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 2.0.0-ballot 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
<Evidence xmlns="http://hl7.org/fhir">
<id value="55"/>
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<lastUpdated value="2024-12-13T21:17:32.934Z"/>
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<div xmlns="http://www.w3.org/1999/xhtml"><p>[No data.]</p></div>
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<system value="http://terminology.hl7.org/CodeSystem/v2-0203"/>
<code value="ACSN"/>
<display value="Accession ID"/>
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<text value="FEvIR Object Identifier"/>
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<system value="urn:ietf:rfc:3986"/>
<value value="https://fevir.net/FOI/55"/>
<assigner>
<display value="Computable Publishing LLC"/>
</assigner>
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<identifier>
<system value="https://gps.health/coka"/>
<value value="143"/>
<assigner>
<display value="COVID-19 Knowledge Accelerator"/>
</assigner>
</identifier>
<version value="4"/>
<name
value="Fourteen_day_mortality_remdesivir_vs_placebo_meta_analysis_ACTT_1_Wang_et_al_WHO_SOLIDARITY"/>
<title
value="14-day mortality remdesivir vs placebo meta-analysis (ACTT-1, Wang et al, WHO SOLIDARITY)"/>
<citeAsReference>🔗
<reference value="Citation/58"/>
<type value="Citation"/>
<display
value="Alper BS, Dehnbostel J, Shahin K. 14-day mortality remdesivir vs placebo meta-analysis (ACTT-1, Wang et al, WHO SOLIDARITY). Fast Evidence Interoperability Resources (FEvIR) Platform, entry 55, version 4. Created 2020 Dec 17. Revised 2020 Dec 21. Accessed 2021 Mar 13. Computable resource at: https://fevir.net/resources/Evidence/55."/>
</citeAsReference>
<status value="active"/>
<date value="2021-08-23T12:33:29.572Z"/>
<approvalDate value="2020-12-17"/>
<lastReviewDate value="2020-12-21"/>
<publisher value="Computable Publishing LLC"/>
<contact>
<telecom>
<system value="email"/>
<value value="support@computablepublishing.com"/>
</telecom>
</contact>
<author>
<name value="Brian S. Alper"/>
</author>
<author>
<name value="Joanne Dehnbostel"/>
</author>
<author>
<name value="Khalid Shahin"/>
</author>
<copyright value="https://creativecommons.org/licenses/by-nc-sa/4.0/"/>
<relatedArtifact>
<type value="citation"/>
<display
value="Remdesivir in adults with severe COVID-19: a randomised, double-blind, placebo-controlled, multicentre trial"/>
<resource
value="http://computablepublishing.us/fevir/resources/Citation/4932"/>
</relatedArtifact>
<relatedArtifact>
<type value="citation"/>
<display value="Remdesivir for the Treatment of Covid-19 - Final Report"/>
</relatedArtifact>
<relatedArtifact>
<type value="citation"/>
<display
value="Repurposed Antiviral Drugs for Covid-19 — Interim WHO Solidarity Trial Results"/>
</relatedArtifact>
<relatedArtifact>
<type value="cite-as"/>
<citation
value="14-day mortality remdesivir vs placebo meta-analysis (ACTT-1, Wang et al, WHO SOLIDARITY) [Database Entry: FHIR Evidence Resource]. Contributors: Brian S. Alper, Joanne Dehnbostel, Khalid Shahin [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 55. Published 2020-12-17. Revised 2021-08-23. Available at: https://fevir.net/resources/Evidence/55. Computable resource at: https://fevir.net/resources/Evidence/55#json."/>
</relatedArtifact>
<description
value="COVID-19 pneumonia remdesivir vs. placebo 14-day mortality (779 events among 6,744 participants, 3 randomized trials)
Risk ratio 0.85 (95% CI 0.74 to 0.96) in fixed-effect analysis
Risk ratio 0.81 (95% CI 0.60 to 1.08) in random-effects analysis"/>
<assertion
value="Remdesivir might reduce 14-day mortality, but this finding has not been repeated in a second trial (Low certainty)"/>
<variableDefinition>
<description value="Adults with COVID-19 pneumonia admitted to hospital"/>
<variableRole value="population"/>
<observed>🔗
<reference value="Group/179799"/>
<type value="Group"/>
<display
value="MetaanalysisStudyGroup: Effect Estimates for Mortality at 14 days from COVID19 Remdesivir vs. Placebo RCTs (Biegel 2020 data 35/541 vs. 61/521) (Wang 2020 data 15/153 vs. 7/78) (SOLIDARITY data 219/2743 vs. 219/2708)"/>
</observed>
<intended>🔗
<reference value="Group/12714"/>
<type value="Group"/>
<display value="COVID-19PneumoniaHospitalizedAdult"/>
</intended>
<directnessMatch>
<coding>
<system value="http://terminology.hl7.org/CodeSystem/directness"/>
<version value="1.0.0"/>
<code value="high"/>
<display
value="High quality match between observed and intended variable"/>
</coding>
</directnessMatch>
</variableDefinition>
<variableDefinition>
<description
value="Remdesivir IV 200 mg once then 100 mg once daily for 9 days"/>
<variableRole value="exposure"/>
<observed>🔗
<reference value="Group/179783"/>
<type value="Group"/>
<display
value="Remdesivir IV 200 mg once then 100 mg once daily for 9 days"/>
</observed>
<intended>🔗
<reference value="EvidenceVariable/12717"/>
<type value="EvidenceVariable"/>
<display value="Remdesivir"/>
</intended>
</variableDefinition>
<variableDefinition>
<description value="Placebo"/>
<note>
<text value="SOLIDARITY trial did not use placebo in control group"/>
</note>
<variableRole value="exposure"/>
<observed>🔗
<reference value="EvidenceVariable/12718"/>
<type value="EvidenceVariable"/>
<display value="Placebo"/>
</observed>
<intended>🔗
<reference value="EvidenceVariable/12718"/>
<type value="EvidenceVariable"/>
<display value="Placebo"/>
</intended>
</variableDefinition>
<variableDefinition>
<description value="Mortality at 14 days"/>
<variableRole value="outcome"/>
<observed>🔗
<reference value="EvidenceVariable/12719"/>
<type value="EvidenceVariable"/>
<display value="Mortality at 14 days"/>
</observed>
<intended>🔗
<reference value="EvidenceVariable/12719"/>
<type value="EvidenceVariable"/>
<display value="Mortality at 14 days"/>
</intended>
</variableDefinition>
<studyDesign>
<coding>
<system value="https://fevir.net/resources/CodeSystem/181513"/>
<code value="SEVCO:01003"/>
<display value="randomized assignment"/>
</coding>
</studyDesign>
<statistic>
<description
value="risk ratio 0.85 (95% CI 0.74 to 0.96) in fixed-effect meta-analysis; Test for overall effect Z = 2.52 (p = 0.01); Heterogeneity Chi-squared = 7.33, df = 2 (p 0.03), I-squared = 73%"/>
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<coding>
<system value="http://terminology.hl7.org/CodeSystem/statistic-type"/>
<version value="0.1.0"/>
<code value="C93152"/>
<display value="Relative Risk"/>
<userSelected value="true"/>
</coding>
</statisticType>
<quantity>
<value value="0.85"/>
</quantity>
<numberOfEvents value="779"/>
<numberAffected value="779"/>
<sampleSize>
<numberOfStudies value="3"/>
<numberOfParticipants value="6774"/>
<knownDataCount value="6744"/>
</sampleSize>
<attributeEstimate>
<type>
<coding>
<system
value="http://terminology.hl7.org/CodeSystem/attribute-estimate-type"/>
<code value="C53324"/>
<display value="Confidence interval"/>
</coding>
</type>
<level value="0.95"/>
<range>
<low>
<value value="0.74"/>
</low>
<high>
<value value="0.96"/>
</high>
</range>
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<attributeEstimate>
<type>
<coding>
<system value="https://fevir.net/resources/CodeSystem/181513"/>
<code value="STATO:0000104"/>
<display value="Z-score"/>
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<quantity>
<value value="2.52"/>
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<attributeEstimate>
<type>
<coding>
<system
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<code value="C44185"/>
<display value="P-value"/>
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<quantity>
<value value="0.01"/>
</quantity>
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<attributeEstimate>
<type>
<coding>
<system
value="http://terminology.hl7.org/CodeSystem/attribute-estimate-type"/>
<code value="0000420"/>
<display value="I-squared"/>
</coding>
</type>
<quantity>
<value value="0.73"/>
</quantity>
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<attributeEstimate>
<type>
<coding>
<system
value="http://terminology.hl7.org/CodeSystem/attribute-estimate-type"/>
<code value="0000419"/>
<display value="Cochran's Q statistic"/>
</coding>
</type>
<quantity>
<value value="7.33"/>
</quantity>
<attributeEstimate>
<type>
<coding>
<system value="https://fevir.net/resources/CodeSystem/181513"/>
<code value="STATO:0000069"/>
<display value="Degrees of Freedom"/>
</coding>
<text value="degrees of freedom"/>
</type>
<quantity>
<value value="2"/>
</quantity>
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<attributeEstimate>
<type>
<coding>
<system
value="http://terminology.hl7.org/CodeSystem/attribute-estimate-type"/>
<code value="C44185"/>
<display value="P-value"/>
</coding>
</type>
<quantity>
<value value="0.03"/>
</quantity>
</attributeEstimate>
</attributeEstimate>
<modelCharacteristic>
<code>
<coding>
<system value="http://hl7.org/fhir/statistic-model-code"/>
<code value="effectsFixed"/>
<display value="Fixed-effects"/>
<userSelected value="true"/>
</coding>
</code>
<applied value="true"/>
</modelCharacteristic>
<modelCharacteristic>
<code>
<coding>
<system value="http://hl7.org/fhir/statistic-model-code"/>
<code value="metaAnalysis"/>
<display value="Meta-analysis"/>
<userSelected value="true"/>
</coding>
</code>
<applied value="true"/>
</modelCharacteristic>
</statistic>
<statistic>
<description
value="risk ratio 0.81 (95% CI 0.60 to 1.08) in random-effects meta-analysis; Test for overall effect Z = 1.44 (p = 0.15); Heterogeneity Chi-squared = 7.33, df = 2 (p 0.03), I-squared = 73%; Tau-squared = 0.04"/>
<note>
<text
value="We consider the random-effects model more appropriate for interpretation as the true effect of remdesivir is likely different across the different populations represented in each trial."/>
</note>
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<system value="http://terminology.hl7.org/CodeSystem/statistic-type"/>
<version value="0.1.0"/>
<code value="C93152"/>
<display value="Relative Risk"/>
<userSelected value="true"/>
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<numberOfEvents value="779"/>
<numberAffected value="779"/>
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<numberOfParticipants value="6774"/>
<knownDataCount value="6744"/>
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<code value="C53324"/>
<display value="Confidence interval"/>
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<level value="0.95"/>
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<low>
<value value="0.6"/>
</low>
<high>
<value value="1.08"/>
</high>
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<code value="STATO:0000104"/>
<display value="Z-score"/>
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<coding>
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<code value="C44185"/>
<display value="P-value"/>
</coding>
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<quantity>
<value value="0.15"/>
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<attributeEstimate>
<type>
<coding>
<system
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<code value="0000421"/>
<display value="Tau squared"/>
</coding>
</type>
<quantity>
<value value="0.04"/>
</quantity>
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<attributeEstimate>
<type>
<coding>
<system
value="http://terminology.hl7.org/CodeSystem/attribute-estimate-type"/>
<code value="0000420"/>
<display value="I-squared"/>
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<quantity>
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</quantity>
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<attributeEstimate>
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<coding>
<system
value="http://terminology.hl7.org/CodeSystem/attribute-estimate-type"/>
<code value="0000419"/>
<display value="Cochran's Q statistic"/>
</coding>
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<quantity>
<value value="7.33"/>
</quantity>
<attributeEstimate>
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<coding>
<system value="https://fevir.net/resources/CodeSystem/179423"/>
<code value="defined-in-text"/>
<display value="Defined in text"/>
</coding>
<text value="degrees of freedom"/>
</type>
<quantity>
<value value="2"/>
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<attributeEstimate>
<type>
<coding>
<system
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<code value="C44185"/>
<display value="P-value"/>
</coding>
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<quantity>
<value value="0.03"/>
</quantity>
</attributeEstimate>
</attributeEstimate>
<modelCharacteristic>
<code>
<coding>
<system value="http://hl7.org/fhir/statistic-model-code"/>
<code value="effectsRandom"/>
<display value="Random-effects"/>
<userSelected value="true"/>
</coding>
</code>
<applied value="true"/>
</modelCharacteristic>
<modelCharacteristic>
<code>
<coding>
<system value="http://hl7.org/fhir/statistic-model-code"/>
<code value="metaAnalysis"/>
<display value="Meta-analysis"/>
<userSelected value="true"/>
</coding>
</code>
<applied value="true"/>
</modelCharacteristic>
<modelCharacteristic>
<code>
<coding>
<system value="http://hl7.org/fhir/statistic-model-code"/>
<code value="tauDersimonianLaird"/>
<display value="Dersimonian-Laird method"/>
<userSelected value="true"/>
</coding>
</code>
<applied value="true"/>
</modelCharacteristic>
</statistic>
<certainty>
<description value="Low certainty due to inconsistency and risk of bias"/>
<type>
<coding>
<system value="http://hl7.org/fhir/certainty-type"/>
<code value="Overall"/>
<display value="Overall certainty"/>
</coding>
</type>
<rating>
<coding>
<system value="http://hl7.org/fhir/certainty-rating"/>
<code value="low"/>
<display value="Low quality"/>
</coding>
</rating>
<subcomponent>
<type>
<coding>
<system value="http://hl7.org/fhir/certainty-type"/>
<code value="PublicationBias"/>
<display value="Publication bias"/>
</coding>
</type>
<rating>
<coding>
<system value="http://hl7.org/fhir/certainty-rating"/>
<code value="no-concern"/>
<display value="no serious concern"/>
</coding>
</rating>
</subcomponent>
<subcomponent>
<note>
<text
value="There is a high degree of heterogeneity (I-squared = 73%). There is also inconsistency in findings between the fixed-effect and random-effects statistical models."/>
</note>
<type>
<coding>
<system value="http://hl7.org/fhir/certainty-type"/>
<code value="Inconsistency"/>
<display value="Inconsistency"/>
</coding>
</type>
<rating>
<coding>
<system value="http://hl7.org/fhir/certainty-rating"/>
<code value="serious-concern"/>
<display value="serious concern"/>
</coding>
</rating>
</subcomponent>
<subcomponent>
<note>
<text
value="Although the random-effects analysis finds an estimate without statistical significance, this imprecision is explained by the inconsistency (heterogeneity) and thus not further downrated in certainty assessment."/>
</note>
<type>
<coding>
<system value="http://hl7.org/fhir/certainty-type"/>
<code value="Imprecision"/>
<display value="Imprecision"/>
</coding>
</type>
<rating>
<coding>
<system value="http://hl7.org/fhir/certainty-rating"/>
<code value="no-concern"/>
<display value="no serious concern"/>
</coding>
</rating>
</subcomponent>
<subcomponent>
<type>
<coding>
<system value="http://hl7.org/fhir/certainty-type"/>
<code value="Indirectness"/>
<display value="Indirectness"/>
</coding>
</type>
<rating>
<coding>
<system value="http://hl7.org/fhir/certainty-rating"/>
<code value="no-concern"/>
<display value="no serious concern"/>
</coding>
</rating>
</subcomponent>
<subcomponent>
<type>
<coding>
<system value="http://hl7.org/fhir/certainty-type"/>
<code value="RiskOfBias"/>
<display value="Risk of bias"/>
</coding>
</type>
<rating>
<coding>
<system value="http://hl7.org/fhir/certainty-rating"/>
<code value="serious-concern"/>
<display value="serious concern"/>
</coding>
</rating>
<subcomponent>
<note>
<text
value="No blinding (no placebo control) in the largest trial"/>
</note>
<type>
<coding>
<system value="https://fevir.net/resources/CodeSystem/181513"/>
<code value="SEVCO:00035"/>
<display value="Inadequate blinding of participants"/>
</coding>
<text value="Lack of blinding"/>
</type>
<rating>
<coding>
<system value="http://hl7.org/fhir/certainty-rating"/>
<code value="present"/>
<display value="present"/>
</coding>
</rating>
</subcomponent>
</subcomponent>
</certainty>
</Evidence>