@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/epidemiologic_data>
  skos:prefLabel "epidemiologic data"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/National_Health_Interview_Survey> .

<https://concepts.sagepub.com/social-science/concept/National_Health_Interview_Survey>
  skos:definition "The National Health Interview Survey (NHIS) is one of a family of health surveys conducted by the National Center for Health Statistics (NCHS), the U.S. government's health statistics agency. The NHIS was authorized in 1956 by an act of Congress, the National Health Survey Act, which stipulated that the NCHS was to supply continuing survey and special studies for protected, precise, and current statistics on illness and disability in the United States. [Source: <a href=\"https://sk.sagepub.com/reference/aging/n192.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Health &amp; Aging; National Health Interview Survey</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/studies_of_aging>, <https://concepts.sagepub.com/social-science/concept/epidemiologic_data> ;
  skos:prefLabel "National Health Interview Survey"@en ;
  a skos:Concept .

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

<https://concepts.sagepub.com/social-science/concept/studies_of_aging>
  skos:prefLabel "studies of aging"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/National_Health_Interview_Survey> .