This page is part of the FHIR Specification (v0.0.82: DSTU 1). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4 R3 R2

Extension Standard Deviation (same units as the quantity) - Definition

URL for this extension: 

http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty

Status: draft. Extension maintained by: HL7

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).

Context of Use: Use on data type: Quantity

usage info: insert a list of places where this extension is used

Extension Content

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. extensionExtensionURL = http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty
Standard Deviation (same units as the quantity): 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).
Use on data type: Quantity
... extension 0..*ExtensionAdditional Content defined by implementations
... url 1..1uriidentifies the meaning of the extension
Fixed Value: http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty
... valueDecimal 0..1decimalValue of extension

XML Template

<!-- Standard Deviation (same units as the quantity) -->doco

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty" >
  <!-- from Element: extension -->
 <valueDecimal  value="[decimal]"/><!-- 0..1 Value of extension
</extension>

JSON Template

{ // Standard Deviation (same units as the quantity)
  // from Element: extension
    "url" : "http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty", // R! 
    "valueDecimal" : <decimal> //Value of extension
  }

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. extensionExtensionURL = http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty
Standard Deviation (same units as the quantity): 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).
Use on data type: Quantity
... extension 0..*ExtensionAdditional Content defined by implementations
... url 1..1uriidentifies the meaning of the extension
Fixed Value: http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty
... valueDecimal 0..1decimalValue of extension

XML Template

<!-- Standard Deviation (same units as the quantity) -->doco

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty" >
  <!-- from Element: extension -->
 <valueDecimal  value="[decimal]"/><!-- 0..1 Value of extension
</extension>

JSON Template

to do