Projects and publications

Association of hyperactivity-impulsivity and inattention symptom profiles with suicide attempt: an 18-year population-based cohort study

The aim was to investigate the longitudinal associations between childhood profiles of ADHD symptoms (i.e., hyperactivity–impulsivity and inattention) and youth suicide attempt in males and females, separately.

• Data used: Québec Longitudinal Study of Child Development, 1st edition (QLSCD 1), data from QSCDK and data from the Quebec Newborn Twin Study (QNTS)
• Publication: July 2025
• Source
  Spodenkiewicz, M., Inja, A., Cortese, S., Galera, C., Ouellet-Morin, I., Côté, S. M., et al. (2025). Association of hyperactivity–impulsivity and inattention symptom profiles with suicide attempt: an 18-year population-based cohort study. BMJ Mental Health, 28:e301725. https://doi.org/10.1136/bmjment-2025-301725.

Associations between childhood receptive vocabulary and suicide attempt during adolescence and young adulthood

Children's language skills are key to good socioemotional development. Higher childhood receptive language scores were associated with lower internalizing behavioural problems, but little is known about their association with later suicide risk. This study investigates associations between childhood receptive vocabulary scores and youth suicide attempt.

• Data used: Québec Longitudinal Study of Child Development, 1st edition (QLSCD 1)
• Publication: July 2025
• Source
  Wong, J. H. L., Oncioiu, S.-I., Girard, L.-C., Séguin, J. R., Côté, S. M., et al. (2025). Associations between childhood receptive vocabulary and suicide attempt during adolescence and young adulthood. Journal of Affective Disorders, 391. https://doi.org/10.1016/j.jad.2025.119930.

Factors Associated with Young Adults’ Career Information Seeking Behavior and Sources of Information

This study aims to identify the factors associated with career information seeking behavior in a sample of 1,400 young adults in the province of Québec, and the information sources they used when collecting information on jobs, career possibilities, further education or training. Results show that more than half of respondents consulted two sources or more and that the most used information sources are personal relationships and educational institutions.

• Data used: Québec Longitudinal Study of Child Development, 1st edition (QLSCD 1)
• Publication: September 2025
• Source
  Supeno, E., Bourdon, S., & Lapointe-Garant, M.-P. (2025). Factors Associated with Young Adults’ Career Information Seeking Behavior and Sources of Information. The Canadian Journal of Information and Library Science / La Revue canadienne des sciences de l’information et de bibliothéconomie, 48(2), 81–93. https://doi.org/10.5206/cjils-rcsib.v48i2.17816.

Investigating variations in paid parental leave uptake among mothers: a Canadian longitudinal population-based study

This study examines how child, maternal, family, and health-related determinants contribute to variations in the uptake of paid maternal leave.

• Data used: Québec Longitudinal Study of Child Development, 2nd edition (QLSCD 2)
• Publication: August 2025
• Source
  Julien, C., Nazif-Munoz, J. I., Fitzpatrick, C., Lemieux, A., Melchior, M., et al. (2025). Investigating variations in paid parental leave uptake among mothers: a Canadian longitudinal population-based study. Community, Work & Family, 1–14. https://doi.org/10.1080/13668803.2025.2545282.

Étude sur la relation coparentale vue par les pères dans l’Enquête québécoise sur la parentalité : Être parent au Québec en 2022 [in French only]

La professeure Tamarha Pierce, de l’école de psychologie de l’Université Laval, à la demande du Regroupement pour la valorisation de la paternité, a analysé les données de l’Enquête québécoise sur la parentalité portant sur la relation coparentale, du point de vue des pères en couple et séparés, et son lien avec leur expérience parentale.

• Données utilisées : Enquête québécoise sur la parentalité
• Publication: 2025

• Source : Regroupement pour la valorisation de la paternité

Trajectories of Single- or Multiple-Substance Use in a Population Representative Sample of Adolescents: Association with Substance-Related and Psychosocial Problems at Age 17

• Data used: Québec Longitudinal Study of Child Development, 2nd edition (QLSCD 2)
• Published: March 2025
• Source : Carbonneau, R.; Vitaro, F.; Brendgen, M.; Boivin, M.; Côté, S.M.; Tremblay, R.E. Trajectories of Single- or Multiple-Substance Use in a Population Representative Sample of Adolescents: Association with Substance-Related and Psychosocial Problems at Age 17. Brain Sci. 2025, 15, 331. https://doi.org/10.3390/brainsci15040331.

Incidence, prevalence, and mortality of localized scleroderma in Quebec, Canada: a population-based study

Quebec populational health administrative databases were used to identify localized scleroderma cases from 1989 to 2019.

• Data used: health administrative data (MED-ÉCHO, FIPA)
• Published: April 2025
• Source : Stephanie Ghazal, Anastasiya Muntyanu, Katherine Aw, Mohammed Kaouache, Lauren Khoury, Maryam Piram, Catherine McCuaig, Gaëlle Chédeville, Elham Rahme, Mohammed Osman, Jordana Schachter, Janie Bertrand, Elena Netchiporouk. (2025). Incidence, prevalence, and mortality of localized scleroderma in Quebec, Canada: a population-based study. The Lancet Regional Health - Americas, Volume 44, https://doi.org/10.1016/j.lana.2025.101044.

Perinatal risk factors for young adults to be not engaged in employment, education or training (NEET) and its mediators: longitudinal analysis of the QLSCD cohort study

In 2019, 31% and 14% of young women and men worldwide – respectively – reported being not engaged in employment, education, or training (NEET), an important indicator of long-term socioeconomic vulnerability. This study examined the developmental pathways leading to NEET status in young adulthood by investigating the association between perinatal adversities and NEET status and the mediating role of adolescent externalizing behaviours.

• Data used: Québec Longitudinal Study of Child Development, 2nd edition (QLSCD 2)
• Published: February 2025
• Source : Falutz, R., Orri, M., Boivin, M. et al. Perinatal risk factors for young adults to be not engaged in employment, education or training (NEET) and its mediators: longitudinal analysis of the QLSCD cohort study. Soc Psychiatry Psychiatr Epidemiol (2025). https://doi.org/10.1007/s00127-025-02841-3.