@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/randomized_control_trials>
  skos:prefLabel "randomized control trials"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/control_groups> .

<https://concepts.sagepub.com/social-science/concept/control_groups>
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/epidemiologic_research_design>, <https://concepts.sagepub.com/social-science/concept/randomized_control_trials>, <https://concepts.sagepub.com/social-science/concept/statistics_and_research_methods>, <https://concepts.sagepub.com/social-science/concept/experiments>, <https://concepts.sagepub.com/social-science/concept/research_design>, <https://concepts.sagepub.com/social-science/concept/pharmaceuticals_and_clinical_trials> ;
  skos:definition "A control group is a population, within a study, that is compared with an experimental group. An attempt is made to make the control group as like as possible to the experimental group in all factors except in the factor of interest. [Source: <a href=\"https://sk.sagepub.com/reference/healthcaremanagement/n156.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Health Care Management; Control Group</a>]"@en ;
  skos:prefLabel "control groups"@en ;
  skos:exactMatch <https://id.nlm.nih.gov/mesh/D035061.html> .

<https://concepts.sagepub.com/social-science/concept/epidemiologic_research_design>
  skos:prefLabel "epidemiologic research design"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/control_groups> .

<https://concepts.sagepub.com/social-science/concept/experiments>
  skos:prefLabel "experiments"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/control_groups> .

<https://concepts.sagepub.com/social-science/concept/research_design>
  skos:prefLabel "research design"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/control_groups> .

<https://concepts.sagepub.com/social-science/concept/pharmaceuticals_and_clinical_trials>
  skos:prefLabel "pharmaceuticals and clinical trials"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/control_groups> .

<https://concepts.sagepub.com/social-science/concept/statistics_and_research_methods>
  skos:prefLabel "statistics and research methods"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/control_groups> .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/methods>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "methods"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/control_groups> .