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Developmental model of suicide trajectories.

Monique Séguin1, Guy Beauchamp1, Marie Robert1

  • 1Monique Séguin, PhD, Université du Québec en Outaouais, Department of Psychology, Gatineau, Québec, and McGill Group for Suicide Studies, Douglas Mental Health University Institute, Montreal, Québec; Guy Beauchamp, PhD, Marie Robert, PhD, Université du Québec en Outaouais, Department of Psychology, Gatineau, Québec; Mélanie DiMambro, MSc, Gustavo Turecki, MD, PhD, McGill Group for Suicide Studies, Douglas Mental Health University Institute, Montreal, Québec, Canada.

The British Journal of Psychiatry : the Journal of Mental Science
|May 10, 2014
PubMed
Summary
This summary is machine-generated.

This study reveals distinct developmental suicide trajectories, with early adversity linked to earlier deaths. Interventions targeting psychosocial challenges in adolescence are crucial for suicide prevention.

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Area of Science:

  • Developmental Psychology
  • Psychiatry
  • Epidemiology

Background:

  • Existing developmental studies on suicide often overlook individual variations in suicide pathways.
  • Understanding diverse suicide trajectories is critical for effective prevention strategies.

Purpose of the Study:

  • To explore developmental models of suicide trajectories using a life course approach.
  • To identify key risk factors and mediating variables associated with different suicide pathways.

Main Methods:

  • Mixed-methods assessment of 214 suicides.
  • Combined discrete-time survival (DTS) and growth mixture modeling (GMM) to identify trajectories.
  • Path analysis (Mplus) and structural equation modeling to determine associated variables.

Main Results:

  • Two distinct suicide trajectory groups were identified, sharing common risk factors but differing in developmental pathways.
  • One group, facing high adversity, died by suicide in their early 20s; the other, with moderate to low adversity, died later.
  • Early suicide trajectories were associated with conduct/behavioral issues, social isolation, school difficulties, relationship endings, and prior attempts.

Conclusions:

  • Psychosocial adversity during adolescence (ages 10-20) represents a critical period for suicide intervention.
  • Tailored interventions addressing specific developmental pathways and risk factors are needed.