Gender Differences in Complex Posttraumatic Stress Symptoms, and Their Relationship to Mental Health and Substance Abuse Outcomes in Incarcerated Adults

Exploring the Role of Reward Functioning in the Overlap of Post-Traumatic Stress and Cocaine Use Disorder

BACKGROUND

Posttraumatic stress disorder (PTSD) symptoms are common in people with cocaine use disorder (CUD), and even sub-threshold PSTD symptoms result in worse treatment outcomes. Difficulties with reward functioning may drive this comorbidity. Impairments in reward functioning are prominent in both PTSD and CUD and contribute to development of substance use problems after trauma. There are three distinct reward processes that may be involved in the PTSD/CUD overlap: consummatory reward (ability to experience pleasure), motivational reward (willingness to exert effort for rewards), and reward learning (adapting behavior based on reward history). Here we test whether impairments in these reward functions account for the relationship between PTSD and CUD symptoms.

METHODS

This is a secondary analysis of data from a clinical trial (NCT02773212) that measured of PTSD symptoms, CUD severity, consummatory reward, motivational reward, and reward learning in 53 treatment-seeking people with CUD.

RESULTS

Greater PTSD symptoms related to (1) more severe CUD and (2) less ability to learn from reward; however, impaired reward learning did not significantly account for the overlap in PTSD and CUD symptom severity.

CONCLUSIONS

The observed relationship between PTSD and CUD symptoms was not accounted for by reduced ability to experience pleasure from rewards, reduced motivation for rewards, or reduced ability to learn from rewards. Thus, treatments that attempt to enhance reward functioning seem unlikely to address this complex comorbidity.

Prevalence and correlates of post-traumatic stress disorder and depression among welfare- and justice-involved adolescents in Nigeria

Background: Childhood maltreatment (CM) is higher among welfare- and justice-involved youth than in those not involved in these systems, which increases the risk of depression and post-traumatic stress disorder (PTSD). However, the mechanisms underlying the link between CM and these two psychiatric conditions are less well understood among at-risk populations in low- and middle-income countries.Objective: This study attempts to fill this gap by examining the prevalence of and risk factors for depression and PTSD among at-risk groups in Nigeria.Method: A cross-sectional research design using multistage sampling was adopted. The sample comprised 205 adolescents: justice-involved [102 (49.8%)] and welfare-involved [103 (50.2%)]. In total, 151 (73.7%) were males, while 54 (26.3%) were females. Multivariate logistic regression analysis and multivariate analysis of variance were applied.Results: The results showed that 66.1% of welfare-involved adolescents and 69.6% of justice-involved adolescents reported PTSD, while 68.9% of welfare-involved adolescents and 75.5% of justice-detained adolescents reported depression. Neglect (OR = 0.253; 95% CI 0.146-0.571; p < .001) and witnessing violence (OR = 0.230; 95% CI 0.114-0.597; p < .004) predicted depression. Emotional abuse (OR = 0.186; 95% CI 0.090-0.80; p < .015), witnessing violence (OR = 0.147; 95% CI 0.014-0.876; p < .043), neglect (OR = 0.187; 95% CI 0.14-0.90; p < .008), and physical abuse (OR = 0.27; 95% CI 0.254-0.937; p < .001) predicted PTSD. Also, PTSD significantly differed based on type of placement (F = 6.08, p < .014, η2 = .029), but depression did not differ based on type of placement (F = 2.46, p > .118, η2 = .012).Conclusions: CM profiles are risk factors in PTSD and depression among at-risk groups. CM screening should be included in mental health services of out-of-home placements to prevent the cycle of mental health problems and reoffending. Trauma-focused and cognitive-behavioural therapies have the potential to alleviate the suffering of traumatized adolescents.

Maltreatment, resilience, and sexual relationship power in a sample of justice-involved women with opioid use disorder

Justice-involved women frequently report maltreatment and intimate relationships characterized by violence and abuse throughout adulthood. The present study aimed to (a) investigate the association between victimization and sexual relationship power (SRP) among justice-involved women with opioid use disorder (OUD) and (b) explore resilience as a potential moderating factor of the association between victimization and SRP. Under the ongoing Kentucky Justice Community Opioid Innovation Network (JCOIN) cooperative, justice-involved women (N = 700) were randomly selected from eight jails in Kentucky, screened for OUD, consented to participate, and interviewed by research staff. SRP was examined using the Sexual Relationship Power Scale, a validated instrument with two distinct subscales measuring decision-making dominance (DMD) and relationship control (RC); prior maltreatment was measured using the Global Appraisal of Individual Needs General Victimization Scale, and resilience was assessed using the Brief Resilience Scale. Linear regression was used to examine the association between maltreatment and SRP, with three models constructed to account for SRP, DMD, and RC, controlled for demographic characteristics. Finally, we examined whether the association between victimization and SRP varied as a function of resilience. Significant negative associations between maltreatment and the SRP were observed, ps < .001. Resilience moderated the association between maltreatment and DMD, p = .005; however, resilience did not moderate the associations between maltreatment and SRP, p = .141, or RC, p = .735. These findings highlight the importance of increasing resilience in justice-involved women with OUD to reduce the impact of maltreatment on SRP. Prioritizing resilience may offer significant benefits for preventing and addressing maltreatment.

Trauma History Questionnaire: validation with novel samples of incarcerated women and perinatal women

Trauma exposure is associated with numerous negative outcomes, many of which are amplified within at-risk populations. Two under-researched and at-risk populations, incarcerated women and perinatal women, both report high rates of trauma, psychopathology, and PTSD compared to the general population. One common measure of trauma exposure in various populations, including incarcerated women and perinatal women, is the Trauma History Questionnaire (THQ). However, no known studies have validated the THQ within these two unique, understudied populations. Using data from two studies of incarcerated women and one study of perinatal women, researchers explored indices of THQ construct, predictive, and convergent validity. The study also included between-sample comparisons, highlighting differences in trauma incidence between the included samples. Analyses supported statistically significant relations between THQ scores and Severity of Violence Against Women Scale (SVAWS), depressive symptoms, PTSD, and psychological distress. Prenatal women's THQ scores were also predictive of later postpartum depressive symptoms. Significantly higher THQ scores were found within the incarcerated samples compared to the perinatal sample. The study results provide further information about trauma within incarcerated and perinatal populations, as well as increase understanding of the utility of trauma assessments within these vulnerable groups.

Gender, sex and complex PTSD clinical presentation: a systematic review

Background: Post-traumatic stress disorder (PTSD) prevalence and clinical presentation reportedly vary with gender and/or sex. Equivalent complex PTSD (CPTSD) research is in its relative infancy and to date no systematic review has been conducted on this topic.Objective: To systematically review the literature and provide a narrative addressing the question of whether gender and/or sex differences exist in CPTSD prevalence and clinical presentation.Method: Embase, PsycINFO, PTSDpubs, PubMed, Web of Science, EThOS and Google Scholar were searched. Twelve papers were eligible for inclusion. Data were extracted and synthesised narratively.Results: Four themes were identified: (i) the reporting of gender and/or sex; (ii) index trauma; (iii) CPTSD prevalence rates; and (iv) CPTSD clinical presentation. Findings were mixed. Nine papers reported prevalence rates: eight found no gender and/or sex differences; one found higher diagnostic rates among women and/or females. Four papers reported clinical presentation: one reported higher cluster-level scores among women and/or females; two used single gender and/or sex samples; and one found higher scores in two clusters in men and/or males. Most papers failed to report in gender- and/or sex-sensitive ways.Conclusions: Gender- and sex-sensitive research and clinical practice is needed. Awareness in research and clinical practice is recommended regarding the intersect between identity and the experience and expression of complex trauma.

Gender differences in borderline personality disorder: a narrative review

Borderline personality disorder (BPD) is a severe and complex mental disorder that traditionally has been found to be more frequent in the female gender in clinical samples. More recently, epidemiological studies have provided conflicting data about the prevalence of borderline disorder in the two genders in community samples. In order to explain this heterogeneity, some authors hypothesized the presence of a bias in the diagnostic criteria thresholds (more prevalent in one gender than another), in the population sampling (community versus clinical), in the instruments of evaluation (clinician versus self-report measures), and in the diagnostic construct of BPD. Beyond the question of the different prevalence of the disorder between genders, the debate remains open as to how personality and clinical characteristics, and attitude toward treatments express themselves in the two genders. This narrative review is aimed to provide an updated overview of the differences among genders in BPD in terms of diagnosis, temperamental and clinical characteristics, comorbidities, findings of neuroimaging, and treatment attitudes. Studies that specifically investigated the gender differences in BPD patients are rather limited. Most of the investigations did not consider gender as a variable or were characterized by a significant imbalance between the two genders (more commonly in favor the female gender). The main results indicated that men were more likely to endorse the criteria "intense and inappropriate anger" and "impulsivity," whereas women endorsed the criteria "chronic feelings of emptiness," "affective instability," and "suicidality/self-harm behaviors." These findings reflect differences in temperament and symptoms of the two genders. Other relevant differences concern pattern of comorbidity, specific neurobiological mechanisms and attitude to treatments. Main limitations were that only one database was searched, time of publications was limited, non-English manuscripts were excluded, and the quality of each paper was not commented.

Potentially Traumatic Events of Women of Color in an Urban Adult Basic Education Program

Adult Basic Education (ABE) in the United States is an important tool for underrepresented and underserved communities to achieve the goal of high school graduation following noncompletion of K-12 education. Largely in urban settings, ABE centers serve millions of students annually, especially historically and contemporarily marginalized groups. ABE provides critical resources and skills to meet the educational needs of diverse peoples seeking to advance their station in life. ABE centers may serve students with potentially traumatic events (PTE), diagnosable trauma, and related poorer outcomes. Alarmingly, a paucity of research exists that examines the presence of PTEs for ABE students, particularly people and women of color. In the present research, the Patient Health Questionnaire 9-item and Generalized Anxiety Disorder 7-item measures were used to weigh depression and anxiety scores across the Life Events Checklist for the DSM-5 (LEC-5) trauma types in a sample (N=170) of predominantly women of color. We examined three respondent groups based on proximity and frequency of PTEs: (1) denied; (2) witnessed/learned about; and (3) experienced. Results indicate that those experiencing higher levels of PTEs (namely, sexual assault, unwanted/uncomfortable sexual experience, and sudden accidental death) also experienced higher ratings of depression and anxiety. More research is indicated, as women of color within ABE settings could benefit from tailored resources for prevention, intervention, and treatment.

Cumulative exposure to traumatic events and craving among women in residential treatment for substance use disorder: The role of emotion dysregulation and mindfulness disposition

Objective

Strong evidence links exposure to traumatic life events with subsequent substance use disorders (SUD). Compared to men, women in SUD treatment are more likely to have a history of trauma, characterized in part by emotion dysregulation known to negatively influence treatment outcomes. Existing research has been conducted with predominantly male and non-Hispanic White samples, with an emphasis on adverse childhood experiences. Little is known about how exposure to cumulative traumatic events across the lifespan affects emotion dysregulation and how this may influence craving, particularly among racial and ethnic minoritized women with SUD. Mindfulness disposition may serve as a protective factor that could buffer the impact of trauma exposure and emotion dysregulation on substance use craving among underrepresented minoritized women with SUD. This study examined the association between cumulative exposure to traumatic events, emotion dysregulation, and mindfulness disposition on substance use craving in a sample of predominantly Hispanic and non-Hispanic Black women in residential treatment for SUD.

Method

Cross-sectional data were analyzed for a baseline sample of 241 women (56.96% Hispanic, 20.7% non-Hispanic White, 20.7% non-Hispanic Black; age: M = 32.11) entering a SUD residential treatment facility who agreed to participate in a parent randomized controlled trial.

Results

Findings indicated that greater cumulative exposure to traumatic events and emotion dysregulation were associated with higher levels of craving. Cumulative traumatic event exposure was indirectly associated with higher craving via lower levels in the mindfulness dimension of acting with awareness. Interaction effects also revealed greater exposure to traumatic events was associated with higher levels of craving among women with low and average (but not high) levels of mindfulness disposition.

Conclusion

These findings provide insight into the potential benefits of targeting emotion regulation and mindfulness-building strategies such as acting with awareness in interventions among racial-ethnically diverse women with SUD. These strategies may be particularly beneficial among those that have experienced extensive histories of trauma exposure. Overall, knowledge gained from the present study can be particularly valuable towards informing treatment models in minoritized groups that currently experience disparities in treatment utilization and outcomes.

Adverse childhood experiences do not moderate the association between aggressive antisocial behavior and general disinhibition in a forensic psychiatric inpatient sample

Adverse childhood experiences (ACE) and high levels of disinhibition have been associated with a variety of negative outcomes such as aggressive antisocial behavior (AAB). However, forensic psychiatric populations remain an understudied group in this field of research. This study aimed to fill that gap by investigating associations between ACE, AAB, and disinhibition in a forensic psychiatric sample. Furthermore, we aimed to explore such findings by investigating whether ACE might have a moderating effect on the association between disinhibition and AAB. A sample of forensic psychiatric patients (n = 89) was recruited from a high-security forensic psychiatric facility in Sweden. All study variables were moderately to strongly related to each other, although we found no moderating effect of ACE. Post hoc analysis indicated that our ACE items had differential effects on AAB scores, with placement outside the family home, absent parents, and parental drug abuse producing the largest effect on AAB levels. Our findings are in line with previous research demonstrating a significant and robust relationship between ACE, AAB, and disinhibition. Forensic psychiatric populations are exposed to high levels of both self-reported and documented ACE. This calls for trauma-informed care and highlights the importance of considering ACE in risk assessment, preventive work, and policy making.

Is Illicit Substance Use Gender-Specific? The Basic Points of Mental and Health Disorders

Among the groups of users of illicit substances, a high percentage are persons deprived of their liberty; at the same time, each social and age group is also affected, to one degree or another. The purpose of this study is to provide general data on the relationship between different psychostimulants, clinical and socio-demographic studies, and gender, both among the general population and in one of the most at-risk groups. This review identifies the use of illicit substances as gender-specific in the general population. A detailed study of the causal relationship between the use of illicit substances and gender was carried out. Electronic databases Academic Search Complete, PubMed, HealthCare, Web of Science, and Google Scholar were searched for relevant studies up to 2022 associated with drug abuse and mental and health disorders. The analysis indicated that the human population showed significant differences between the sex of the consumer as to the type of drug consumers, development of addiction, and relapse. We focus on the pathological changes caused by drug use, the personal and physiological individual traits that influence drug choice, and the extent of use in one of the most affected groups of individuals. The study may provide some guidance in developing gender-specific treatment and prevention, including response to some pharmacological and behavioral therapies. The review is intended for a wide audience of social workers, toxicologists, and pharmacologists.

Childhood trauma and food addiction: The role of emotion regulation difficulties and gender differences

OBJECTIVE

Childhood trauma has been associated with substance use disorders (SUDs), but less research has investigated its association with food addiction (i.e., compulsive intake of highly processed foods containing refined carbohydrates and/or added fat). Existing research on childhood trauma and food addiction has focused primarily on women from restricted samples. Further, emotion dysregulation difficulties are implicated in both childhood trauma and food addiction, but research has not explored whether it may play a mediating role.

METHOD

Thus, the current study utilizes a sample of 310 participants recruited from Amazon Mechanical Turk (mean age = 41.3 years old, 47.4% men, 78.7% white) to investigate the mediating role of emotion dysregulation in the association between childhood trauma and food addiction. We also conducted exploratory analyses to investigate for gender differences in these associations. Gender-stratified correlational matrixes were conducted to investigate association between childhood trauma, food addiction, and emotional dysregulation. Moderated mediation models and multilevel regressions were also conducted to identify the role of gender in the association between childhood trauma, food addiction, and emotion dysregulation.

RESULTS

Emotion dysregulation was found to partially mediate the associations between food addiction and childhood trauma and gender was found to moderate associations between childhood trauma and emotion dysregulation, as well as childhood trauma and food addiction. Both moderating pathways were significantly stronger for men compared to women.

DISCUSSION

Results suggests that emotion dysregulation may be one important mediator in the association between childhood trauma and food addiction, particularly for men. The identification of other potential mechanisms contributing to the association between childhood trauma and food addiction and the use of longitudinal measurement strategies will be important in future research.

Change in prevalence of post-traumatic stress disorder in the two years following trauma: a meta-analytic study

Background

Understanding the course of post-traumatic stress disorder (PTSD) and the factors that impact this is essential to inform decisions about when and for whom screening and intervention are likely to be beneficial.

Objective

To provide meta-analytic evidence of the course of recovery from PTSD in the first year following trauma, and the factors that influence that recovery.

Method

We conducted a meta-analysis of observational studies of adult PTSD prevalence which included at least two assessments within the first 12 months following trauma exposure, examining prevalence statistics through to 2 years post-trauma. We examined trauma intentionality (intentional or non-intentional), PTSD assessment method (clinician or self-report), sample sex distribution, and age as moderators of PTSD prevalence over time.

Results

We identified 78 eligible studies including 16,484 participants. Pooled prevalence statistics indicated that over a quarter of individuals presented with PTSD at 1 month post-trauma, with this proportion reducing by a third between 1 and 3 months. Beyond 3 months, any prevalence changes were detected over longer intervals and were small in magnitude. Intentional trauma, younger age, and female sex were associated with higher PTSD prevalence at 1 month. In addition, higher proportions of females, intentional trauma exposure, and higher baseline PTSD prevalence were each associated with larger reductions in prevalence over time.

Conclusions

Recovery from PTSD following acute trauma exposure primarily occurs in the first 3 months post-trauma. Screening measures and intervention approaches offered at 3 months may better target persistent symptoms than those conducted prior to this point.

HIGHLIGHTS

PTSD rates in the immediate aftermath of trauma exposure decline from 27% at 1 month to 18% at 3 months post-trauma, showing significant spontaneous recovery.Problems appear to stabilize after 3 months.Screening/intervention for PTSD at 3 months post-trauma is indicated.

Childhood adversity patterns differentially cluster with mental disorders and socioeconomic indicators in a large Swiss community sample

BACKGROUND

Exposure to childhood adversities (CHAD) has been found to be strongly associated with individuals' mental health and social development. Recently, it has been suggested that certain CHAD patterns exist in the population, which are more closely related to individuals' later mental health than the simple summation of adversities. The current study aims 1) to establish CHAD patterns based on self-reported child abuse and family dysfunction and 2) to assess their associations with mental disorders and sociodemographic indicators reported in adulthood.

METHODS

Data used in this cross-sectional study were derived from the representative CoLaus/PsyCoLaus population-based cohort (N = 5111, 35 to 88 years). Latent class analysis was conducted for the identification of CHAD patterns, while their associations with mental disorders and socioeconomic achievements (e. g. education and income) were investigated using correspondence analysis.

RESULTS

Four CHAD patterns emerged. While the majority (70.7%) of the sample showed an overall low adversity pattern (c1), 13.6% had not been raised by both of their biological parents due to divorce or being placed in foster home (c2), 11.0% had been raised by conflictive / dysfunctional / abusive parents (c3), and 4.7% showed high overall adversities (c4). Patterns c3 and c4 were most strongly associated with various mental disorders, especially c3 with internalizing anxiety disorders, while c2 was closely related to lower educational achievement.

CONCLUSIONS

Four CHAD patterns characterised by varying levels of child abuse and family dysfunction existed in this community sample. They yielded distinct associations with mental disorders and socioeconomic indicators.

Associations among betrayal trauma, dissociative posttraumatic stress symptoms, and substance use among women involved in the criminal legal system in three US cities

BACKGROUND

Betrayal trauma, as defined by (Freyd, 1996), refers to a subcategory of trauma characterized by a significant violation of trust surrounding interpersonal maltreatment (physical, sexual, or emotional). Previous research has shown that people with betrayal trauma histories experience greater dissociative symptoms of posttraumatic stress disorder and co-morbid substance use disorder symptoms. Women in the criminal legal system commonly have significant histories of betrayal trauma and related posttraumatic stress symptoms and substance use. However, no studies have specifically explored the impact of dissociative posttraumatic stress symptoms on substance use outcomes in this population. Additionally, no studies have explored whether betrayal trauma relates to nonfatal overdoses.

METHODS

This cross-sectional survey study of N = 508 women with criminal legal system involvement examined the indirect effects of betrayal trauma history on substance use outcomes through dissociative posttraumatic stress symptoms.

RESULTS

Multivariate analyses supported an indirect effect of betrayal trauma on substance use severity, daily substance use, and history of overdose, but not alcohol use severity, through dissociative symptoms.

CONCLUSIONS

Women in the criminal legal system with betrayal trauma and dissociative symptoms may be at risk for substance use and related outcomes (i.e., overdose). Future work is needed to examine whether targeting such symptoms may improve substance use treatment and prevention of serious outcomes in this population.

Trauma exposure and mental health of prisoners and ex-prisoners: A systematic review and meta-analysis

The present meta-analytic review examined the associations between different forms of trauma and mental disorders among prisoners and ex-prisoners. Studies published from 1998 to March 31 2021 were identified by searching PsycINFO, PubMed, Medline and Web of Science. Data were meta-analyzed using a random-effect model. Moderator and mediator analyses were conducted. The protocol was registered in PROSPERO (CRD42020181587). We identified 62 studies (50 non-duplicated samples) with 15,115 (97.86%) prisoners and 330 (2.14%) ex-prisoners in 16 countries. A multi-level meta-analysis found that overall trauma was positively associated with more diagnoses or symptoms of mental disorders (Zr = 0.198, 95% CI = [0.167, 0.229], p < 0.001). Stronger effect sizes were found between childhood trauma (Zr = 0.357, 95% CI = [0.147, 0.568], p < 0.01) and sexual trauma (Zr = 0.326, 95% CI = [0.216, 0.435], p < 0.001) and stress-related disorders. Multilevel moderator analysis showed that effect size was stronger in imprisonment trauma (β = 0.247, 95% CI = [0.177, 0.316], p < 0.01), mixed trauma (β = 0.234, 95% CI = [0.196, 0.272], p < 0.001), and stress-related disorders (β = 0.261, 95% CI = [0.214, 0.307], p < 0.01). Associations between trauma and mental disorders were mediated by social support but not coping. Our findings provide an evidence base for future research on the impact of trauma and inform assessments and interventions in correctional settings.

Females have more complex patterns of childhood adversity: implications for mental, social, and emotional outcomes in adulthood

Background: Adverse childhood experiences (ACEs) have been identified as an important public health problem with serious implications. Less well understood is how distinct configurations of childhood adversities carry differential risks for mental health, emotional, and social outcomes later in life. Objective: To determine if distinct profiles of childhood adversities exist for males and females and to examine if unique associations exist between the resultant latent profiles of childhood adversities and multiple indicators of mental health and social and emotional wellbeing in adulthood. Method: Participants (N = 1,839) were a nationally representative household sample of adults currently residing in the USA and the data were collected via online self-report questionnaires. Latent class analysis was used to identify the optimal number of classes to explain ACE co-occurrence among males and females, separately. ANOVAs, chi-square tests, and t-tests were used to compare male and female classes across multiple mental health, emotional, and social wellbeing variables in adulthood. Results: Females were significantly more likely than males to report a range of ACEs and mental health, social, and emotional difficulties in adulthood. Two- and four-class models were identified as the best fit for males and females, respectively, indicating more complexity and variation in ACE exposures among females. For males and female, ACEs were strongly associated with poorer mental health, emotional, and social outcomes in adulthood. Among females, growing up in a dysfunctional home environment was a significant risk factor for adverse social outcomes in adulthood. Conclusions: Males and females have distinct patterns of childhood adversities, with females experiencing more complex and varied patterns of childhood adversity. These patterns of ACEs were associated with numerous negative mental, emotional, and social outcomes among both sexes.

PTSD in prison settings: A systematic review and meta-analysis of comorbid mental disorders and problematic behaviours

Purpose

Prevalence rates of PTSD are higher in the prison population than in the community. We sought to systematically review the extent to which this disorder is associated with other mental health disorders and problematic suicidal or aggressive behaviours in the prison population.

Methods

Studies reporting a relationship between PTSD and comorbid mental disorders and/or problematic behaviours in imprisoned adolescent and adult populations were identified from four bibliographic indexes. Primary studies involving clinical interviews, validated instruments leading to DSM or ICD diagnoses, or validated self-report questionnaires such as the PTSD checklist were included. Random-effects meta-analysis was conducted where possible. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed.

Results

This review identified 36 studies, with a combined sample of 9594 participants, (6478 male and 2847 female prisoners) from 11 countries. Thirty-four of the identified studies employed a cross-sectional design. We identified significant associations between PTSD and comorbid mental disorders including depression (OR = 3.4, 95% confidence interval (CI): 2.3–4.9), anxiety (OR = 2.9, 95% confidence interval (CI): 1.8–4.7) and substance use (OR = 1.9, 95% confidence interval (CI): 1.5–2.4). We also identified significant associations between PTSD and suicidality (OR = 3, 95% confidence interval (CI): 2.4–3.8) and aggressive behaviours (this latter finding was not subject to meta-analysis). Significant methodological heterogeneity was identified between studies.

Conclusions

High rates of psychiatric comorbidity among prisoners with PTSD, and links to suicidal behaviour, self-harm and aggressive behaviour, provide further support for the need for trauma-informed treatment approaches in prisons. However, significant gaps in the current evidence were apparent. In particular, a lack of large, longitudinal studies meant that the temporal relationships between PTSD and relevant outcomes cannot currently be determined.