title: Developmental model of suicide trajectories.
abstract: BACKGROUND
  Most developmental studies on suicide do not take into account individual variations in suicide trajectories.
  
  
  OBJECTIVE
  Using a life course approach, this study explores developmental models of suicide trajectories.
  
  
  METHODS
  Two hundred and fourteen suicides were assessed with mixed methods. Statistical analysis using combined discrete-time survival (DTS) and growth mixture modelling (GMM) generated various trajectories, and path analysis (Mplus) identified exogenous and mediating variables associated with these trajectories.
  
  
  RESULTS
  Two groups share common risk factors, and independently of these major risk factors, they have different developmental trajectories: the first group experienced a high burden of adversity and died by suicide in their early 20s; and the second group experienced a somewhat moderate or low burden of adversity before they took their own life. Structural equation modelling identified variables specific to the early suicide trajectory: conduct and behavioural difficulties, social isolation/conflicts mediated by school-related difficulties, the end of a love relationship, and previous suicide attempts.
  
  
  CONCLUSIONS
  Psychosocial adversity between 10 and 20 years of age may warrant key periods of intervention.
authors.affiliation: Monique 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.
authors.forename: Monique
authors.initials: M
authors.lastname: Séguin
authors.affiliation: Monique 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.
authors.forename: Guy
authors.initials: G
authors.lastname: Beauchamp
authors.affiliation: Monique 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.
authors.forename: Marie
authors.initials: M
authors.lastname: Robert
authors.affiliation: Monique 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.
authors.forename: Mélanie
authors.initials: M
authors.lastname: DiMambro
authors.affiliation: Monique 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.
authors.forename: Gustavo
authors.initials: G
authors.lastname: Turecki
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006801:Humans; D008016:Life Change Events; D008297:Male; D008960:Models, Psychological; D011792:Quebec / Q000453:epidemiology; D012307:Risk Factors; D013405:Suicide / Q000523:psychology* / Q000706:statistics & numerical data; D055815:Young Adult