Evidence Based Medicine on FHIR Implementation Guide
1.0.0-ballot2 - STU 1 ballot International flag

This page is part of the Evidence Based Medicine on FHIR Implementation Guide (v1.0.0-ballot2: STU1 Ballot 2) based on FHIR (HL7® FHIR® Standard) v6.0.0. No current official version has been published yet. For a full list of available versions, see the Directory of published versions

: NHANES LBDGLUSI: Fasting Glucose (mmol/L) - XML Representation

Page standards status: Informative

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<EvidenceVariable xmlns="http://hl7.org/fhir">
  <id value="282897"/>
  <meta>
    <versionId value="16"/>
    <lastUpdated value="2025-02-24T13:56:04.821Z"/>
    <profile
             value="http://hl7.org/fhir/uv/ebm/StructureDefinition/variable-definition"/>
  </meta>
  <text>
    <status value="empty"/>
    <div xmlns="http://www.w3.org/1999/xhtml">[No data.]</div>
  </text>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-definition-modifier">
    <extension url="code">
      <valueCodeableConcept>
        <text value="Unit of measure"/>
      </valueCodeableConcept>
    </extension>
    <extension url="value">
      <valueCodeableConcept>
        <coding>
          <system value="http://unitsofmeasure.org"/>
          <code value="mmol/L"/>
          <display value="mmol/L"/>
        </coding>
      </valueCodeableConcept>
    </extension>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-definition-modifier">
    <extension url="code">
      <valueCodeableConcept>
        <text value="Data transformation method"/>
      </valueCodeableConcept>
    </extension>
    <extension url="value">
      <valueExpression>
        <description
                     value="The fasting glucose value in mg/dL (LBXGLU) was converted to mmol/L (LBDGLUSI) by multiplying by 0.05551 (rounded to 3 decimals)."/>
        <expression value="LBDGLUSI = LBXGLU * 0.05551"/>
      </valueExpression>
    </extension>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-conditional">
    <valueExpression>
      <description value="if age &gt;= 12 years"/>
      <expression value="age &gt;= 12 years"/>
    </valueExpression>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-classifier">
    <valueCodeableConcept>
      <text value="Plasma Fasting Glucose (GLU_J)"/>
    </valueCodeableConcept>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-data-storage">
    <extension url="datatype">
      <valueCodeableConcept>
        <text value="SAS floating-point number"/>
      </valueCodeableConcept>
    </extension>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-period">
    <valuePeriod>
      <start value="2017"/>
      <end value="2018"/>
    </valuePeriod>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-data-cleaning">
    <valueCodeableConcept>
      <text
            value="Participants whom provided blood specimen but did not meet the 8 to less than 24 hour fasting criteria (n=180) have the sample weight value assigned as '0' (WTSAF2YR =0) as well. Glucose measurements for these 180 participants are included in the dataset. However, to include these data in the analysis, a reweighting would be required."/>
    </valueCodeableConcept>
  </extension>
  <extension url="http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to">
    <extension url="type">
      <valueCode value="cite-as"/>
    </extension>
    <extension url="targetMarkdown">
      <valueMarkdown
                     value="NHANES LBDGLUSI: Fasting Glucose (mmol/L) [Database Entry: FHIR EvidenceVariable Resource]. Contributors: Brian S. Alper [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 282897. Revised 2024-11-19. Available at: https://fevir.net/resources/EvidenceVariable/282897. Computable resource at: https://fevir.net/resources/EvidenceVariable/282897#json."/>
    </extension>
  </extension>
  <extension url="http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to">
    <extension url="type">
      <valueCode value="derived-from"/>
    </extension>
    <extension url="targetCanonical">
      <valueCanonical
                      value="https://wwwn.cdc.gov/Nchs/Nhanes/2017-2018/GLU_J.htm"/>
    </extension>
  </extension>
  <extension url="http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to">
    <extension url="type">
      <valueCode value="part-of"/>
    </extension>
    <extension url="targetReference">
      <valueReference>🔗 
        <reference value="Composition/282931"/>
        <type value="Composition"/>
        <display
                 value="NHANES Plasma Fasting Glucose (GLU_J) Data Dictionary"/>
      </valueReference>
    </extension>
  </extension>
  <extension url="http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to">
    <extension url="type">
      <valueCode value="derived-from"/>
    </extension>
    <extension url="targetReference">
      <valueReference>🔗 
        <reference value="EvidenceVariable/282881"/>
        <type value="EvidenceVariable"/>
        <display value="NHANES LBXGLU: Fasting Glucose (mg/dL)"/>
      </valueReference>
    </extension>
  </extension>
  <extension url="http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to">
    <extension url="type">
      <valueCode value="similar-to"/>
    </extension>
    <extension url="targetReference">
      <valueReference>🔗 
        <reference value="EvidenceVariable/282881"/>
        <type value="EvidenceVariable"/>
        <display value="NHANES LBXGLU: Fasting Glucose (mg/dL)"/>
      </valueReference>
    </extension>
  </extension>
  <extension url="http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to">
    <extension url="type">
      <valueCode value="depends-on"/>
    </extension>
    <extension url="targetReference">
      <valueReference>🔗 
        <reference value="EvidenceVariable/282898"/>
        <type value="EvidenceVariable"/>
        <display
                 value="NHANES WTSAF2YR: Fasting Subsample 2 Year MEC Weight"/>
      </valueReference>
    </extension>
  </extension>
  <url value="https://fevir.net/resources/EvidenceVariable/282897"/>
  <identifier>
    <type>
      <coding>
        <system value="http://terminology.hl7.org/CodeSystem/v2-0203"/>
        <code value="ACSN"/>
        <display value="Accession ID"/>
      </coding>
      <text value="FEvIR Object Identifier"/>
    </type>
    <system value="urn:ietf:rfc:3986"/>
    <value value="https://fevir.net/FOI/282897"/>
    <assigner>
      <display value="Computable Publishing LLC"/>
    </assigner>
  </identifier>
  <identifier>
    <type>
      <text value="NHANES variable name"/>
    </type>
    <value value="LBDGLUSI"/>
  </identifier>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.40.44.24.48"/>
  </identifier>
  <version value="1.0.0-ballot2"/>
  <name value="LBDGLUSI"/>
  <title value="NHANES LBDGLUSI: Fasting Glucose (mmol/L)"/>
  <shortTitle value="Fasting Glucose (mmol/L)"/>
  <status value="active"/>
  <date value="2025-03-28T17:11:38+00:00"/>
  <publisher value="HL7 International / Clinical Decision Support"/>
  <contact>
    <name value="HL7 International / Clinical Decision Support"/>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/dss"/>
    </telecom>
  </contact>
  <description
               value="This variable definition is used for an NHANES data dictionary."/>
  <useContext>
    <code>
      <system value="https://fevir.net/resources/CodeSystem/179423"/>
      <code value="evidence-communication"/>
      <display value="Evidence Communication"/>
    </code>
    <valueCodeableConcept>
      <coding>
        <system value="https://fevir.net/resources/CodeSystem/179423"/>
        <code value="VariableDefinition"/>
        <display value="VariableDefinition"/>
      </coding>
    </valueCodeableConcept>
  </useContext>
  <copyright value="https://creativecommons.org/licenses/by-nc-sa/4.0/"/>
  <author>
    <name value="Brian S. Alper"/>
  </author>
  <actual value="true"/>
  <handling value="continuous"/>
</EvidenceVariable>