@prefix n9j: <http://data.loterre.fr/ark:/67375/N9J> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

n9j:-MM432TCL-D
  skos:prefLabel "follow up studies"@en ;
  a skos:Concept ;
  skos:broader n9j:-XZ499VXQ-K .

n9j: a skos:ConceptScheme .
n9j:-XZ499VXQ-K
  owl:sameAs <https://concepts.sagepub.com/social-science/concept/longitudinal_studies> ;
  skos:narrower n9j:-MM432TCL-D, n9j:-VVT5456C-R ;
  skos:definition "Longitudinal studies or panel studies are studies where the research settings involve multiple follow-up measurements on a random sample of individuals, such as their achievement, performance, behavior, or attitude, over a period of time with logically spaced time points. The purpose of longitudinal research studies is to gather and analyze quantitative data, qualitative data, or both, on growth, change, and development over time. [Source: Encyclopedia of Survey Research Methods; Longitudinal Studies]"@en ;
  a skos:Concept ;
  skos:inScheme n9j: ;
  skos:broader n9j:-L5QFL68H-X ;
  skos:prefLabel "longitudinal studies"@en ;
  skos:exactMatch <https://id.nlm.nih.gov/mesh/D008137.html> .

n9j:-VVT5456C-R
  skos:prefLabel "followup studies"@en ;
  a skos:Concept ;
  skos:broader n9j:-XZ499VXQ-K .

n9j:-concepts
  a isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member n9j:-XZ499VXQ-K .

n9j:-L5QFL68H-X
  skos:prefLabel "cohort studies"@en ;
  a skos:Concept ;
  skos:narrower n9j:-XZ499VXQ-K .