Evidence Based Medicine on FHIR Implementation Guide, published by HL7 International / Clinical Decision Support. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ballot3 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ebm/ and changes regularly. See the Directory of published versions

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: NHANES LBXGLU: Fasting Glucose (mg/dL)

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<EvidenceVariable xmlns="http://hl7.org/fhir">
  <id value="282881"/>
  <meta>
    <versionId value="25"/>
    <lastUpdated value="2026-08-31T13:58:41.389Z"/>
    <profile
             value="http://hl7.org/fhir/uv/ebm/StructureDefinition/variable-definition"/>
  </meta>
  <language value="en"/>
  <text>
    <status value="empty"/>
    <div xml:lang="en" xmlns="http://www.w3.org/1999/xhtml" lang="en">[No data.]</div>
  </text>
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             url="http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-publication-status">
    <valueCodeableConcept>
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        <code value="active"/>
        <display value="Active"/>
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  </extension>
  <url value="https://fevir.net/resources/EvidenceVariable/282881"/>
  <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="https://fevir.net/FOI"/>
    <value value="282881"/>
    <assigner>
      <display value="Computable Publishing LLC"/>
    </assigner>
  </identifier>
  <identifier>
    <type>
      <text value="NHANES variable name"/>
    </type>
    <value value="LBXGLU"/>
  </identifier>
  <version value="2017-2018"/>
  <name value="LBXGLU"/>
  <title value="NHANES LBXGLU: Fasting Glucose (mg/dL)"/>
  <shortTitle value="Fasting Glucose (mg/dL)"/>
  <citeAs
          value="NHANES LBXGLU: Fasting Glucose (mg/dL) [Database Entry: FHIR EvidenceVariable Resource]. Contributors: Brian S. Alper [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 282881. Revised 2026-08-31. Available at: https://fevir.net/resources/EvidenceVariable/282881. Computable resource at: https://fevir.net/resources/EvidenceVariable/282881#json."/>
  <status value="active"/>
  <author>
    <name value="Brian S. Alper"/>
  </author>
  <publisher value="Computable Publishing LLC"/>
  <contact>
    <telecom>
      <system value="email"/>
      <value value="support@computablepublishing.com"/>
    </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"/>
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  </useContext>
  <copyright value="https://creativecommons.org/licenses/by-nc-sa/4.0/"/>
  <relatesTo>
    <type>
      <coding>
        <system
                value="http://terminology.hl7.org/CodeSystem/artifact-relationship-type"/>
        <code value="derived-from"/>
        <display value="Derived From"/>
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    </type>
    <targetUri value="https://wwwn.cdc.gov/Nchs/Nhanes/2017-2018/GLU_J.htm"/>
  </relatesTo>
  <relatesTo>
    <type>
      <coding>
        <system
                value="http://terminology.hl7.org/CodeSystem/artifact-relationship-type"/>
        <code value="part-of"/>
        <display value="Part Of"/>
      </coding>
    </type>
    <targetReference>🔗 
      <reference value="Composition/282931"/>
      <type value="Composition"/>
      <display value="NHANES Plasma Fasting Glucose (GLU_J) Data Dictionary"/>
    </targetReference>
  </relatesTo>
  <relatesTo>
    <type>
      <coding>
        <system
                value="http://terminology.hl7.org/CodeSystem/artifact-relationship-type"/>
        <code value="depends-on"/>
        <display value="Depends On"/>
      </coding>
    </type>
    <targetReference>🔗 
      <reference value="EvidenceVariable/282898"/>
      <type value="EvidenceVariable"/>
      <display value="NHANES WTSAF2YR: Fasting Subsample 2 Year MEC Weight"/>
    </targetReference>
  </relatesTo>
  <actual value="true"/>
  <definition>
    <concept>
      <text
            value="Fasting Glucose (mg/dL) -- code LBXGLU in https://wwwn.cdc.gov/Nchs/Nhanes/2017-2018/GLU_J.htm version 2017-2018"/>
    </concept>
    <reference>🔗 
      <reference value="Group/282882"/>
      <type value="Group"/>
      <display
               value="NHANES LBXGLU: Fasting Glucose (mg/dL) Variable Definition"/>
    </reference>
  </definition>
  <handling>
    <coding>
      <system value="https://fevir.net/sevco"/>
      <code value="STATO:0000251"/>
      <display value="continuous variable"/>
    </coding>
  </handling>
  <conditional>
    <description value="if age &gt;= 12 years"/>
    <expression value="age &gt;= 12 years"/>
  </conditional>
  <classifier>
    <text value="Plasma Fasting Glucose (GLU_J)"/>
  </classifier>
  <dataStorage>
    <datatype>
      <text value="SAS floating-point number"/>
    </datatype>
  </dataStorage>
  <period>
    <start value="2017"/>
    <end value="2018"/>
  </period>
  <constraint>
    <minimumQuantity>
      <value value="2"/>
    </minimumQuantity>
  </constraint>
  <unacceptableDataHandling>
    <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."/>
  </unacceptableDataHandling>
</EvidenceVariable>