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

<https://concepts.sagepub.com/social-science/concept/birth_cohort_analysis>
  skos:definition "A birth cohort is a group of individuals born during a given calendar time period within a specified geographical region. For example, the U.S. 1950 annual birth cohort refers to the group of people born in the United States during the calendar year 1950, and the 1950 to 1952 birth cohort identifies those born during the period covering the three consecutive calendar years 1950, 1951, and 1952. [Source: <a href=\"https://methods.sagepub.com/reference/encyc-of-epidemiology/n44.xml\" target=\"_blank\" data-id=\"to-srm\">Encyclopedia of Epidemiology; Birth Cohort Analysis</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/statistics_and_research_methods>, <https://concepts.sagepub.com/social-science/concept/epidemiological_concepts> ;
  skos:prefLabel "birth cohort analysis"@en ;
  a skos:Concept .

<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/birth_cohort_analysis> .

<https://concepts.sagepub.com/social-science/concept/statistics_and_research_methods>
  skos:prefLabel "statistics and research methods"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/birth_cohort_analysis> .