Models a ratio of values, i.e. where the numerator and denominator are both pure numbers. The _valid_proportion_kind_ property of the PROPORTION_KIND class is used to control the type attribute to be one of a defined set.

Used for recording titers (e.g. 1:128), concentration ratios, e.g. Na:K (unitary denominator), albumin:creatinine ratio, and percentages, e.g. red cell distirbution width (RDW).

Misuse: Should not be used to represent things like blood pressure which are often written using a '/' character, giving the misleading impression that the item is a ratio, when in fact it is a structured value. Similarly, visual acuity, often written as (e.g.) "6/24" in clinical notes is not a ratio but an ordinal (which includes non-numeric symbols like CF = count fingers etc). Should not be used for formulations.

unique id for the element within a resource (for internal references)

May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Primitive value for code

Numerator of ratio

Denominator of ratio.

Indicates semantic type of proportion, including percent, unitary etc.

Precision to which the _numerator_ and _denominator_ values of the proportion are expressed, in terms of number of decimal places. The value 0 implies an integral quantity. The value -1 implies no limit, i.e. any number of decimal places.

Optional normal range.

Optional tagged other reference ranges for this value in its particular measurement context.

Models a ratio of values, i.e. where the numerator and denominator are both pure numbers. The _valid_proportion_kind_ property of the PROPORTION_KIND class is used to control the type attribute to be one of a defined set.

Used for recording titers (e.g. 1:128), concentration ratios, e.g. Na:K (unitary denominator), albumin:creatinine ratio, and percentages, e.g. red cell distirbution width (RDW).

Misuse: Should not be used to represent things like blood pressure which are often written using a '/' character, giving the misleading impression that the item is a ratio, when in fact it is a structured value. Similarly, visual acuity, often written as (e.g.) "6/24" in clinical notes is not a ratio but an ordinal (which includes non-numeric symbols like CF = count fingers etc). Should not be used for formulations.

Numerator of ratio

Denominator of ratio.

Indicates semantic type of proportion, including percent, unitary etc.

Precision to which the _numerator_ and _denominator_ values of the proportion are expressed, in terms of number of decimal places. The value 0 implies an integral quantity. The value -1 implies no limit, i.e. any number of decimal places.

Optional normal range.

Optional tagged other reference ranges for this value in its particular measurement context.

Models a ratio of values, i.e. where the numerator and denominator are both pure numbers. The _valid_proportion_kind_ property of the PROPORTION_KIND class is used to control the type attribute to be one of a defined set.

Used for recording titers (e.g. 1:128), concentration ratios, e.g. Na:K (unitary denominator), albumin:creatinine ratio, and percentages, e.g. red cell distirbution width (RDW).

Misuse: Should not be used to represent things like blood pressure which are often written using a '/' character, giving the misleading impression that the item is a ratio, when in fact it is a structured value. Similarly, visual acuity, often written as (e.g.) "6/24" in clinical notes is not a ratio but an ordinal (which includes non-numeric symbols like CF = count fingers etc). Should not be used for formulations.

unique id for the element within a resource (for internal references)

May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Primitive value for code

Numerator of ratio

Denominator of ratio.

Indicates semantic type of proportion, including percent, unitary etc.

Precision to which the _numerator_ and _denominator_ values of the proportion are expressed, in terms of number of decimal places. The value 0 implies an integral quantity. The value -1 implies no limit, i.e. any number of decimal places.

Optional normal range.

Optional tagged other reference ranges for this value in its particular measurement context.