Evidence Based Medicine on FHIR Implementation Guide
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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

: NetEffectContribution for ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study

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<Evidence xmlns="http://hl7.org/fhir">
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    <div xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><p class="res-header-id"><b>Generated Narrative: Evidence 179591</b></p><a name="179591"> </a><a name="hc179591"> </a><div style="display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%"><p style="margin-bottom: 0px">version: 11; Last updated: 2026-01-07 11:28:51+0000; Language: en</p><p style="margin-bottom: 0px">Profile: <a href="StructureDefinition-net-effect-contribution.html">NetEffectContribution</a></p></div><p><b>url</b>: <a href="https://fevir.net/resources/Evidence/179591">https://fevir.net/resources/Evidence/179591</a></p><p><b>identifier</b>: FEvIR Object Identifier/179591</p><p><b>name</b>: NetEffectContribution_for_ComparativeEvidence_Bypass_surgery_effects_on_Additional_GI_surgical_procedure_in_JAMA_2018_Norwegian_cohort_study</p><p><b>title</b>: NetEffectContribution for ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study</p><p><b>citeAs</b>: </p><div><p>NetEffectContribution for ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study [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 179591. Revised 2026-01-07. Available at: https://fevir.net/resources/Evidence/179591. Computable resource at: https://fevir.net/resources/Evidence/179591#json.</p>
</div><p><b>status</b>: Active</p><p><b>author</b>: Computable Publishing: Net Effect Generator: , Brian S. Alper, MD, MSPH: </p><p><b>publisher</b>: Computable Publishing LLC</p><p><b>contact</b>: <a href="mailto:support@computablepublishing.com">support@computablepublishing.com</a></p><p><b>copyright</b>: </p><div><p>https://creativecommons.org/licenses/by-nc-sa/4.0/</p>
</div><p><b>description</b>: </p><div><p>This Evidence Resource is referenced in an example for the EBMonFHIR Implementation Guide.</p>
</div><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>Cohort study with baseline data of exposures from November 2005 through July 2010 and follow-up data from 2006 until death or through December 2015 at a tertiary care outpatient center, Vestfold Hospital Trust, Norway. Consecutive treatment-seeking adult patients (n = 2109) with severe obesity assessed (221 patients excluded and 1888 patients included).</p>
</div><p><b>variableRole</b>: Population</p><p><b>observed</b>: <a href="Group-178427.html">StudyGroup: Severely Obese Adults 2018 Norwegian Cohort</a></p></blockquote><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>bariatric surgery vs. specialized medical treatment without bariatric surgery</p>
</div><p><b>variableRole</b>: Exposure</p><p><b>comparatorCategory</b>: no bariatric surgery</p><p><b>observed</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>Additional GI surgical procedure</p>
</div><p><b>variableRole</b>: Outcome</p><p><b>observed</b>: <a href="EvidenceVariable-104120.html">OutcomeVariable: Additional GI surgical procedure</a></p></blockquote><blockquote><p><b>variableDefinition</b></p><p><b>RelativeOutcomeImportance</b>: <a href="ArtifactAssessment-423315.html">Outcome Importance Rating of DichotomousIntendedOutcome: Additional gastrointestinal surgical procedure  for StudyEligibilityCriteria: Eligibility Criteria for Bariatric Surgery Randomized Trial (Diabetes Surgery Study)</a></p><p><b>variableRole</b>: Covariate</p><p><b>roleSubtype</b>: <span title="Codes:">Relative Value Multiplier</span></p><p><b>observed</b>: Relative Importance Multiplier</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>: -387.5</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>-542.5--271.25</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 contribution analysis</span></td></tr></table></blockquote></div>
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  <name
        value="NetEffectContribution_for_ComparativeEvidence_Bypass_surgery_effects_on_Additional_GI_surgical_procedure_in_JAMA_2018_Norwegian_cohort_study"/>
  <title
         value="NetEffectContribution for ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study"/>
  <citeAs
          value="NetEffectContribution for ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study [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 179591. Revised 2026-01-07. Available at: https://fevir.net/resources/Evidence/179591. Computable resource at: https://fevir.net/resources/Evidence/179591#json."/>
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