@prefix n9j: <http://data.loterre.fr/ark:/67375/N9J> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

n9j:-concepts
  a isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member n9j:-P1MG87TG-T .

n9j:-P1MG87TG-T
  owl:sameAs <https://concepts.sagepub.com/social-science/concept/retrospective_study> ;
  skos:definition "Retrospective studies are epidemiologic studies characterized by an exposure or outcome of interest that has occurred in the past. A retrospective study design enables an investigator or epidemiologist to identify possible associations between exposures and outcomes, but generally not causal relationships. [Source: Encyclopedia of Global Health; Retrospective Study]"@en ;
  a skos:Concept ;
  skos:inScheme n9j: ;
  skos:broader n9j:-HW4DD369-P ;
  skos:prefLabel "retrospective study"@en .

n9j:-HW4DD369-P
  skos:prefLabel "health services research"@en ;
  a skos:Concept ;
  skos:narrower n9j:-P1MG87TG-T .

n9j: a skos:ConceptScheme .