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Mistaking immature classroom behaviour with ADHD

Author

Listed:
  • Catherine Haeck
  • Pierre Lefebvre
  • Geneviève Lefebvre
  • Philip Merrigan

Abstract

Original analyses on the connections between school entry age and ADHD diagnoses for children in Quebec → Read the full report In Quebec, children must be 5 years old before October1st to be admitted to kindergarten. In the same class, the youngest students are therefore up to one year younger than the oldest. In this study, the authors show that children born in September have 35% higher rates of ADHD diagnosis and medication than those born in October. ADHD could be confused with inattentive or more turbulent behaviors. Based on unpublished data from the RAMQ, including the medical services records of nearly 800,000 young people born between 1996 and 2005, the authors draw unequivocal conclusions about the extent of the phenomenon and sound the alarm on an issue of great concern. Original analyses on the connections between school entry age and ADHD diagnoses for children in Quebec → Lire le rapport complet Au Québec, les enfants doivent avoir 5 ans avant le 1er octobre pour être admis en maternelle. Dans une même classe, les plus jeunes ont donc jusqu’à un an de moins que les plus vieux. Dans cette étude, les auteurs montrent que les enfants nés en septembre ont des taux de diagnostic et de médication du TDAH 35 % plus élevés que ceux nés en octobre. Le TDAH serait confondu avec des comportements d’inattention ou de plus grande turbulence. S’appuyant sur des données inédites de la RAMQ incluant les dossiers de services médicaux de près de 800 000 jeunes nés entre 1996 et 2005, les auteurs tirent des conclusions non équivoques sur l’ampleur du phénomène et sonnent l’alarme sur un enjeu extrêmement préoccupant.

Suggested Citation

  • Catherine Haeck & Pierre Lefebvre & Geneviève Lefebvre & Philip Merrigan, 2024. "Mistaking immature classroom behaviour with ADHD," CIRANO Papers 2024pj-03, CIRANO.
  • Handle: RePEc:cir:circah:2024pj-03
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    File URL: https://cirano.qc.ca/files/publications/2024PJ-03.pdf
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    References listed on IDEAS

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    1. Fletcher, Jason & Wolfe, Barbara, 2008. "Child mental health and human capital accumulation: The case of ADHD revisited," Journal of Health Economics, Elsevier, vol. 27(3), pages 794-800, May.
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    3. Schwandt, Hannes & Wuppermann, Amelie, 2016. "The youngest get the pill: ADHD misdiagnosis in Germany, its regional correlates and international comparison," Labour Economics, Elsevier, vol. 43(C), pages 72-86.
    4. Evans, William N. & Morrill, Melinda S. & Parente, Stephen T., 2010. "Measuring inappropriate medical diagnosis and treatment in survey data: The case of ADHD among school-age children," Journal of Health Economics, Elsevier, vol. 29(5), pages 657-673, September.
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