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Differences in characteristics between suicide victims who left notes or not.

Hideki Kuwabara1, Toshiki Shioiri, Akiyoshi Nishimura

  • 1Department of Psychiatry, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi, Niigata 951-8510, Japan.

Journal of Affective Disorders
|May 23, 2006
PubMed
Summary

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Suicide notes (SN) are more common in females and those living alone, often involving lethal methods. Non-note writers tend to cite physical illness or psychiatric disorders as reasons for suicide.

Area of Science:

  • Forensic Psychiatry
  • Psychological Autopsy
  • Suicidology

Background:

  • Suicide notes (SN) offer insights into the mindset of individuals prior to death.
  • Understanding characteristics of note writers can indicate suicide attempt severity.

Purpose of the Study:

  • To investigate demographic and clinical differences between Japanese suicide victims who wrote notes and those who did not.
  • To determine if suicide notes are associated with specific suicide characteristics.

Main Methods:

  • Analysis of over 5000 completed suicide cases in Japan.
  • Utilized multiple logistic regression to compare note writers (NW) and non-note writers (non-NW).
  • Examined variables including gender, age, method, reasons, marital status, living situation, psychiatric history, and physical disease.

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Main Results:

  • Approximately 30.1% of suicide victims were note writers.
  • Note writers were more likely to be female, live alone, and use highly lethal methods (e.g., carbon monoxide, hanging, sharp instruments).
  • Non-note writers more frequently cited physical illness, psychiatric disorders, or a history of psychiatric issues as reasons for suicide.

Conclusions:

  • Suicide notes may serve as an indicator of a more serious suicide attempt.
  • Findings suggest potential ethnic variations in the characteristics of suicide note writers.
  • Further research is warranted to validate the role of suicide notes as a marker of suicide severity.