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

: NetEffectContribution for ComparativeEvidence: Bypass surgery effects on New onset depression in JAMA 2018 Norwegian cohort study

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    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: Evidence 179589</b></p><a name="179589"> </a><a name="hc179589"> </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: 17; Last updated: 2026-01-07 11:28:51+0000</p><p style="margin-bottom: 0px">Profile: <a href="StructureDefinition-net-effect-contribution.html">NetEffectContribution</a></p></div><p><b>url</b>: <a href="Evidence-179589.html">Evidence NetEffectContribution for ComparativeEvidence: Bypass surgery effects on New onset depression in JAMA 2018 Norwegian cohort study</a></p><p><b>identifier</b>: FEvIR Object Identifier/179589, <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 

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This OID may also be used in CD.codeSystem.">Uniform Resource Identifier (URI)</a>/urn:oid:2.16.840.1.113883.4.642.40.44.22.214</p><p><b>version</b>: 1.0.0-ballot3</p><p><b>name</b>: NetEffectContribution_for_ComparativeEvidence_Bypass_surgery_effects_on_New_onset_depression_in_JAMA_2018_Norwegian_cohort_study</p><p><b>title</b>: NetEffectContribution for ComparativeEvidence: Bypass surgery effects on New onset depression in JAMA 2018 Norwegian cohort study</p><p><b>citeAs</b>: </p><div><p>NetEffectContribution for ComparativeEvidence: Bypass surgery effects on New onset depression 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 179589. Revised 2026-01-07. Available at: https://fevir.net/resources/Evidence/179589. Computable resource at: https://fevir.net/resources/Evidence/179589#json.</p>
</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>
</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>New onset depression</p>
</div><p><b>variableRole</b>: Outcome</p><p><b>observed</b>: <a href="EvidenceVariable-104118.html">OutcomeVariable: New onset depression</a></p></blockquote><blockquote><p><b>variableDefinition</b></p><p><b>RelativeOutcomeImportance</b>: <a href="ArtifactAssessment-423313.html">Outcome Importance Rating of DichotomousIntendedOutcome: New onset depression  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>: -81.25</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>-113.75--65</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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