FHIR IG analytics

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Source1

{
  "resourceType": "Observation",
  "id": "example-fev1-relative-value",
  "meta": {
    "profile": [
      "https://gematik.de/fhir/hddt/StructureDefinition/hddt-lung-function-testing-complete"
    ]
  },
  "status": "final",
  "valueQuantity": {
    "system": "http://unitsofmeasure.org",
    "value": 75.5,
    "code": "%",
    "unit": "%"
  },
  "code": {
    "coding": [
      {
        "code": "20152-5",
        "system": "http://loinc.org",
        "display": "FEV1 measured/predicted"
      }
    ]
  },
  "effectiveDateTime": "2025-12-28T08:00:00Z",
  "derivedFrom": [
    {
      "reference": "Observation/example-fev1-single-measurement"
    },
    {
      "reference": "Observation/example-fev1-reference-value"
    }
  ],
  "device": {
    "reference": "Device/example-device-peak-flow-meter"
  }
}