Suicide in Jail: A Ten-Year Retrospective Study

The contributing factors to suicide in Italian prisons: An 11-year analysis (2010-2020)

BACKGROUND

Suicide is a leading cause of death globally, with approximately 800,000 deaths annually and accounting for 1.5% of all deaths. Risk factors are multifaceted, encompassing individual factors (such as genetics, family history and mental illnesses) and environmental factors (such as economic conditions, social support and life events). In prisons, suicide rates are markedly higher than in the general population, particularly in Italy, where the prisoner suicide rate is approximately 20 times that of the non-incarcerated population. There is, however, little research on suicide in Italian prisons.

AIMS

To analyse the characteristics of all people who died by suicide in Italian prisons between 2010 and 2020.

METHODS

We carried out a records-based cohort study analysing official data from the Italian Ministry of Justice on prison suicides between 2010 and 2020. The data were cross-referenced and, when required, supplemented with information from Ristretti Orizzonti, a journal specialising in health and living conditions in prisons, as well as from the website of ISTAT (Italian National Statistical Institute), newspapers, radio broadcasts and news agencies.

RESULTS

Factors associated with an increased risk of suicide in prisons were nighttime periods, the months of June, July and October, a relatively brief duration of detention (<6 months), having been convicted of murder, male gender, being about 40 years old, having access to hanging materials and being interned (i.e. subjected to the execution of custodial security measures) or awaiting trial. Prison overcrowding was not a risk factor for suicide.

CONCLUSION

Our findings hold substantial implications for suicide prevention in Italian prisons as they suggest both characteristics of individuals and characteristics of the institutions that could be taken as risk indicators. This knowledge can inform the development of targeted interventions to manage both individual and environmental factors better, leading to improved prison conditions and reduced suicide rates. Furthermore, our research establishes a foundation for more systematic and in-depth investigations that could further improve suicide prevention strategies in Italian prisons, ultimately influencing policy changes in both practice and research, including perhaps establishing a national database on every completed suicide in prisons.

Suicide in prison and after release: a 17-year national cohort study

Background

People in prison have an extremely high risk of suicide. The aim of this paper is to describe all suicides in the Norwegian prison population from 2000 to 2016, during and following imprisonment; to investigate the timing of suicides; and to investigate the associations between risk of suicide and types of crime.

Methods

We used data from the Norwegian Prison Release study (nPRIS) including complete national register data from the Norwegian Prison Register and the Norwegian Cause of Death Register in the period 1.1.2000 to 31.12.2016, consisting of 96,856 individuals. All suicides were classified according to ICD-10 codes X60-X84. We calculated crude mortality rates (CMRs) per 100,000 person-years and used a Cox Proportional-Hazards regression model to investigate factors associated with suicide during imprisonment and after release reported as hazard ratios (HRs).

Results

Suicide accounted for about 10% of all deaths in the Norwegian prison population and was the leading cause of death in prison (53% of in deaths in prison). The CMR per 100,000 person years for in-prison suicides was 133.8 (CI 100.5–167.1) and was ten times higher (CMR = 1535.0, CI 397.9–2672.2) on day one of incarceration. Suicides after release (overall CMR = 82.8, CI 100.5–167.1) also peaked on day one after release (CMR = 665.7, CI 0–1419.1). Suicide in prison was strongly associated with convictions of homicide (HR 18.2, CI 6.5–50.8) and high-security prison level (HR 15.4, CI 3.6–65.0). Suicide after release was associated with convictions of homicide (HR 3.1, CI 1.7–5.5).

Conclusion

There is a high risk of suicide during the immediate first period of incarceration and after release. Convictions for severe violent crime, especially homicide, are associated with increased suicide risk, both in prison and after release.

Supplementary Information

The online version contains supplementary material available at 10.1007/s10654-021-00782-0.

Uncommon suicide methods in the detention regime in Milan (1993-2019): Forensic contribution on autopsy cases

We analysed the recorded cases of suicides committed other than by hanging in prison in Milan. A retrospective analysis was conducted on 25,512 autopsies performed from 1993 to 2019, selecting all the suicides in prison but our attention was focused solely on cases where an alternative mode to hanging was used. From a total of 97 suicide events in prison, 15 were consistent with the established search criteria: 6 victims died from plastic bag suffocation, 4 by direct inhalation of butane gas, 2 associated plastic bag suffocation to inhalation of butane gas, one committed suicide with an edged weapon, one by self-burning and, finally, one by voluntary ingestion of a food to which he was allergic, with the intent of inducing an anaphylactic shock. Our analysis has shown that the landscape of prison suicides is diverse, not limited solely to hanging. Therefore, it is necessary for the forensic scientific community to raise awareness of potentially unusual suicide methods in prisons and, in the same way, for the Penitentiary Administration to put adequate preventive measures and strategies in place.