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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{
  "resourceType" : "EvidenceVariable",
  "id" : "282881",
  "meta" : {
    "versionId" : "25",
    "lastUpdated" : "2026-08-31T13:58:41.389Z",
    "profile" : [
      🔗 "http://hl7.org/fhir/uv/ebm/StructureDefinition/variable-definition"
    ]
  },
  "language" : "en",
  "text" : {
    "status" : "empty",
    "div" : "<div xml:lang=\"en\" xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en\">[No data.]</div>"
  },
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  "url" : "https://fevir.net/resources/EvidenceVariable/282881",
  "identifier" : [
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            "system" : "http://terminology.hl7.org/CodeSystem/v2-0203",
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      },
      "system" : "https://fevir.net/FOI",
      "value" : "282881",
      "assigner" : {
        "display" : "Computable Publishing LLC"
      }
    },
    {
      "type" : {
        "text" : "NHANES variable name"
      },
      "value" : "LBXGLU"
    }
  ],
  "version" : "2017-2018",
  "name" : "LBXGLU",
  "title" : "NHANES LBXGLU: Fasting Glucose (mg/dL)",
  "shortTitle" : "Fasting Glucose (mg/dL)",
  "citeAs" : "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" : "active",
  "author" : [
    {
      "name" : "Brian S. Alper"
    }
  ],
  "publisher" : "Computable Publishing LLC",
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      "telecom" : [
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          "system" : "email",
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      ]
    }
  ],
  "description" : "This variable definition is used for an NHANES data dictionary.",
  "useContext" : [
    {
      "code" : {
        "system" : "https://fevir.net/resources/CodeSystem/179423",
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        "display" : "Evidence Communication"
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      "valueCodeableConcept" : {
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  "relatesTo" : [
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            "code" : "derived-from",
            "display" : "Derived From"
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        ]
      },
      "targetUri" : "https://wwwn.cdc.gov/Nchs/Nhanes/2017-2018/GLU_J.htm"
    },
    {
      "type" : {
        "coding" : [
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            "system" : "http://terminology.hl7.org/CodeSystem/artifact-relationship-type",
            "code" : "part-of",
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        ]
      },
      "targetReference" : {
        🔗 "reference" : "Composition/282931",
        "type" : "Composition",
        "display" : "NHANES Plasma Fasting Glucose (GLU_J) Data Dictionary"
      }
    },
    {
      "type" : {
        "coding" : [
          {
            "system" : "http://terminology.hl7.org/CodeSystem/artifact-relationship-type",
            "code" : "depends-on",
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        ]
      },
      "targetReference" : {
        🔗 "reference" : "EvidenceVariable/282898",
        "type" : "EvidenceVariable",
        "display" : "NHANES WTSAF2YR: Fasting Subsample 2 Year MEC Weight"
      }
    }
  ],
  "actual" : true,
  "definition" : {
    "concept" : {
      "text" : "Fasting Glucose (mg/dL) -- code LBXGLU in https://wwwn.cdc.gov/Nchs/Nhanes/2017-2018/GLU_J.htm version 2017-2018"
    },
    "reference" : {
      🔗 "reference" : "Group/282882",
      "type" : "Group",
      "display" : "NHANES LBXGLU: Fasting Glucose (mg/dL) Variable Definition"
    }
  },
  "handling" : {
    "coding" : [
      {
        "system" : "https://fevir.net/sevco",
        "code" : "STATO:0000251",
        "display" : "continuous variable"
      }
    ]
  },
  "conditional" : {
    "description" : "if age >= 12 years",
    "expression" : "age >= 12 years"
  },
  "classifier" : [
    {
      "text" : "Plasma Fasting Glucose (GLU_J)"
    }
  ],
  "dataStorage" : [
    {
      "datatype" : {
        "text" : "SAS floating-point number"
      }
    }
  ],
  "period" : {
    "start" : "2017",
    "end" : "2018"
  },
  "constraint" : [
    {
      "minimumQuantity" : {
        "value" : 2
      }
    }
  ],
  "unacceptableDataHandling" : [
    {
      "text" : "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."
    }
  ]
}