Evidence Based Medicine on FHIR Implementation Guide
1.0.0-ballot3 - STU 1 Ballot 3 World

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

: NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022

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{
  "resourceType" : "Evidence",
  "id" : "423311",
  "meta" : {
    "versionId" : "6",
    "lastUpdated" : "2026-01-26T21:00:20.675Z",
    "profile" : [
      🔗 "http://hl7.org/fhir/uv/ebm/StructureDefinition/net-effect-estimate"
    ]
  },
  "language" : "en",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: Evidence 423311</b></p><a name=\"423311\"> </a><a name=\"hc423311\"> </a><div style=\"display: inline-block; background-color: #fbffeb; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">version: 6; Last updated: 2026-01-26 21:00:20+0000</p><p style=\"margin-bottom: 0px\">Profile: <a href=\"StructureDefinition-net-effect-estimate.html\">NetEffectEstimate</a></p></div><p><b>url</b>: <a href=\"Evidence-423311.html\">Evidence NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022</a></p><p><b>identifier</b>: FEvIR Object Identifier/423311, <a href=\"http://terminology.hl7.org/7.5.0/NamingSystem-uri.html\" title=\"As defined by RFC 3986 (http://www.ietf.org/rfc/rfc3986.txt)(with many schemes defined in many RFCs). For OIDs and UUIDs, use the URN form (urn:oid:(note: lowercase) and urn:uuid:). See http://www.ietf.org/rfc/rfc3001.txt and http://www.ietf.org/rfc/rfc4122.txt \r\n\r\nThis oid is used as an identifier II.root to indicate the the extension is an absolute URI (technically, an IRI). Typically, this is used for OIDs and GUIDs. Note that when this OID is used with OIDs and GUIDs, the II.extension should start with urn:oid or urn:uuid: \r\n\r\nNote that this OID is created to aid with interconversion between CDA and FHIR - FHIR uses urn:ietf:rfc:3986 as equivalent to this OID. URIs as identifiers appear more commonly in FHIR.\r\n\r\nThis OID may also be used in CD.codeSystem.\">Uniform Resource Identifier (URI)</a>/urn:oid:2.16.840.1.113883.4.642.40.44.22.219</p><p><b>version</b>: 1.0.0-ballot3</p><p><b>name</b>: NetEffectEstimate_for_SummaryOfNetEffect_Bariatric_Surgery_Summary_of_Net_Effect_Contributions_Example_for_GIN_2022</p><p><b>title</b>: NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022</p><p><b>citeAs</b>: </p><div><p>NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022 [Database Entry: FHIR Evidence Resource]. Contributors: Computable Publishing: Net Effect Generator, Brian S. Alper, MD, MSPH [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 423311. Revised 2026-01-26. Available at: https://fevir.net/resources/Evidence/423311. Computable resource at: https://fevir.net/resources/Evidence/423311#json.</p>\n</div><p><b>status</b>: Active</p><p><b>date</b>: 2026-11-05 14:34:28+0000</p><p><b>author</b>: Computable Publishing: Net Effect Generator: , Brian S. Alper, MD, MSPH: </p><p><b>publisher</b>: HL7 International / Clinical Decision Support</p><p><b>contact</b>: HL7 International / Clinical Decision Support: <a href=\"http://www.hl7.org/Special/committees/dss\">http://www.hl7.org/Special/committees/dss</a></p><p><b>copyright</b>: </p><div><p>https://creativecommons.org/licenses/by-nc-sa/4.0/</p>\n</div><p><b>description</b>: </p><div><p>This Evidence Resource is referenced in an example for the EBMonFHIR Implementation Guide.</p>\n</div><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>Adults with diabetes and obesity</p>\n</div><p><b>variableRole</b>: Population</p><p><b>intended</b>: <a href=\"Group-170443.html\">StudyEligibilityCriteria: Eligibility Criteria for Bariatric Surgery Randomized Trial (Diabetes Surgery Study)</a></p></blockquote><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>comparison groups of bariatric surgery vs. no bariatric surgery</p>\n</div><p><b>variableRole</b>: Exposure</p><p><b>comparatorCategory</b>: no bariatric surgery</p><p><b>intended</b>: <a href=\"EvidenceVariable-172427.html\">GroupAssignment: Bariatric Surgery vs. no bariatric surgery</a></p></blockquote><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>composite outcome derived from NetEffectContributions</p>\n</div><p><b>variableRole</b>: Outcome</p><p><b>observed</b>: <a href=\"Group-179584.html\">NetEffectContributions: Bariatric Surgery Example for GIN 2022</a></p></blockquote><blockquote><p><b>statistic</b></p><p><b>statisticType</b>: <span title=\"Codes:{https://fevir.net/sevco STATO:0000424}\">risk difference</span></p><p><b>quantity</b>: 4.695</p><h3>AttributeEstimates</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Type</b></td><td><b>Level</b></td><td><b>Range</b></td></tr><tr><td style=\"display: none\">*</td><td><span title=\"Codes:{https://fevir.net/sevco STATO:0000196}\">confidence interval</span></td><td>0.95</td><td>1.4049834821843223-7.985016517815678</td></tr></table><h3>ModelCharacteristics</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Code</b></td></tr><tr><td style=\"display: none\">*</td><td><span title=\"Codes:\">Net effect analysis</span></td></tr></table></blockquote></div>"
  },
  "url" : "https://fevir.net/resources/Evidence/423311",
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  "name" : "NetEffectEstimate_for_SummaryOfNetEffect_Bariatric_Surgery_Summary_of_Net_Effect_Contributions_Example_for_GIN_2022",
  "title" : "NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022",
  "citeAs" : "NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022 [Database Entry: FHIR Evidence Resource]. Contributors: Computable Publishing: Net Effect Generator, Brian S. Alper, MD, MSPH [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 423311. Revised 2026-01-26. Available at: https://fevir.net/resources/Evidence/423311. Computable resource at: https://fevir.net/resources/Evidence/423311#json.",
  "status" : "active",
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  "author" : [
    {
      "name" : "Computable Publishing: Net Effect Generator"
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    {
      "name" : "Brian S. Alper, MD, MSPH"
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  "publisher" : "HL7 International / Clinical Decision Support",
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  "description" : "This Evidence Resource is referenced in an example for the EBMonFHIR Implementation Guide.",
  "variableDefinition" : [
    {
      "description" : "Adults with diabetes and obesity",
      "variableRole" : "population",
      "intended" : {
        🔗 "reference" : "Group/170443",
        "type" : "Group",
        "display" : "StudyEligibilityCriteria: Eligibility Criteria for Bariatric Surgery Randomized Trial (Diabetes Surgery Study)"
      }
    },
    {
      "description" : "comparison groups of bariatric surgery vs. no bariatric surgery",
      "variableRole" : "exposure",
      "comparatorCategory" : "no bariatric surgery",
      "intended" : {
        🔗 "reference" : "EvidenceVariable/172427",
        "type" : "EvidenceVariable",
        "display" : "GroupAssignment: Bariatric Surgery vs. no bariatric surgery"
      }
    },
    {
      "description" : "composite outcome derived from NetEffectContributions",
      "variableRole" : "outcome",
      "observed" : {
        🔗 "reference" : "Group/179584",
        "type" : "Group",
        "display" : "NetEffectContributions: Bariatric Surgery Example for GIN 2022"
      }
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                "code" : "STATO:0000196",
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          "level" : 0.95,
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            "low" : {
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            }
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      "modelCharacteristic" : [
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          "code" : {
            "text" : "Net effect analysis"
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}