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Cohort profile: the Quebec Longitudinal Study of Kindergarten Children (QLSKC)

Alexandra Rouquette1, Sylvana M Côté, Laura E Pryor

  • 1Groupe de Recherche sur l'Inadaptation Psychosociale de l'enfant-GRIP, Université de Montréal, Montréal, Quebec, Canada, U669, Inserm, Paris, France, UMR-S0669, Université Paris-Sud and Université Paris-Descartes, Paris, France, Département de Santé Publique, Université d'Angers, Angers, France, Département de Médecine Sociale et Preventive, Université de Montréal, Montréal, Quebec, Canada, Département de Pédiatrie, Université de Montréal, Montréal, Quebec, Canada, Département de Psychologie, Université de Montréal, Montréal, Quebec, Canada, Ecole de Psychoéducation, Université de Montréal, Montréal, Quebec, Canada and School of Public Health, Physiotherapy and Population Sciences, University College Dublin, Dublin, Ireland.

International Journal of Epidemiology
|November 20, 2012
PubMed

Insights

The Quebec Longitudinal Study of Kindergarten Children (QLSKC) tracks behavioral and emotional problems from childhood to adulthood. This long-term study examines risk factors and consequences across three generations.

Area of Science:

  • Developmental Psychology
  • Child Psychiatry
  • Epidemiology

Background:

  • The Quebec Longitudinal Study of Kindergarten Children (QLSKC) is a population-based prospective study.
  • It investigates behavioral and emotional problems in children over time.

Purpose of the Study:

  • To examine the prevalence, risk factors, development, and consequences of behavioral and emotional problems.
  • To follow participants from kindergarten through early adulthood (ages 6-29).

Main Methods:

  • A cohort of 2000 representative children and 1017 with disruptive behavior problems was recruited.
  • 12 waves of data collected on demographics, psycho-social factors, health, and outcomes.
  • Involved three generations: study child, parents, and study child's offspring.

Main Results:

  • Data collected cover childhood, adolescence, and early adulthood.
  • Assessed outcomes include psychiatric diagnoses, delinquency, and educational attainment.
  • Genetic analyses were performed on blood samples collected in early adulthood.

Conclusions:

  • The QLSKC provides extensive data on developmental trajectories of behavioral and emotional issues.
  • The study offers insights into long-term consequences and genetic factors.
  • Further information on publications and data access is available online.

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