MyHealth@Eu Laboratory Report
0.1.1 - trial-use 150

This page is part of the MyHealth@Eu Laboratory Report (v0.1.1: Wave 8) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version. For a full list of available versions, see the Directory of published versions

Data Type Profile: RatioMyHealthEu - Detailed Descriptions

Active as of 2025-03-20

Definitions for the Ratio-lab-myhealtheu data type profile.

Guidance on how to interpret the contents of this table can be found here

0. Ratio
Definition

A measured ratio (or a ratio that can potentially be measured) and uncertainty of the measurement. This profile imposes that the code system for units be UCUM.


A relationship of two Quantity values - expressed as a numerator and a denominator.

ShortA measured ratio using UCUMA ratio of two Quantity values - a numerator and a denominator
Comments

The Ratio datatype should only be used to express a relationship of two numbers if the relationship cannot be suitably expressed using a Quantity and a common unit. Where the denominator value is known to be fixed to "1", Quantity should be used instead of Ratio.

Control0..*
This element is affected by the following invariants: ele-1
Is Modifierfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
rat-1: Numerator and denominator SHALL both be present, or both are absent. If both are absent, there SHALL be some extension present ((numerator.empty() xor denominator.exists()) and (numerator.exists() or extension.exists()))
rat-1: Numerator and denominator SHALL both be present, or both are absent. If both are absent, there SHALL be some extension present ((numerator.empty() xor denominator.exists()) and (numerator.exists() or extension.exists()))
2. Ratio.extension:uncertainty
Slice Nameuncertainty
Definition

The primary measure of variance/uncertainty of the value (the square root of the sum of the squares of the differences between all data points and the mean).

ShortStandard Deviation (same units as the quantity)
Comments

standardDeviation has the same units as the quantity. It is used to normalize the data for computing the distribution function. Applications that cannot deal with probability distributions can still get an idea about the confidence level by looking at standardDeviation.

Control0..1
TypeExtension(Uncertainty) (Extension Type: decimal)
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
4. Ratio.extension:uncertaintyType
Slice NameuncertaintyType
Definition

A code specifying the type of probability distribution for the uncertainty.

ShortProbability Distribution Type for uncertainty
Comments

This is only meaningful if there is also an uncertainty extension. If there is an uncertainty extension with no type, this means that the probability distribution type is unknown. In that case, the uncertainty has the meaning of an informal guess.

Control0..1
TypeExtension(Uncertainty type) (Extension Type: code)
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
6. Ratio.numerator
Definition

A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies. This profile imposes that the code system for units be UCUM.


The value of the numerator.

ShortA measured amount using UCUMNumerator value
Comments

The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

Control0..1
This element is affected by the following invariants: ele-1
TypeQuantity(Quantity: Laboratory)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
qty-3: If a code for the unit is present, the system SHALL also be present (code.empty() or system.exists())
8. Ratio.denominator
Definition

A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies. This profile imposes that the code system for units be UCUM.


The value of the denominator.

ShortA measured amount using UCUMDenominator value
Comments

The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.

Control0..1
This element is affected by the following invariants: ele-1
TypeQuantity(Quantity: Laboratory)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
qty-3: If a code for the unit is present, the system SHALL also be present (code.empty() or system.exists())