@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .

<https://lod.nal.usda.gov/naltv#marc001> rdfs:label "Field 001 in MARC Authority Format"@en .
nalt:137073_def
  a <https://lod.nal.usda.gov/naltv#Definition> ;
  rdf:value "Estudio epidemiológico en contraste con los de la enfermedad de interés (casos) que aquellos sin la enfermedad (controles). Los grupos se comparan con respecto al historial de exposición."@es, "An epidemiologic study contrasting those with the disease of interest (cases) to those without the disease (controls). The groups are then compared with respect to exposure history."@en ;
  dc:source "US Environmental Protection Agency" .

<https://lod.nal.usda.gov/nalt>
  a skos:ConceptScheme ;
  rdfs:label "NALT Full"@en .

<https://lod.nal.usda.gov/naltv#Topic>
  a owl:Class ;
  rdfs:label "Topic"@en .

nalt:137073
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Topic> ;
  dc:created "2010-09-01"^^xsd:date ;
  dc:modified "2018-12-03"^^xsd:date ;
  dc:source "Joint Institute for Food Safety and Applied Nutrition (JIFSAN)" ;
  skos:altLabel "case epidemiologic studies"@en, "case control studies"@en, "case epidemiological studies"@en ;
  skos:broader nalt:37565 ;
  skos:closeMatch <http://id.loc.gov/authorities/subjects/sh2008007460> ;
  skos:definition nalt:137073_def ;
  skos:exactMatch <http://id.cabi.org/cabt/24635>, <http://id.agrisemantics.org/gacs/C18953> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  skos:prefLabel "case-control studies"@en, "estudios de caso y control"@es ;
  skos:related nalt:137077, nalt:137083, nalt:22778 ;
  ns0:marc001 "58641" .

nalt:137077
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "observational studies"@en, "estudios de observación"@es ;
  skos:related nalt:137073 .

nalt:137083
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "estudios retrospectivos"@es, "retrospective studies"@en ;
  skos:related nalt:137073 .

nalt:37565
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:137073 ;
  skos:prefLabel "estudios epidemiológicos"@es, "epidemiological studies"@en .

nalt:22778
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "estudios de casos prácticos"@es, "case studies"@en ;
  skos:related nalt:137073 .