@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/Cochrane_Collaboration> .

<https://concepts.sagepub.com/social-science/concept/secondary_data_analysis>
  skos:prefLabel "secondary data analysis"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/Cochrane_Collaboration> .

<https://concepts.sagepub.com/social-science/concept/Cochrane_Collaboration>
  skos:definition "A group of medical researchers who conducts systematic reviews (∗meta-analyses) of the research literature in medicine and make them available both to the public and to other researchers and medical practitioners. It is the model for a similar group in the social sciences, the ∗Campbell Collaboration. [Source: <a href=\"https://methods.sagepub.com/reference/dictionary-of-statistics-methodology/n296.xml\" target=\"_blank\" data-id=\"to-srm\">Dictionary of Statistics &amp; Methodology; Cochrane Collaboration</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/systematic_reviews>, <https://concepts.sagepub.com/social-science/concept/synthesis>, <https://concepts.sagepub.com/social-science/concept/secondary_data_analysis>, <https://concepts.sagepub.com/social-science/concept/randomized_control_trials> ;
  skos:prefLabel "Cochrane Collaboration"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/systematic_reviews>
  skos:prefLabel "systematic reviews"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/Cochrane_Collaboration> .

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

<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/Cochrane_Collaboration> .