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

n9j:-NNRW2XQ5-9
  skos:prefLabel "social research"@en ;
  a skos:Concept ;
  skos:narrower n9j:-NQ23XPKK-3 .

n9j:-methods
  a isothes:ConceptGroup ;
  skos:prefLabel "methods"@en ;
  skos:member n9j:-NQ23XPKK-3 .

n9j: a skos:ConceptScheme .
n9j:-S0TVQBS8-5
  skos:prefLabel "epidemiologic research design"@en ;
  a skos:Concept ;
  skos:narrower n9j:-NQ23XPKK-3 .

n9j:-NQ23XPKK-3
  owl:sameAs <https://concepts.sagepub.com/social-science/concept/crossover_studies> ;
  skos:definition "Crossover studies, sometimes referred to as case-crossover studies, are a type of clinical trial design where a participant experiences both the intervention and control aspects of the study. Participants are first randomized into either the intervention or control arms of a study for a previously determined amount of time and observed. [Source: Encyclopedia of Global Health; Crossover Study]"@en ;
  a skos:Concept ;
  skos:inScheme n9j: ;
  skos:broader n9j:-S0TVQBS8-5, n9j:-NNRW2XQ5-9 ;
  skos:prefLabel "crossover studies"@en ;
  skos:exactMatch <https://id.nlm.nih.gov/mesh/D018592.html> .