@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/quantitative_data_collection>
  skos:prefLabel "quantitative data collection"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/panel_studies> .

<https://concepts.sagepub.com/social-science/concept/attrition>
  skos:prefLabel "attrition"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/panel_studies> .

<https://concepts.sagepub.com/social-science/concept/panel_studies>
  skos:definition "Panel studies involve a special type of reflexive control, which means that the target subjects who receive an intervention are compared to themselves by use of before and after measurements. Panel studies are a repeated-measures design and typically use survey methods for data collection, although interviews and other qualitative data collection methods may also be involved. [Source: <a href=\"https://methods.sagepub.com/reference/encyclopedia-of-evaluation/n391.xml\" target=\"_blank\" data-id=\"to-srm\">Encyclopedia of Evaluation; Panel Studies</a>]"@en ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/time-series_design>, <https://concepts.sagepub.com/social-science/concept/attrition> ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/research_design>, <https://concepts.sagepub.com/social-science/concept/quantitative_data_collection>, <https://concepts.sagepub.com/social-science/concept/historical_research> ;
  skos:prefLabel "panel studies"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/historical_research>
  skos:prefLabel "historical research"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/panel_studies> .

<https://concepts.sagepub.com/social-science/concept/research_design>
  skos:prefLabel "research design"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/panel_studies> .

<https://concepts.sagepub.com/social-science/concept/time-series_design>
  skos:prefLabel "time-series design"@en ;
  a skos:Concept ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/panel_studies> .

<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/panel_studies> .