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    <owl:Ontology rdf:about="http://purl.obolibrary.org/obo/cmeo.owl">
        <rdfs:label xml:lang="en">Clinical Metadata Exploration Ontology (CMEO)</rdfs:label>
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        <rdfs:label xml:lang="en">comparator specification</rdfs:label>
        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/IAO_0000033"/>
        <ns2:IAO_0000115 xml:lang="en">It refers to a benchmark or reference against which the effects of a medical intervention are compared. In clinical trials, the comparator can be a placebo (an inactive substance designed to resemble the drug being tested), a different dose or regimen of the drug being studied, or a different drug altogether. The choice of comparator is a critical aspect of clinical trial design and can significantly impact the interpretation and applicability of the trial&#39;s results.</ns2:IAO_0000115>
        <dcterms:source xml:lang="en">https://viares.com/blog/clinical-research-explained/comparator/</dcterms:source>
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