Analysis of suicide cases in post-mortem examination files of the Department of Forensic Medicine at the Medical University of Białystok in the years 2016-2021.

The aim of the study: The aim of the study is the analysis of suicides based on forensic autopsies and case files from the Department of Forensic Medicine at the Medical University of Białystok.

Material and methods: The number of forensic autopsies conducted at the Department of Forensic Medicine in Białystok in the years 2016-2021 equaled 2365. On the basis of post-mortem examinations and circumstances of deaths contained in the case files, 391 cases were qualified as suicides. The analysis accounted for gender, age, time, the dynamics of changes in the number of suicides over the years, the place of suicide, the method of committing suicide, and the state of sobriety. The data were subjected to statistical analysis using the following tests: Chi-square test of independence, Shapiro-Wilk test, Mann-Whitney U test, non-parametric Kruskal-Wallis ANOVA by ranks with post hoc multiple comparisons of mean ranks for all samples. A p-value of less than 0.05 was considered statistically significant. The calculations were performed using the Statistica 13.3 package from StatSoft.

Results: In the studied years, suicides accounted for 16.54% of all autopsies. In 82.09% of cases, the suicides were committed by men, and in 17.91% by women. It was found that individuals who chose suicide by poisoning were statistically significantly younger than those who chose suicide by jumping from a height (p=0.0035). A statistically significant correlation was found between gender and the preferred location for committing suicide (p=0.033). A statistically significant correlation was also found between gender and sobriety or the state after alcohol consumption (p=0.00008).

Conclusions: The study shows that the main group of suicides still consists of men (82.09%). The age of women and men committing suicide did not differ significantly. Women were more likely to commit suicide in urban areas than men. Women were statistically significantly more likely to be sober or in a state after alcohol consumption at the time of committing suicide. The most commonly chosen method of suicide was death by hanging.