{
  "resourceType": "Observation",
  "id": "demo-spiro-mbr-1-3",
  "status": "final",
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "19926-5",
        "display": "FEV1/​FVC"
      }
    ]
  },
  "subject": {
    "reference": "Patient/demo-patient-1"
  },
  "effectiveDateTime": "2018-03-12",
  "valueQuantity": {
    "value": 0.82,
    "system": "http://unitsofmeasure.org",
    "code": "1"
  }
}