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Suicide deaths in people with bipolar disorder (BD) show distinct patterns compared to those without BD, including higher rates among females and those with prior attempts. Identifying subgroups within BD suicide is crucial for targeted prevention strategies.

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Area of Science:

  • Psychiatry
  • Public Health
  • Epidemiology

Background:

  • Understanding suicide risk in bipolar disorder (BD) necessitates diagnosis-specific data.
  • Previous models lack detailed insights into BD-related suicide demographics and circumstances.
  • Identifying unique characteristics of suicide in BD is vital for effective intervention.

Purpose of the Study:

  • To compare suicide deaths in individuals with and without bipolar disorder (BD).
  • To identify distinct subgroups within the bipolar disorder suicide population.
  • To inform tailored suicide prevention strategies for BD.

Main Methods:

  • Analysis of suicide deaths in Toronto (1998-2010) from the Office of the Chief Coroner of Ontario.
  • Comparison of demographic, clinical, and stressor variables between BD (n=170) and non-BD (n=2,716) suicide groups.
  • Cluster analysis to identify subgroups within the BD suicide population.

Main Results:

  • Individuals with BD suicide were more likely to be female (OR=1.75), have a history of suicide attempts (OR=2.01), and have recent contact with mental health services (OR=1.59).
  • Five distinct subgroups were identified within the BD suicide population.
  • These subgroups differed in demographics, stressors, substance abuse, and suicide methods.

Conclusions:

  • Significant differences exist between suicide deaths in individuals with and without BD.
  • An illness-specific approach is supported for understanding and preventing suicide in BD.
  • Future research should incorporate identified BD suicide subgroups for enhanced study design and analysis.