@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/person-time_units>
  skos:definition "It is common in medicine and epidemiology to express the frequency of occurrence of some event in terms of the number of events per person-time unit; for instance, the number of complications per 100 patient-days or the number of deaths per 100,000 person-years. A good example is the incidence rate, also known as the incidence density or force of morbidity or mortality. [Source: <a href=\"https://methods.sagepub.com/reference/encyc-of-epidemiology/n346.xml\" target=\"_blank\" data-id=\"to-srm\">Encyclopedia of Epidemiology; Person-Time Units</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/statistics_and_research_methods> ;
  skos:prefLabel "person-time units"@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/person-time_units> .

<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/person-time_units> .