{
"description": null,
"category": [ {
"text": "Comparative Evidence Report",
"coding": [ {
"code": "ComparativeEvidenceReport",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "ComparativeEvidenceReport"
} ]
} ],
"_filename": "example/Composition-178426.json",
"package_name": "hl7.fhir.uv.ebm",
"date": "2023-12-06T16:25:43.377Z",
"meta": {
"profile": [ "http://hl7.org/fhir/uv/ebm/StructureDefinition/comparative-evidence-report" ],
"versionId": "52",
"lastUpdated": "2023-12-06T16:25:43.377Z"
},
"publisher": null,
"name": null,
"section": [ {
"code": {
"text": "Population",
"coding": [ {
"code": "population",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Population"
} ]
},
"text": {
"div": "Severely Obese Adults 2018 Norwegian Cohort
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).
",
"status": "generated"
},
"entry": [ {
"type": "Group",
"display": "StudyGroup: Severely Obese Adults 2018 Norwegian Cohort",
"reference": "Group/178427"
} ],
"title": "Population"
}, {
"code": {
"text": "Intervention",
"coding": [ {
"code": "intervention",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Intervention"
} ]
},
"title": "Intervention",
"section": [ {
"code": {
"text": "Intervention Description",
"coding": [ {
"code": "intervention-description",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Intervention Description"
} ]
},
"text": {
"div": "Bariatric surgery, mostly gastric bypass (92%) or sleeve gastrectomy (7%)
",
"status": "additional"
},
"entry": [ {
"type": "Group",
"display": "ExposureDefinition: Bariatric Surgery (RYGB, VSG, LAGB, BPD)",
"reference": "Group/172423"
} ],
"title": "Intervention Description"
}, {
"code": {
"text": "Intervention Group",
"coding": [ {
"code": "intervention-group",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Intervention Group"
} ]
},
"text": {
"div": "932 patients opted for bariatric surgery
",
"status": "additional"
},
"entry": [ {
"type": "Group",
"display": "InterventionGroup: JAMA 2018 Norwegian cohort study Surgery cohort",
"reference": "Group/172934"
} ],
"title": "Intervention Group"
} ]
}, {
"code": {
"text": "Comparator",
"coding": [ {
"code": "comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Comparator"
} ]
},
"title": "Comparator Section",
"section": [ {
"code": {
"text": "Comparator Description",
"coding": [ {
"code": "comparator-description",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Comparator Description"
} ]
},
"text": {
"div": "medical treatment
",
"status": "additional"
},
"entry": [ {
"type": "Group",
"display": "ComparatorDefinition: NOT Bariatric Surgery (RYGB, VSG, LAGB, BPD)",
"reference": "Group/172424"
} ],
"title": "Comparator Description"
}, {
"code": {
"text": "Comparator Group",
"coding": [ {
"code": "comparator-group",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Comparator Group"
} ]
},
"text": {
"div": "956 opted for medical management without surgery
",
"status": "additional"
},
"entry": [ {
"type": "Group",
"display": "ComparatorGroup: JAMA 2018 Norwegian cohort study Control cohort",
"reference": "Group/172939"
} ],
"title": "Comparator Group"
} ]
}, {
"code": {
"text": "Study Design",
"coding": [ {
"code": "study-design",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Study Design"
} ]
},
"text": {
"div": "Observational research; Parallel cohort design; Longitudinal data collection
",
"status": "generated"
},
"entry": [ {
"type": "ArtifactAssessment",
"display": "Classification: Study Design for Association of Bariatric Surgery with Complications and Comorbidities JAMA 2018 Norwegian Cohort",
"reference": "ArtifactAssessment/179448"
} ],
"title": "Study Design"
}, {
"code": {
"text": "Baseline Measures",
"coding": [ {
"code": "baseline-measures",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Baseline Measures"
} ]
},
"text": {
"div": "As compared with medical patients, surgically treated patients were significantly younger with a higher BMI.
",
"status": "additional"
},
"title": "Baseline Measures",
"section": [ {
"text": {
"div": "Mean age 41.2 in Surgical Group vs. 45.7 in Medical Group (p < 0.001)
",
"status": "additional"
},
"focus": {
"type": "EvidenceVariable",
"display": "ExposureVariable: Age (as continuous variable)",
"reference": "EvidenceVariable/179449"
},
"title": "Age",
"section": [ {
"code": {
"text": "Baseline Measure with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"text": {
"div": "Age in Medical Group (n = 956) mean 45.7 years, SD 13.5 years
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "BaselineMeasureEvidence: Age in 2018 Norwegian Cohort Medical Group",
"reference": "Evidence/179451"
} ],
"title": "Baseline Measure with comparator alone"
}, {
"code": {
"text": "Baseline Measure with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"text": {
"div": "Age in Surgical Group (n = 932) mean 41.2 years, SD 10.5 years
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "BaselineMeasureEvidence: Age in 2018 Norwegian Cohort Surgical Group",
"reference": "Evidence/179452"
} ],
"title": "Baseline Measure with intervention alone"
}, {
"code": {
"text": "Baseline Measure with total group",
"coding": [ {
"code": "evidence-with-total-group",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with total group"
} ]
},
"title": "Baseline Measure with total group",
"emptyReason": {
"coding": [ {
"code": "notasked",
"system": "http://terminology.hl7.org/CodeSystem/list-empty-reason",
"display": "Not Asked"
} ]
}
}, {
"code": {
"text": "Baseline Measure with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"text": {
"div": "p < 0.001
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparativeBaselineMeasureEvidence: Age in 2018 Norwegian Cohort Surgical Group vs. Medical Group",
"reference": "Evidence/179455"
} ],
"title": "Baseline Measure with intervention vs. comparator"
} ]
}, {
"text": {
"div": "Mean BMI 45.4 in Surgical Group vs. 42.9 in Medical Group (p < 0.001)
",
"status": "additional"
},
"focus": {
"type": "EvidenceVariable",
"display": "ExposureVariable: Body Mass Index (as continuous variable)",
"reference": "EvidenceVariable/179450"
},
"title": "BMI",
"section": [ {
"code": {
"text": "Baseline Measure with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"text": {
"div": "BMI in Medical Group (n = 956) mean 42.9 kg/m2, SD 5.7 kg/m2
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "BaselineMeasureEvidence: BMI in 2018 Norwegian Cohort Medical Group",
"reference": "Evidence/179458"
} ],
"title": "Baseline Measure with comparator alone"
}, {
"code": {
"text": "Baseline Measure with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"text": {
"div": "BMI in Surgical Group (n = 932) mean 45.4 kg/m2, SD 6.2 kg/m2
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "BaselineMeasureEvidence: BMI in 2018 Norwegian Cohort Surgical Group",
"reference": "Evidence/179457"
} ],
"title": "Baseline Measure with intervention alone"
}, {
"code": {
"text": "Baseline Measure with total group",
"coding": [ {
"code": "evidence-with-total-group",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with total group"
} ]
},
"title": "Baseline Measure with total group",
"emptyReason": {
"coding": [ {
"code": "notasked",
"system": "http://terminology.hl7.org/CodeSystem/list-empty-reason",
"display": "Not Asked"
} ]
}
}, {
"code": {
"text": "Baseline Measure with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"text": {
"div": "p < 0.001
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparativeBaselineMeasureEvidence: BMI in 2018 Norwegian Cohort Surgical Group vs. Medical Group",
"reference": "Evidence/179456"
} ],
"title": "Baseline Measure with intervention vs. comparator"
} ]
} ]
}, {
"code": {
"text": "Participant Flow",
"coding": [ {
"code": "participant-flow",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Participant Flow"
} ]
},
"text": {
"div": "2109 patients included in baseline registry, 221 patients excluded, 1888 patients included in analysis (932 had opted for bariatric surgery, 956 had opted for medical treatment)
",
"status": "additional"
},
"title": "Participant Flow",
"section": [ {
"text": {
"div": "221 patients excluded from analysis
",
"status": "additional"
},
"focus": {
"type": "EvidenceVariable",
"display": "ParticipantFlowMeasure: Exclusion from analysis",
"reference": "EvidenceVariable/179459"
},
"title": "Excluded from analysis",
"section": [ {
"code": {
"text": "Participant flow with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"title": "Participant flow with comparator alone",
"emptyReason": {
"coding": [ {
"code": "unavailable",
"system": "http://terminology.hl7.org/CodeSystem/list-empty-reason",
"display": "Unavailable"
} ]
}
}, {
"code": {
"text": "Participant flow with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"title": "Participant flow with intervention alone",
"emptyReason": {
"coding": [ {
"code": "unavailable",
"system": "http://terminology.hl7.org/CodeSystem/list-empty-reason",
"display": "Unavailable"
} ]
}
}, {
"code": {
"text": "Participant flow with total group",
"coding": [ {
"code": "evidence-with-total-group",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with total group"
} ]
},
"text": {
"div": "221 excluded from analysis
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ParticipantFlow: 2018 Norwegian Cohort Excluded from Analysis",
"reference": "Evidence/179460"
} ],
"title": "Participant flow with total group"
}, {
"code": {
"text": "Participant flow with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"title": "Participant flow with intervention vs. comparator",
"emptyReason": {
"coding": [ {
"code": "unavailable",
"system": "http://terminology.hl7.org/CodeSystem/list-empty-reason",
"display": "Unavailable"
} ]
}
} ]
}, {
"text": {
"div": "1888 patients included in analysis (932 had opted for bariatric surgery, 956 had opted for medical treatment)
",
"status": "additional"
},
"focus": {
"type": "EvidenceVariable",
"display": "ParticipantFlowMeasure: Inclusion in analysis",
"reference": "EvidenceVariable/179461"
},
"title": "Included in analysis",
"section": [ {
"code": {
"text": "Participant flow with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"text": {
"div": "956 included in analysis
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ParticipantFlow: 2018 Norwegian Cohort Medical Group Included in Analysis",
"reference": "Evidence/179464"
} ],
"title": "Participant flow with comparator alone"
}, {
"code": {
"text": "Participant flow with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"text": {
"div": "932 included in analysis
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ParticipantFlow: 2018 Norwegian Cohort Surgical Group Included in Analysis",
"reference": "Evidence/179463"
} ],
"title": "Participant flow with intervention alone"
}, {
"code": {
"text": "Participant flow with total group",
"coding": [ {
"code": "evidence-with-total-group",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with total group"
} ]
},
"text": {
"div": "1888 patients included in analysis
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ParticipantFlow: 2018 Norwegian Cohort Included in Analysis",
"reference": "Evidence/179462"
} ],
"title": "Participant flow with total group"
}, {
"code": {
"text": "Participant flow with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"title": "Participant flow with intervention vs. comparator",
"emptyReason": {
"coding": [ {
"code": "notasked",
"system": "http://terminology.hl7.org/CodeSystem/list-empty-reason",
"display": "Not Asked"
} ]
}
} ]
} ]
}, {
"code": {
"text": "Outcomes",
"coding": [ {
"code": "outcome-measures",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Outcome Measures"
} ]
},
"title": "Outcomes",
"section": [ {
"focus": {
"type": "EvidenceVariable",
"display": "OutcomeVariable: Remission of diabetes",
"reference": "EvidenceVariable/104117"
},
"title": "Remission of diabetes",
"section": [ {
"code": {
"text": "Outcome with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"text": {
"div": "Risk of Remission of diabetes in control group was 14.8%.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparatorOnlyEvidence: Remission of diabetes without bariatric surgery (Control Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104396"
} ],
"title": "Outcome with comparator alone"
}, {
"code": {
"text": "Outcome with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"text": {
"div": "Risk of Remission of diabetes in intervention group was 57.5%.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "InterventionOnlyEvidence: Remission of diabetes with bariatric surgery (Intervention Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104401"
} ],
"title": "Outcome with intervention alone"
}, {
"code": {
"text": "Outcome with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"text": {
"div": "greater likelihood of diabetes remission: AR, 57.5% vs 14.8%; RD, 42.7% [95% CI, 35.8%-49.7%], RR, 3.9 [95% CI, 2.8-5.4]\n
\nCompared with specialized medical treatment, bariatric surgery appears to induce remission of diabetes.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparativeEvidence: Bypass surgery effects on Remission of diabetes in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104121"
} ],
"title": "Outcome with intervention vs. comparator"
} ]
}, {
"focus": {
"type": "EvidenceVariable",
"display": "OutcomeVariable: New onset depression",
"reference": "EvidenceVariable/104118"
},
"title": "New onset depression",
"section": [ {
"code": {
"text": "Outcome with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"text": {
"div": "Risk of New onset depression in control group was 6.5%.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparatorOnlyEvidence: New onset depression without bariatric surgery (Control Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104395"
} ],
"title": "Outcome with comparator alone"
}, {
"code": {
"text": "Outcome with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"text": {
"div": "Risk of New onset depression in intervention group was 8.9%.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "InterventionOnlyEvidence: New onset depression with bariatric surgery (Intervention Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104400"
} ],
"title": "Outcome with intervention alone"
}, {
"code": {
"text": "Outcome with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"text": {
"div": "greater risk of new-onset depression: AR, 8.9% vs 6.5%; RD, 2.4% [95% CI, 1.3%-3.5%], RR, 1.5 [95% CI, 1.4-1.7]\n
\nCompared with specialized medical treatment, bariatric surgery may slightly increase the incidence of depression.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparativeEvidence: Bypass surgery effects on New onset depression in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104155"
} ],
"title": "Outcome with intervention vs. comparator"
} ]
}, {
"focus": {
"type": "EvidenceVariable",
"display": "OutcomeVariable: Treatment with opioids",
"reference": "EvidenceVariable/104119"
},
"title": "Treatment with opioids",
"section": [ {
"code": {
"text": "Outcome with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"text": {
"div": "Risk of Treatment with opioids in control group was 15.8%.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparatorOnlyEvidence: Treatment with opioids without bariatric surgery (Control Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104394"
} ],
"title": "Outcome with comparator alone"
}, {
"code": {
"text": "Outcome with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"text": {
"div": "Risk of Treatment with opioids in intervention group was 19.4%.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "InterventionOnlyEvidence: Treatment with opioids with bariatric surgery (Intervention Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104402"
} ],
"title": "Outcome with intervention alone"
}, {
"code": {
"text": "Outcome with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"text": {
"div": "greater risk of treatment with opioids: AR, 19.4% vs 15.8%, RD, 3.6% [95% CI, 2.3%-4.9%], RR, 1.3 [95% CI, 1.2-1.4]\n
\nCompared with specialized medical treatment, bariatric surgery may slightly increase the use of opioids.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparativeEvidence: Bypass surgery effects on Treatment with opioids in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104156"
} ],
"title": "Outcome with intervention vs. comparator"
} ]
}, {
"focus": {
"type": "EvidenceVariable",
"display": "OutcomeVariable: Additional GI surgical procedure",
"reference": "EvidenceVariable/104120"
},
"title": "Additional GI surgical procedure",
"section": [ {
"code": {
"text": "Outcome with comparator alone",
"coding": [ {
"code": "evidence-with-comparator-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with comparator alone"
} ]
},
"text": {
"div": "Risk of additional GI surgical procedure in control group was 15.5%.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparatorOnlyEvidence: Additional GI surgical procedure without bariatric surgery (Control Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104385"
} ],
"title": "Outcome with comparator alone"
}, {
"code": {
"text": "Outcome with intervention alone",
"coding": [ {
"code": "evidence-with-intervention-alone",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention alone"
} ]
},
"text": {
"div": "Risk of additional GI surgical procedure in intervention group was 31.3%. 292 out of 932 observed with percentage of: 31.3%
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "InterventionOnlyEvidence: Additional GI surgical procedure with bariatric surgery (Intervention Group) in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104398"
} ],
"title": "Outcome with intervention alone"
}, {
"code": {
"text": "Outcome with intervention vs. comparator",
"coding": [ {
"code": "evidence-with-intervention-vs-comparator",
"system": "https://fevir.net/resources/CodeSystem/179423",
"display": "Evidence with intervention vs. comparator"
} ]
},
"text": {
"div": "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]).\n
\nCompared with specialized medical treatment, bariatric surgery appears to increase the rate of additional gastrointestinal surgical procedures.
",
"status": "additional"
},
"entry": [ {
"type": "Evidence",
"display": "ComparativeEvidence: Bypass surgery effects on Additional GI surgical procedure in JAMA 2018 Norwegian cohort study",
"reference": "Evidence/104157"
} ],
"title": "Outcome with intervention vs. comparator"
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