{
  "resourceType": "StructureDefinition",
  "id": "iso21090-uncertainty",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "fhir"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 1
    }
  ],
  "url": "http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty",
  "name": "uncertainty",
  "status": "draft",
  "date": "2012-06-24",
  "publisher": "Health Level Seven International (Modeling and Methodology)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/mnm"
        }
      ]
    }
  ],
  "description": "The primary measure of variance/uncertainty of the value (the square root of the sum of the squares of the differences between all data points and the mean).",
  "fhirVersion": "3.0.1",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "contextType": "datatype",
  "context": [
    "Quantity"
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Standard Deviation (same units as the quantity)",
        "definition": "The primary measure of variance/uncertainty of the value (the square root of the sum of the squares of the differences between all data points and the mean).",
        "comment": "standardDeviation has the same units as the quantity. It is used to normalize the data for computing the distribution function. Applications that cannot deal with probability distributions can still get an idea about the confidence level by looking at standardDeviation.",
        "min": 0,
        "max": "1",
        "mapping": [
          {
            "identity": "rim",
            "map": "PPD.standardDeviation"
          }
        ]
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty"
      },
      {
        "id": "Extension.valueDecimal",
        "path": "Extension.valueDecimal",
        "type": [
          {
            "code": "decimal"
          }
        ]
      }
    ]
  }
}