Analysis of Suicide Notes: An experience in Eskişehir City

Understanding for Prevention: Qualitative and Quantitative Analyses of Suicide Notes and Forensic Reports

Suicide risk is associated with vulnerabilities and specific life events. The study's objective was to explore the relevance of data from forensic documentation on suicide deaths to the design of person-centered preventive strategies. Descriptive and thematic analyses were conducted of forensic observations of 286 deaths by suicide, including some with suicide notes. Key findings included the influence of health-and family-related adverse events, emotional states of loss and sadness, and failures of the health system to detect and act on signs of vulnerability, as confirmed by the suicide notes. Forensic documentation provides useful information to improve the targeting of preventive campaigns.

Differences between suicide note leavers and other suicides: A German psychological autopsy study

INTRODUCTION

Suicide notes are not only the last personal message from the suicide victim to the bereaved, but are also a valuable source for research in preventing suicides. However, not all suicide victims leave a suicide note and it is unclear whether note leavers are representative of the general population of suicide victims.

METHODS

The aim of our study was to compare suicide victims who leave a suicide note compared to those who do not. Therefore, data from the Allgäu Suicide Study, which comprised detailed information on N = 626 suicides, were analysed using multiple regression analyses.

RESULTS

Of N = 612 cases with complete data, n = 255(42%) left a suicide note and n = 357 (58%) did not. Persons who wrote suicide notes before they killed themselves were more often female, less often married, found themselves more often in a financial or partnership crisis, and were more likely to suffer from a medical illness. They tended to poison themselves more often and were less likely to have a history of alcohol abuse disorder.

CONCLUSION

Suicide notes are one source to better understand the motives, which lie behind suicides and therefore may help to further develop and improve suicide prevention programs. Keeping in mind that suicide has heterogeneous reasons, the group of "note writers" might be one, which might especially have benefitted from psychosocial and psychotherapeutic interventions, as interpersonal relationships obviously played an important role even shortly before suicide.

Last Words: Are There Differences in Psychosocial and Clinical Antecedents Among Suicide Decedents Who Leave E-Notes, Paper Notes, or No Note?

OBJECTIVE

Only a minority of suicide decedents leave a suicide note. Typically, the notes are handwritten on paper; however, electronic suicide notes have been reported with increasing frequency. This emerging phenomenon remains generally under-researched. The aim of this study was to compare the psychosocial and clinical antecedents of suicide decedents who left E-notes with those who left paper notes or no notes.

METHOD

The study was embedded in the Southwestern Ontario Suicide Study (SOSS). The SOSS was a three-year case series of consecutive deaths by suicide that occurred in the region between 2012 and 2014. Data on psychosocial and clinical antecedents were collected with a modified version of the Manchester questionnaire used in the UK.

RESULTS

Of the 476 suicides files reviewed, 45.8% contained a suicide note. A total of 383 separate suicide notes were left: 74.3% were paper notes and 25.7% were E-notes. The results of the multivariate regression analyses indicate that the likelihood of leaving a suicide note was negatively associated with a history of admissions to a mental health unit, while the likelihood of leaving an E-note was negatively associated with age, positively associated with presence of a mental disorder, and negatively associated with history of hospital admissions.

CONCLUSIONS

Future studies with larger samples need to consider the timing of the text messages, and appraise whether there was the intent of seeking help or rescue in the text messages.

Detecting Suicidal Ideation on Forums: Proof-of-Concept Study

BACKGROUND

In 2016, 44,965 people in the United States died by suicide. It is common to see people with suicidal ideation seek help or leave suicide notes on social media before attempting suicide. Many prefer to express their feelings with longer passages on forums such as Reddit and blogs. Because these expressive posts follow regular language patterns, potential suicide attempts can be prevented by detecting suicidal posts as they are written.

OBJECTIVE

This study aims to build a classifier that differentiates suicidal and nonsuicidal forum posts via text mining methods applied on post titles and bodies.

METHODS

A total of 508,398 Reddit posts longer than 100 characters and posted between 2008 and 2016 on SuicideWatch, Depression, Anxiety, and ShowerThoughts subreddits were downloaded from the publicly available Reddit dataset. Of these, 10,785 posts were randomly selected and 785 were manually annotated as suicidal or nonsuicidal. Features were extracted using term frequency-inverse document frequency, linguistic inquiry and word count, and sentiment analysis on post titles and bodies. Logistic regression, random forest, and support vector machine (SVM) classification algorithms were applied on resulting corpus and prediction performance is evaluated.

RESULTS

The logistic regression and SVM classifiers correctly identified suicidality of posts with 80% to 92% accuracy and F1 score, respectively, depending on different data compositions closely followed by random forest, compared to baseline ZeroR algorithm achieving 50% accuracy and 66% F1 score.

CONCLUSIONS

This study demonstrated that it is possible to detect people with suicidal ideation on online forums with high accuracy. The logistic regression classifier in this study can potentially be embedded on blogs and forums to make the decision to offer real-time online counseling in case a suicidal post is being written.