STU3 Candidate

This page is part of the FHIR Specification (v1.8.0: STU 3 Draft). 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)

(No assigned work group)

Maturity Level: 0

Context: Any

URL for this extension:

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

Status: draft. Extension maintained by: Health Level Seven International (Modeling and Methodology)

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

Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	decimal	URL = 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
Documentation for this format

Fulle Structure

Name	Card.	Type	Description & Constraints
extension	0..1	Extension	URL = 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..0
url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty"
valueDecimal	1..1	decimal	Value of extension
Documentation for this format

XML Template

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

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

Summary

Name	Flags	Card.	Type	Description & Constraints
extension		0..1	decimal	URL = 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
Documentation for this format

Full Structure

Name	Card.	Type	Description & Constraints
extension	0..1	Extension	URL = 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..0
url	1..1	uri	"http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty"
valueDecimal	1..1	decimal	Value of extension
Documentation for this format

XML Template

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

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

Constraints

ele-1: All FHIR elements must have a @value or children (xpath: @value|f:*|h:div)
ext-1: Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')]))