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
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"div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: Evidence 104157</b></p><a name=\"104157\"> </a><a name=\"hc104157\"> </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: 15; Last updated: 2026-06-07 15:07:59+0000</p><p style=\"margin-bottom: 0px\">Profiles: <a href=\"StructureDefinition-comparative-evidence.html\">ComparativeEvidence</a>, <a href=\"StructureDefinition-single-study-evidence.html\">SingleStudyEvidence</a></p></div><p><b>ArtifactPublicationStatus</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/cited-artifact-status-type active}\">Active</span></p><p><b>url</b>: <a href=\"Evidence-104157.html\">Evidence ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study</a></p><p><b>identifier</b>: FEvIR Object Identifier/104157, <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:2.16.840.1.113883.4.642.40.44.22.32</p><p><b>version</b>: 1.0.0-ballot3</p><p><b>name</b>: ComparativeEvidence_Bypass_surgery_effects_on_Additional_GI_surgical_procedure_in_JAMA_2018_Norwegian_cohort_study</p><p><b>title</b>: ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study</p><p><b>citeAs</b>: </p><div><p>ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study [Database Entry: FHIR Evidence Resource]. Contributors: Brian S. Alper [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 104157. Revised 2022-09-19. Available at: https://fevir.net/resources/Evidence/104157. Computable resource at: https://fevir.net/resources/Evidence/104157#json.</p>\n</div><p><b>status</b>: Active</p><p><b>date</b>: 2022-09-19 21:15:43+0000</p><p><b>author</b>: Brian S. Alper: </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><h3>UseContexts</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Code</b></td><td><b>Value[x]</b></td></tr><tr><td style=\"display: none\">*</td><td><a href=\"CodeSystem-179423.html#179423-evidence-communication\">Evidence Based Medicine on FHIR Implementation Guide Code System: evidence-communication</a> (Evidence Communication)</td><td><span title=\"Codes:{https://fevir.net/resources/CodeSystem/179423 ComparativeEvidence}\">ComparativeEvidence</span></td></tr><tr><td style=\"display: none\">*</td><td><a href=\"CodeSystem-179423.html#179423-evidence-communication\">Evidence Based Medicine on FHIR Implementation Guide Code System: evidence-communication</a> (Evidence Communication)</td><td><span title=\"Codes:{https://fevir.net/resources/CodeSystem/179423 SingleStudyEvidence}\">SingleStudyEvidence</span></td></tr></table><p><b>copyright</b>: </p><div><p>https://creativecommons.org/licenses/by-nc-sa/4.0/</p>\n</div><h3>RelatesTos</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Type</b></td><td><b>Target[x]</b></td></tr><tr><td style=\"display: none\">*</td><td><span title=\"Codes:{http://terminology.hl7.org/CodeSystem/artifact-relationship-type derived-from}\">Derived From</span></td><td><a href=\"https://jamanetwork.com/journals/jama/fullarticle/2669729\">https://jamanetwork.com/journals/jama/fullarticle/2669729</a></td></tr></table><p><b>description</b>: </p><div><p>Surgical patients had a greater risk for undergoing at least 1 additional gastrointestinal surgical procedure (AR, 31.3% vs 15.5%; RD, 15.8% [95% CI, 13.1%-18.5%]; RR, 2.0 [95% CI, 1.7-2.4]).</p>\n</div><p><b>assertion</b>: </p><div><p>Compared with specialized medical treatment, bariatric surgery appears to increase the rate of additional gastrointestinal surgical procedures.</p>\n</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\u2009=\u20092109) with severe obesity assessed (221 patients excluded and 1888 patients included).</p>\n</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>\n</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>\n</div><p><b>variableRole</b>: Outcome</p><p><b>observed</b>: <a href=\"EvidenceVariable-104120.html\">OutcomeVariable: Additional GI surgical procedure</a></p></blockquote><p><b>synthesisType</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/synthesis-type NotApplicable}\">not applicable</span></p><p><b>studyDesign</b>: <span title=\"Codes:{https://fevir.net/sevco SEVCO:01002}\">observational research</span>, <span title=\"Codes:{https://fevir.net/sevco SEVCO:01011}\">parallel cohort design</span>, <span title=\"Codes:{https://fevir.net/sevco SEVCO:01028}\">longitudinal data collection</span></p><blockquote><p><b>statistic</b></p><p><b>description</b>: </p><div><p>Relative risk 2.0; 95% CI 1.7 to 2.4</p>\n</div><p><b>note</b>: </p><blockquote><div><p>Result observed without bariatric surgery was 15.5%, result observed with bariatric surgery was 31.3%</p>\n</div></blockquote><p><b>statisticType</b>: <span title=\"Codes:{https://fevir.net/sevco STATO:0000245}\">risk ratio</span></p><p><b>quantity</b>: 2</p><h3>SampleSizes</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>NumberOfStudies</b></td><td><b>NumberOfParticipants</b></td><td><b>KnownDataCount</b></td></tr><tr><td style=\"display: none\">*</td><td>1</td><td>1888</td><td>1888</td></tr></table><h3>AttributeEstimates</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Description</b></td><td><b>Type</b></td><td><b>Level</b></td><td><b>Range</b></td></tr><tr><td style=\"display: none\">*</td><td><div><p>95% CI 1.7 to 2.4</p>\n</div></td><td><span title=\"Codes:{https://fevir.net/sevco STATO:0000196}\">confidence interval</span></td><td>0.95</td><td>1.7-2.4</td></tr></table></blockquote><blockquote><p><b>statistic</b></p><p><b>description</b>: </p><div><p>odds ratio 2.45 (1.95 to 3.23) derived from risk ratio and control event rate during the generation of the Summary of Findings</p>\n</div><p><b>statisticType</b>: <span title=\"Codes:{https://fevir.net/sevco STATO:0000182}\">odds ratio</span></p><p><b>quantity</b>: 2.449275362318841</p><h3>AttributeEstimates</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Type</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>1.9504412763068564-3.2292993630573243</td></tr></table></blockquote><h3>Certainties</h3><table class=\"grid\"><tr><td style=\"display: none\">-</td><td><b>Description</b></td><td><b>Type</b></td><td><b>Rating</b></td></tr><tr><td style=\"display: none\">*</td><td><div><p>rated down 2 levels due to observational study, rated up 1 level for large effect size</p>\n</div></td><td><span title=\"Codes:{http://terminology.hl7.org/CodeSystem/certainty-type Overall}\">Overall certainty</span></td><td><span title=\"Codes:{http://terminology.hl7.org/CodeSystem/certainty-rating moderate}\">Moderate quality</span></td></tr></table></div>"
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