Non-suicidal self-injury and co-occurring suicide attempt in male prisoners

Pattern of non-suicidal self-injury in Chinese male prisoners: A latent class analysis

OBJECTIVES

Nonsuicidal self-injury (NSSI) occurs more frequently in the prisoner population than in the general population. Monitoring and management of this behavior is challenging because NSSI may present in diverse ways. People often use more than one method of NSSI, and there are many possible combinations of these behaviors. We used latent class analysis (LCA) to identify subgroups of male inmates based on methods and frequency of NSSI.

METHODS

A total of 1042 male prisoners in China (Mage  = 38.45, SD = 10.67) completed measures of hopelessness, sensation seeking, identity integration, and suicidal ideation, and NSSI was assessed in a structured interview.

RESULTS

Results of the LCA supported a three-class model: high-NSSI (1.8%), moderate-NSSI (8.0%), and no-or-negligible NSSI (90.2%). Multinomial logistic regression analyses showed that prisoners in the high-NSSI and moderate-NSSI classes were significantly more likely than those in the no-or-negligible NSSI class to show high hopelessness, high sensation seeking, and low identity. Furthermore, suicidal ideation was significantly higher in the high-NSSI and moderate-NSSI classes than in the no-or-negligible NSSI class.

CONCLUSIONS

Classifying groups of prisoners based on features of NSSI is potentially useful for understanding risk factors and for developing tailored prevention and treatment strategies.

The incidence and profile of self-harm among prisoners: findings from the Self-Harm Assessment and Data Analysis Project 2017-2019

PURPOSE

Internationally, rates of suicide and lifetime self-harm are higher in prisoners compared to the general population. This study aims to identify specific characteristics of self-harming behaviour and to establish a profile of prisoners who engage in self-harm.

DESIGN/METHODOLOGY/APPROACH

Data from the Self-Harm Assessment and Data Analysis Project (SADA) on self-harm episodes in prisons in the Republic of Ireland during 2017-2019 was used. Annual rates per 1,000 were calculated by age and gender.

FINDINGS

The rate of self-harm between 2017 and 2019 was 31 per 1,000 prisoners for men and six times higher at 184 per 1,000 prisoners for women. The rate of self-harm was twice as high among prisoners on remand than sentenced prisoners (60.5 versus 31.3 per 1,000). The highest rates of self-harm among sentenced prisoners were observed among 18-29-year-old men (45 per 1,000) and women (125 per 1,000). The rate of self-harm was higher among women prisoners in all age groups. Contributory factors associated with self-harm were mainly related to mental health but also linked to a prisoner's environment and relationships.

PRACTICAL IMPLICATIONS

There is a need to ensure access to timely and suitable mental health services, including both appropriate referral and provision of evidence-based mental health interventions to address the needs of these cohorts.

ORIGINALITY/VALUE

To the best of the authors' knowledge, this is the first national study to systematically examine incidence and patterns of self-harm among the prison population in Ireland. The recording of severity/intent of each episode is novel when assessing self-harm among the prison population.

Disparities affecting incarcerated burn-injured patients: Insight from the National Burn Repository

OBJECTIVE

Incarcerated patients are a vulnerable population and little is known regarding the epidemiology of burn injury and subsequent outcomes. This study utilizes a national database to assess disparities in care affecting this understudied population.

METHODS

The National Burn Repository was queried for adult patients discharged into custody. Patients discharged to jail were compared to those with other dispositions. Additional analysis of the incarcerated patients compared those injured while in custody to those injured prior to incarceration.

RESULTS

Between 2002-2011, 809 patients were discharged to jail with 283 (35.0%) sustaining these injuries while in custody. Patients were predominantly male (86.2%) and White (52.3%), with median age 35.7 years (IQR 27.7-45.9). Incarcerated patients had significantly higher rates of drug abuse and psychiatric illness. They had significantly smaller burns (2.0% vs. 3.8%, p < 0.001) and were less likely to undergo an operation but had comparable lengths of stay in the hospital.

CONCLUSIONS

Although incarcerated burn-injured patients sustain smaller injuries and receive fewer operations they remain hospitalized for similar durations as non-incarcerated patients. Enhanced understanding of burn etiologies and injury characteristics as well as improved insight into the impact of psychosocial factors such as substance abuse and prevalence of psychiatric disorders may help improve care.

A meta-analysis of co-occurrence of non-suicidal self-injury and suicide attempt: Implications for clinical intervention and future diagnosis

BACKGROUND

Non-suicidal self-injury (NSSI) and suicide attempt (SA) are risk behaviors that lead to physical injury and even death in individuals, and are a very powerful risk factor when both occur together, with individuals presenting with more severe psychological and behavioral problems. Due to the different demographic characteristics of different study subjects, an overall understanding of the incidence and occurrence of this co-occurrence is lacking to clarify the focus of clinical interventions and future research directions.

METHODS

A systematic search was conducted for relevant studies in English and Chinese that reported data on co-occurring non-suicidal self-injury and suicide attempts as of May 2022. The incidence of co-occurrence of non-suicidal self-injury and suicide attempt (NSSI + SA) was calculated using Stata version 16.0 software based on a random-effects model, and the differences in incidence in different populations were compared by subgroups of age group, comorbidity, and time of occurrence. The study was written in strict accordance with PRISMA norms and registration was completed on the PROSPERO platform (CRD42022329095).

RESULTS

A total of 37 studies (139,573 individuals) were included for meta-analysis, and the combined incidence of non-suicidal self-injury and suicide attempt co-occurrence was 9.6%. Among different groups, the prevalence of NSSI + SA was 10, 11, 6, and 26% in adolescents and young adults, adults, the general population, and people with mental illness, respectively, and the co-occurrence of NSSI + SA within 12 months was 17%.

CONCLUSION

There is a significant group with a history of both non-suicidal self-injury and suicide attempts and presenting with more severe symptoms clinically. Targeted prevention and intervention are urgently needed, but the direction of intervention needs further research on the occurrence trajectory of this co-occurrence.

SYSTEMATIC REVIEW REGISTRATION

http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42022329095, identifier: CRD42022329095.

Distinguishing prisoners who think about suicide from those who attempt suicide

BACKGROUND

Many people who consider suicide do not translate these intentions into action. Although prisoners constitute a particularly high-risk group for suicide, little is known about the factors that distinguish those who think about suicide from those who attempt suicide.

METHODS

Participants were 1326 adult offenders (1203 men) randomly selected from 15 Belgian prisons, representing 14% of the national prison population. Multivariate regression analysis compared prisoners who attempted suicide (n = 277) with those who thought about suicide but never made an attempt (n = 312) on a range of established risk factors.

RESULTS

Among the 589 participants reporting a lifetime history of suicidal ideation (44% of the total sample), almost half (47%) had made a suicide attempt. Relative to those who only thought about suicide, participants who attempted suicide were more likely to be violent offenders (aOR 2.33, 95% CI 1.49-3.62) and have a history of non-suicidal self-injury (aOR 3.19, 95% CI 2.09-4.86). The presence of self-reported mental disorder diagnosis (aOR = 2.84, 95% CI 1.91-4.24) and illicit substance abuse (aOR = 2.01, 95% CI 1.24-3.28) also independently differentiated prisoners who attempted v. considered suicide.

CONCLUSION

This study provides preliminary evidence that behavioural and mental health factors are implicated in the transition from thoughts to acts of suicide in prisoners. Prospective studies are warranted to explore whether these risk factors predict progression from ideation to action over time.

What Differentiates Prisoners Who Attempt Suicide from Those Who Experience Suicidal Ideation? A Nationally Representative Study

OBJECTIVE

Many people who think about suicide do not engage in suicidal behavior. Identifying risk factors implicated in the process of behavioral enaction is crucial for suicide prevention, particularly in high-risk groups such as prisoners.

METHOD

Cross-sectional data were drawn from a nationally representative sample of 17,891 prisoners (79% men) in the United States. We compared prisoners who attempted suicide (attempters; n = 2,496) with those who thought about suicide but never made an attempt (ideators; n = 1,716) on a range of established risk factors.

RESULTS

More than half (59%) of participants who experienced suicidal ideation had also attempted suicide. Violent offending, trauma, brain injury, alcohol abuse, and certain mental disorders distinguished attempters from ideators.

CONCLUSION

Our results fit within recent ideation-to-action theories that emphasize the role of a capability for suicide in the transition from thoughts to acts of suicide.

Mental disorders and risk of suicide attempt in prisoners

BACKGROUND

Mental disorders are overrepresented in prisoners, placing them at an increased risk of suicide. Advancing our understanding of how different mental disorders relate to distinct stages of the suicidal process-the transition from ideation to action-would provide valuable information for clinical risk assessment in this high-risk population.

METHODS

Data were drawn from a representative sample of 1212 adults (1093 men) incarcerated across 13 New Zealand prisons, accounting for 14% of the national prison population. Guided by an ideation-to-action framework, three mutually exclusive groups of participants were compared on the presence of mental disorders assessed by validated DSM-IV diagnostic criteria: prisoners without any suicidal history (controls; n = 778), prisoners who thought about suicide but never made a suicide attempt (ideators; n = 187), and prisoners who experienced suicidal ideation and acted on such thoughts (attempters; n = 247).

RESULTS

One-third (34.6%) of participants reported a lifetime history of suicidal ideation, of whom 55.6% attempted suicide at some point (19.2% of all prisoners). Suicidal outcomes in the absence of mental disorders were rare. Whilst each disorder increased the odds of suicidal ideation (OR range 1.73-4.13) and suicide attempt (OR range 1.82-4.05) in the total sample (n = 1212), only a select subset of disorders was associated with suicide attempt among those with suicidal ideation (n = 434). Drug dependence (OR 1.65, 95% CI 1.10-2.48), alcohol dependence (OR 1.89, 95% CI 1.26-2.85), and posttraumatic stress disorder (OR 2.09, 95% CI 1.37-3.17) distinguished attempters from ideators.

CONCLUSION

Consistent with many epidemiological studies in the general population, our data suggest that most mental disorders are best conceptualized as risk factors for suicidal ideation rather than for suicide attempt. Once prisoners consider suicide, other biopsychosocial factors beyond the mere presence of mental disorders may account for the progression from thoughts to acts of suicide.

Risk factors for self-harm in prison: a systematic review and meta-analysis

BACKGROUND

Self-harm is a leading cause of morbidity in prisoners. Although a wide range of risk factors for self-harm in prisoners has been identified, the strength and consistency of effect sizes is uncertain. We aimed to synthesise evidence and assess the risk factors associated with self-harm inside prison.

METHODS

In this systematic review and meta-analysis, we searched four electronic databases (PubMed, Embase, Web of Science, and PsycINFO) for observational studies on risk factors for self-harm in prisoners published from database inception to Oct 31, 2019, supplemented through correspondence with authors of studies. We included primary studies involving adults sampled from general prison populations who self-harmed in prison and a comparison group without self-harm in prison. We excluded studies with qualitative or ecological designs, those that reported on lifetime measures of self-harm or on selected samples of prisoners, and those with a comparison group that was not appropriate or not based on general prison populations. Data were extracted from the articles and requested from study authors. Our primary outcome was the risk of self-harm for risk factors in prisoners. We pooled effect sizes as odds ratios (OR) using random effects models for each risk factor examined in at least three distinct samples. We assessed study quality on the basis of the Newcastle-Ottawa Scale and examined between-study heterogeneity. The study protocol was registered with PROSPERO, CRD42018087915.

FINDINGS

We identified 35 independent studies from 20 countries comprising a total of 663 735 prisoners, of whom 24 978 (3·8%) had self-harmed in prison. Across the 40 risk factors examined, the strongest associations with self-harm in prison were found for suicide-related antecedents, including current or recent suicidal ideation (OR 13·8, 95% CI 8·6-22·1; I2=49%), lifetime history of suicidal ideation (8·9, 6·1-13·0; I2=56%), and previous self-harm (6·6, 5·3-8·3; I2=55%). Any current psychiatric diagnosis was also strongly associated with self-harm (8·1, 7·0-9·4; I2=0%), particularly major depression (9·3, 2·9-29·5; I2=91%) and borderline personality disorder (9·2, 3·7-22·5; I2=81%). Prison-specific environmental risk factors for self-harm included solitary confinement (5·6, 2·7-11·6; I2=98%), disciplinary infractions (3·5, 1·2-9·7; I2=99%), and experiencing sexual or physical victimisation while in prison (3·2, 2·1-4·8; I2=44%). Sociodemographic (OR range 1·5-2·5) and criminological (1·8-2·3) factors were only modestly associated with self-harm in prison. We did not find clear evidence of publication bias.

INTERPRETATION

The wide range of risk factors across clinical and custody-related domains underscores the need for a comprehensive, prison-wide approach towards preventing self-harm in prison. This approach should incorporate both population and targeted strategies, with multiagency collaboration between the services for mental health, social care, and criminal justice having a key role.

FUNDING

Wellcome Trust.