Sociodemographic, Criminological and Clinical Determinants in Suicide After Release From Prison: A 23-Year National Cohort Study

12/10/2026

AI Summary

Markedly elevated suicide risk after prison release, peaking immediately and remaining substantially higher than the general population.
Strongest independent risk factors within six months: prior self-harm, severe mental illness, release from high security prisons and pretrial detention.
Women show higher standardized mortality ratios than men; suicides after release account for substantial years of life lost.

TL;DR (AI Generated)

We aimed to describe characteristics of individuals who die by suicide after release from Norwegian prisons, compare their suicide mortality with the general population, and examine risk factors over time.

In multivariable models (2009-2022; n = 57,034; 516 suicides), strong independent associations with suicide 6 months post-release included self-harm (adjusted HR [aHR] 4.76; 95% CI 2.60-8.72), severe mental illness (aHR 1.95; 95% CI 1.16-3.27), release from high-security prisons (aHR 1.93; 95% CI 1.12-3.33), and pretrial detention (aHR 1.82; 95% CI 1.06-3.13).

Basic summary

Acta Psychiatr Scand. 2026 Oct 11. doi: 10.1111/acps.70148. Online ahead of print.

ABSTRACT

BACKGROUND: Suicide risk is elevated after prison release, but population-level evidence on temporal risk patterns and associated factors remains limited. We aimed to describe characteristics of individuals who die by suicide after release from Norwegian prisons, compare their suicide mortality with the general population, and examine risk factors over time.

MATERIAL AND METHODS: Data from the Norwegian Prison Release Study (nPRIS), including all people in prison in Norway (2000-2022), were linked to the Norwegian Cause of Death Registry, the Norwegian Prison Registry, the Norwegian Patient Registry, and Statistics Norway. We calculated crude mortality rates (CMR) per 100,000 person-years, standardized mortality ratios (SMR), annual age-standardized years of life lost rate (ASYR), and Cox proportional hazards models.

RESULTS: From 2000 to 2022, 1183 suicides (9.1% of all deaths; CMR 81; 95% CI 76-85) occurred after release (90% male). The SMR was higher in women (SMR 8.64; 95% CI 7.17-10.34) than men (SMR 3.98; 95% CI 3.76-4.22). In multivariable models (2009-2022; n = 57,034; 516 suicides), strong independent associations with suicide 6 months post-release included self-harm (adjusted HR [aHR] 4.76; 95% CI 2.60-8.72), severe mental illness (aHR 1.95; 95% CI 1.16-3.27), release from high-security prisons (aHR 1.93; 95% CI 1.12-3.33), and pretrial detention (aHR 1.82; 95% CI 1.06-3.13).

CONCLUSIONS: Suicide risk is substantially and persistently elevated relative to the general population, peaks immediately after release, and is concentrated among people with prior self-harm, severe mental illness, and those released from high-security settings.

PMID:42860240 | DOI:10.1111/acps.70148

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