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: OCEBM 2009 Levels of Evidence - XML Representation

Active as of 2026-01-29

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<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="cs-ocebm-2009-levels-of-evidence"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem cs-ocebm-2009-levels-of-evidence</b></p><a name="cs-ocebm-2009-levels-of-evidence"> </a><a name="hccs-ocebm-2009-levels-of-evidence"> </a><p>This case-insensitive code system <code>http://fhir.awmf.org/awmf.ig/CodeSystem/cs-ocebm-2009-levels-of-evidence</code> defines the following codes:</p><table class="codes"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Definition</b></td><td><b>Deutsch (German, de)</b></td></tr><tr><td style="white-space:nowrap">1a<a name="cs-ocebm-2009-levels-of-evidence-1a"> </a></td><td>Systematic reviews of high-quality RCTs</td><td>1a</td></tr><tr><td style="white-space:nowrap">1b<a name="cs-ocebm-2009-levels-of-evidence-1b"> </a></td><td>Individual RCT (with narrow confidence interval)</td><td>1b</td></tr><tr><td style="white-space:nowrap">1c<a name="cs-ocebm-2009-levels-of-evidence-1c"> </a></td><td>All or none RCTs</td><td>1c</td></tr><tr><td style="white-space:nowrap">2a<a name="cs-ocebm-2009-levels-of-evidence-2a"> </a></td><td>Systematic reviews of cohort studies</td><td>2a</td></tr><tr><td style="white-space:nowrap">2b<a name="cs-ocebm-2009-levels-of-evidence-2b"> </a></td><td>Individual cohort study or low-quality RCT</td><td>2b</td></tr><tr><td style="white-space:nowrap">2c<a name="cs-ocebm-2009-levels-of-evidence-2c"> </a></td><td>Outcomes research; ecological studies</td><td>2c</td></tr><tr><td style="white-space:nowrap">3a<a name="cs-ocebm-2009-levels-of-evidence-3a"> </a></td><td>Systematic reviews of case-control studies</td><td>3a</td></tr><tr><td style="white-space:nowrap">3b<a name="cs-ocebm-2009-levels-of-evidence-3b"> </a></td><td>Individual case-control study</td><td>3b</td></tr><tr><td style="white-space:nowrap">4<a name="cs-ocebm-2009-levels-of-evidence-4"> </a></td><td>Case series</td><td>4</td></tr><tr><td style="white-space:nowrap">5<a name="cs-ocebm-2009-levels-of-evidence-5"> </a></td><td>Expert opinion</td><td>5</td></tr></table></div>
  </text>
  <url
       value="http://fhir.awmf.org/awmf.ig/CodeSystem/cs-ocebm-2009-levels-of-evidence"/>
  <version value="0.2.0"/>
  <name value="OCEBM2009LevelsOfEvidence"/>
  <title value="OCEBM 2009 Levels of Evidence"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2026-01-29T18:27:10+00:00"/>
  <publisher value="AWMF e.V."/>
  <contact>
    <name value="AWMF e.V."/>
    <telecom>
      <system value="url"/>
      <value value="https://www.awmf.org"/>
    </telecom>
  </contact>
  <description
               value="CodeSystem representing the Oxford Centre for Evidence-Based Medicine 2009 CEBM Levels of Evidence"/>
  <caseSensitive value="false"/>
  <content value="complete"/>
  <count value="10"/>
  <concept>
    <code value="1a"/>
    <display value="1a"/>
    <definition value="Systematic reviews of high-quality RCTs">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString value="Systematische Reviews hochwertiger RCTs"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="1a"/>
    </designation>
  </concept>
  <concept>
    <code value="1b"/>
    <display value="1b"/>
    <definition value="Individual RCT (with narrow confidence interval)">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString
                       value="Einzelne randomisierte kontrollierte Studien (mit engem Konfidenzintervall)"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="1b"/>
    </designation>
  </concept>
  <concept>
    <code value="1c"/>
    <display value="1c"/>
    <definition value="All or none RCTs">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString
                       value="Alle oder keine randomisierten kontrollierten Studien"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="1c"/>
    </designation>
  </concept>
  <concept>
    <code value="2a"/>
    <display value="2a"/>
    <definition value="Systematic reviews of cohort studies">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString value="Systematische Reviews von Kohortenstudien"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="2a"/>
    </designation>
  </concept>
  <concept>
    <code value="2b"/>
    <display value="2b"/>
    <definition value="Individual cohort study or low-quality RCT">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString
                       value="Individuelle Kohortenstudie oder randomisierte kontrollierte Studien mit niedriger Qualität"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="2b"/>
    </designation>
  </concept>
  <concept>
    <code value="2c"/>
    <display value="2c"/>
    <definition value="Outcomes research; ecological studies">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString value="Outcomes-Forschung; ökologische Studien"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="2c"/>
    </designation>
  </concept>
  <concept>
    <code value="3a"/>
    <display value="3a"/>
    <definition value="Systematic reviews of case-control studies">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString
                       value="Systematische Überprüfung von Fall-Kontroll-Studien"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="3a"/>
    </designation>
  </concept>
  <concept>
    <code value="3b"/>
    <display value="3b"/>
    <definition value="Individual case-control study">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString value="Einzelne Fall-Kontroll-Studie"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="3b"/>
    </designation>
  </concept>
  <concept>
    <code value="4"/>
    <display value="4"/>
    <definition value="Case series">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString value="Fallserie"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="4"/>
    </designation>
  </concept>
  <concept>
    <code value="5"/>
    <display value="5"/>
    <definition value="Expert opinion">
      <extension url="http://hl7.org/fhir/StructureDefinition/translation">
        <extension url="lang">
          <valueCode value="de"/>
        </extension>
        <extension url="content">
          <valueString value="Expertenmeinung"/>
        </extension>
      </extension>
    </definition>
    <designation>
      <language value="de"/>
      <value value="5"/>
    </designation>
  </concept>
</CodeSystem>