{
  "resourceType": "Evidence",
  "id": "example-quoted-source",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "cds"
    }
  ],
  "title": "Quoted Source: Prevalence of PASC at 30 days",
  "status": "active",
  "publisher": "HL7 International / Clinical Decision Support",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/dss"
        }
      ]
    }
  ],
  "description": "An example of using the relatedArtifact element to quote a line of text from the evidence source.",
  "variableDefinition": [
    {
      "description": "People with a history of COVID-19 who were not hospitalized (Arizona CoVHORT)",
      "variableRole": "population"
    },
    {
      "description": "Post-acute sequelae of COVID-19",
      "variableRole": "outcome"
    }
  ],
  "studyDesign": [
    {
      "coding": [
        {
          "system": "https://fevir.net/sevco",
          "code": "SEVCO:01002",
          "display": "Observational research"
        },
        {
          "system": "https://fevir.net/sevco",
          "code": "SEVCO:01028",
          "display": "Longitudinal data collection"
        }
      ]
    }
  ],
  "statistic": [
    {
      "description": "Prevalence 68.7% (95% Confidence interval 63.4% to 73.9%)",
      "statisticType": {
        "coding": [
          {
            "system": "https://fevir.net/resources/CodeSystem/27270",
            "code": "STATO:0000412",
            "display": "prevalence"
          }
        ]
      },
      "quantity": {
        "value": 68.7,
        "unit": "%",
        "system": "http://unitsofmeasure.org",
        "code": "%"
      },
      "attributeEstimate": [
        {
          "description": "95% Confidence interval 63.4% to 73.9%",
          "type": {
            "coding": [
              {
                "system": "https://fevir.net/resources/CodeSystem/27270",
                "code": "TBD:0000059",
                "display": "Confidence interval"
              }
            ]
          },
          "level": 0.95,
          "range": {
            "low": {
              "value": 63.4,
              "unit": "%",
              "system": "http://unitsofmeasure.org",
              "code": "%"
            },
            "high": {
              "value": 73.9,
              "unit": "%",
              "system": "http://unitsofmeasure.org",
              "code": "%"
            }
          }
        }
      ]
    }
  ],
  "meta": {
    "tag": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-ActReason",
        "code": "HTEST",
        "display": "test health data"
      }
    ]
  }
}