Suicidal Self-Directed Violence Among Homeless US Veterans: A Systematic Review

Socioeconomic Correlates of Suicidal Ideation in Military Veterans: Examining the Interaction Between Homelessness and Financial Debt

Studies in veterans have yet to examine interconnections between homelessness, financial debt, and suicidal ideation. We analyzed data from a nationally-representative study conducted in 2021 of low-income U.S. veterans (N = 1,004). Analyses revealed veterans who were younger, male, had a history of criminal arrests, met criteria for posttraumatic stress disorder (PTSD), reported greater loneliness, or had both a history of homelessness and higher debt were more likely to endorse suicidal ideation. We found an interaction between a history of homelessness and current debt: 40% of veterans with both past homelessness and higher debt reported suicidal ideation, whereas only 10% of veterans with either past homelessness or higher debt reported suicidal ideation. As past homelessness and current debt interacted to increase the odds of suicidal ideation in a national sample of veterans, these results inform policy and clinical decision-making for suicide prevention and in programs serving veterans experiencing homelessness.

Suicide risk screening and evaluation among patients accessing VHA services and identified as being newly homeless

OBJECTIVE

To evaluate universal suicide risk screening and evaluation processes among newly homeless Veterans.

STUDY SETTING

Not applicable.

STUDY DESIGN

Examination of Veterans Health Administration (VHA) using newly homeless patients' health record data in Calendar Year 2021.

DATA COLLECTION

Not applicable.

DATA SOURCE

Health record data.

PRINCIPAL FINDINGS

Most patients received suicide risk screening and/or evaluation in the year prior to and/or following homeless identification (n = 49,505; 87.4%). Smaller percentages of patients were screened and/or evaluated in close proximity to identification (n = 7358; 16.0%), 1-30 days prior to identification (n = 12,840; 39.6%), or 1-30 days following identification (n = 14,263; 34.3%). Common settings for screening included primary care, emergency and urgent care, and mental health services. Of positive screens (i.e., potentially elevated risk for suicide), 72.6% had a Comprehensive Suicide Risk Evaluation (CSRE) completed in a timely manner (i.e., same day or within 24 h). Age, race, and sex were largely unrelated to screening and/or evaluation.

CONCLUSIONS

Although many newly identified homeless patients were screened and/or evaluated for suicide risk, approximately 13% were not screened; and 27% of positive screens did not receive a timely CSRE. Continued efforts are warranted to facilitate suicide risk identification to ensure homeless patients have access to evidence-based interventions.

Role of homelessness and psychiatric disorders in suicide deaths among veterans: A four-way decomposition analysis

Homelessness and suicide are top priorities in the U.S. Department of Veterans Affairs (VA). This study examined the various pathways involving homelessness, substance use, and mental health disorders in relation to suicide deaths among veterans in the VA healthcare system. A retrospective cohort study was conducted among 6,128,921 veterans-399,125 homeless and 5,729,796 non-homeless-followed-up between 2017 and 2021 using VA/Department of Defense linked databases. Multivariable Cox regression was applied for homelessness and psychiatric disorders as predictor of suicide deaths, sequentially controlling for demographic, clinical, substance use, and mental health characteristics. Four-way decomposition analysis was used to calculate proportions of suicide deaths mediated and/or moderated by homelessness, substance use, and mental health disorders. The relationship between homelessness and suicide-specific mortality risk was reduced from 40 % greater risk in unadjusted to 9 % greater risk in fully-adjusted models. Nearly 26 % of the total effect of homelessness on suicide-specific mortality risk was mediated by substance use disorders, whereas 49 % was mediated and 36 % was moderated by mental health disorders. In conclusion, excess suicide-specific mortality risk in homeless veterans is partly explained by substance use and mental health disorders, highlighting the importance of wrap-around health and social services for homeless veterans in mitigating suicide risk.

Predicting Homelessness Among Transitioning U.S. Army Soldiers

INTRODUCTION

This study develops a practical method to triage Army transitioning service members (TSMs) at highest risk of homelessness to target a preventive intervention.

METHODS

The sample included 4,790 soldiers from the Study to Assess Risk and Resilience in Servicemembers-Longitudinal Study (STARRS-LS) who participated in 1 of 3 Army STARRS 2011-2014 baseline surveys followed by the third wave of the STARRS-LS online panel surveys (2020-2022). Two machine learning models were trained: a Stage-1 model that used administrative predictors and geospatial data available for all TSMs at discharge to identify high-risk TSMs for initial outreach; and a Stage-2 model estimated in the high-risk subsample that used self-reported survey data to help determine highest risk based on additional information collected from high-risk TSMs once they are contacted. The outcome in both models was homelessness within 12 months after leaving active service.

RESULTS

Twelve-month prevalence of post-transition homelessness was 5.0% (SE=0.5). The Stage-1 model identified 30% of high-risk TSMs who accounted for 52% of homelessness. The Stage-2 model identified 10% of all TSMs (i.e., 33% of high-risk TSMs) who accounted for 35% of all homelessness (i.e., 63% of the homeless among high-risk TSMs).

CONCLUSIONS

Machine learning can help target outreach and assessment of TSMs for homeless prevention interventions.

Association of homelessness and diet on the gut microbiome: a United States-Veteran Microbiome Project (US-VMP) study

Military veterans account for 8% of homeless individuals living in the United States. To highlight associations between history of homelessness and the gut microbiome, we compared the gut microbiome of veterans who reported having a previous experience of homelessness to those from individuals who reported never having experienced a period of homelessness. Moreover, we examined the impact of the cumulative exposure of prior and current homelessness to understand possible associations between these experiences and the gut microbiome. Microbiome samples underwent genomic sequencing and were analyzed based on alpha diversity, beta diversity, and taxonomic differences. Additionally, demographic information, dietary data, and mental health history were collected. A lifetime history of homelessness was found to be associated with alcohol use disorder, substance use disorder, and healthy eating index compared to those without such a history. In terms of differences in gut microbiota, beta diversity was significantly different between veterans who had experienced homelessness and veterans who had never been homeless (P = 0.047, weighted UniFrac), while alpha diversity was similar. The microbial community differences were, in part, driven by a lower relative abundance of Akkermansia in veterans who had experienced homelessness (mean; range [in percentages], 1.07; 0-33.9) compared to veterans who had never been homeless (2.02; 0-36.8) (P = 0.014, ancom-bc2). Additional research is required to facilitate understanding regarding the complex associations between homelessness, the gut microbiome, and mental and physical health conditions, with a focus on increasing understanding regarding the longitudinal impact of housing instability throughout the lifespan.IMPORTANCEAlthough there are known stressors related to homelessness as well as chronic health conditions experienced by those without stable housing, there has been limited work evaluating the associations between microbial community composition and homelessness. We analyzed, for the first time, bacterial gut microbiome associations among those with experiences of homelessness on alpha diversity, beta diversity, and taxonomic differences. Additionally, we characterized the influences of diet, demographic characteristics, military service history, and mental health conditions on the microbiome of veterans with and without any lifetime history of homelessness. Future longitudinal research to evaluate the complex relationships between homelessness, the gut microbiome, and mental health outcomes is recommended. Ultimately, differences in the gut microbiome of individuals experiencing and not experiencing homelessness could assist in identification of treatment targets to improve health outcomes.

Factors associated with a lack of health care utilization among Veterans after a positive suicide screen in the emergency department

OBJECTIVES

Many Veterans at high risk for suicide are identified in Veterans Health Administration (VHA) emergency departments (ED). Little is known about what may predict care utilization in this population. To address this knowledge gap, we explored factors associated with Veterans' lack of VHA care utilization following a positive suicide risk screen in the ED.

METHODS

In a retrospective observational study, we identified all patients who were seen in a VHA ED from October 1, 2019, to September 30, 2020. We examined factors associated with not utilizing VHA mental health (MH) and all VHA care in the 6 months following a positive suicide ED screen. Predictors included comorbidity, homelessness, and MH visit and diagnosis history.

RESULTS

We identified 23,446 Veterans with a positive suicide risk screen in the ED in fiscal year 2020. Overall, 4.1% had no VHA MH visits 6 months postscreen. The probability of not utilizing MH care was significantly higher for Veterans with no comorbidity (4.7% vs. 3.4% for mild comorbidity), no MH diagnosis (10.5% vs 2.8%), no past-year MH visits (13.6% vs 2.3%), and no past-year homelessness (5.4% vs. 1.1%). A smaller proportion of the population did not receive any VHA care 6 months postscreen (0.5%). Veterans who did not experience homelessness (0.6% vs 0.2%), had no MH diagnosis (1.6% vs. 0.3%), and had no previous MH visits (1.9% vs 0.2%) were significantly more likely to not utilize VHA care.

CONCLUSIONS

Veterans who do not utilize VHA care after a positive suicide risk screen appear to have fewer documented health and housing concerns than those who do receive care. Yet, Veterans with a positive suicide risk screen who are otherwise healthy may remain at elevated risk for suicide following their ED visit. ED providers may consider enhanced follow-up care to mitigate suicide risk for these Veterans.

Homelessness and health-related outcomes: an umbrella review of observational studies and randomized controlled trials

BACKGROUND

Homelessness has been associated with multiple detrimental health outcomes across observational studies. However, relatively few randomized controlled trials (RCTs) have been conducted on people who experience homelessness (PEH). Thus, this umbrella review ranked the credibility of evidence derived from systematic reviews (SRs) and meta-analyses (MAs) of observational studies investigating the associations between homelessness and any health outcome as well as RCTs targeting health needs in this population.

METHODS

Several databases were systematically searched from inception through April 28, 2021. Any SR and/or MA reporting quantitative data and providing a control group were eligible for inclusion. The credibility of the evidence derived from observational studies was appraised by considering the significance level of the association and the largest study, the degree of heterogeneity, the presence of small-study effects as well as excess significance bias. The credibility of evidence was then ranked in five classes. For SRs and/or MAs of RCTs, we considered the level of significance and whether the prediction interval crossed the null. The AMSTAR-2 and AMSTAR-plus instruments were adopted to further assess the methodological quality of SRs and/or MAs. The Newcastle-Ottawa Scale (NOS) was employed to further appraise the methodological quality of prospective cohort studies only; a sensitivity analysis limited to higher quality studies was conducted.

RESULTS

Out of 1549 references, 8 MAs and 2 SRs were included. Among those considering observational studies, 23 unique associations were appraised. Twelve of them were statistically significant at the p≤0.005 level. Included cases had worst health-related outcomes than controls, but only two associations reached a priori-defined criteria for convincing (class I) evidence namely hospitalization due to any cause among PEH diagnosed with HIV infection, and the occurrence of falls within the past year among PEH. According to the AMSTAR-2 instrument, the methodological quality of all included SRs and/or MAs was "critically low." Interventional studies were scant.

CONCLUSION

While homelessness has been repeatedly associated with detrimental health outcomes, only two associations met the criteria for convincing evidence. Furthermore, few RCTs were appraised by SRs and/or MAs. Our umbrella review also highlights the need to standardize definitions of homelessness to be incorporated by forthcoming studies to improve the external validity of the findings in this vulnerable population.

Establishing a Research Agenda for Suicide Prevention Among Veterans Experiencing Homelessness

Suicide among Veterans experiencing or at risk for homelessness remains a significant public health concern. Conducting research to understand and meet the needs of this at-risk population remains challenging due to myriad factors (e.g., clinical complexity including multimorbidity, difficulty monitoring risk across systems). To address this challenge, the United States Department of Veterans Affairs (VA) convened the Health Services Research and Development (HSR&D) Suicide Prevention in Veterans Experiencing Homelessness: Research and Practice Development meeting, bringing together subject-matter experts in the fields of homelessness and suicide prevention, both from within and outside of VA. During the meeting, attendees identified 10 potential research priorities at the intersection of suicide prevention and homelessness. After the meeting, Delphi methodology was used to achieve consensus on the relative importance of the identified research domains. Through this iterative Delphi process, agreement was reached regarding the need to increase understanding of barriers and facilitators to suicide risk assessment and emergency intervention for Veterans experiencing homelessness by examining the perspectives of both Veterans and healthcare providers. Elucidating the complex relationships between risk periods, subgroups, suicide means, and drivers of suicide among Veterans experiencing homelessness was also considered a top priority. This article documents the Delphi process and provides a research agenda for researchers, funding agencies, and policymakers to prioritize the most relevant and potentially impactful research domains aimed at preventing suicide among Veterans experiencing or at risk for homelessness.

Understanding the Intersection of Homelessness and Justice Involvement: Enhancing Veteran Suicide Prevention Through VA Programming

BACKGROUND

Veterans with a history of homelessness and justice involvement are at greater risk for mental health sequelae, including suicide.

OBSERVATIONS

A bidirectional relationship exists between criminal justice involvement and housing instability (ie, the institutional circuit). Homelessness and justice involvement often represent a vicious cycle that is difficult to escape. The US Department of Veterans Affairs (VA) has a number of programs focused on connecting homeless and justice-involved veterans to health and social services. This paper reviews existing programing and initiatives within such services to detect risk for suicide and connect these veterans to appropriate evidence-based mental health care.

CONCLUSIONS

The VA currently has several programs focused on enhancing care for homeless and justice-involved veterans, many of which currently incorporate suicide prevention initiatives. Understanding of factors that may impact health service delivery of suicide risk assessment and intervention may be beneficial in order to enhance veteran suicide prevention efforts.

Association of lifetime homelessness and justice involvement with psychiatric symptoms, suicidal ideation, and suicide attempt among post-9/11 veterans

Both homelessness and criminal justice involvement can impact mental health symptoms and increase risk for suicide. Despite this, few studies have examined their cumulative impact. Moreover, no studies to date have examined the impact of these social determinants of health on post-9/11 veterans, a population with high rates of housing insecurity and justice involvement. The current study sought to better understand the adverse impacts of homelessness and justice involvement on mental health symptoms and suicide risk among post-9/11 veterans. We carried this out by conducting a secondary analysis of cross-sectional data from a 2018 national survey of men and women post-9/11 veteran users and non-users of Veterans Health Administration (VHA) services (N = 15,067). Gender-stratified Poisson and multivariate regressions examined mental health symptoms and suicide risk based on history of homelessness and justice involvement. Models adjusted for sociodemographics, military-related variables, and trauma exposure. Homelessness and justice involvement were both independently associated with more severe posttraumatic, depressive, and substance use symptoms as well as increased rates of suicidal ideation and attempt relative to those with no history of homelessness or justice involvement. Veterans with a history of both homelessness and justice involvement reported the most severe mental health symptoms and suicide risk. This study found consistent positive associations with mental health symptoms for homelessness and justice-involved veterans. Enhancing and increasing access to services that address complex mental health presentation among those with histories of justice involvement and housing instability remain necessary.

Risk for depression and suicidal ideation among food insecure US veterans: data from the National Health and Nutrition Examination Study

BACKGROUND

Suicide and food insecurity (i.e., lack of access to food) are two major issues that affect US Veterans.

PURPOSE

Using a US-based sample, we evaluated the association between food insecurity and suicidal ideation among Veterans. Because depression often precedes suicide, we also examined the association between food insecurity and depression.

METHODS

Using data from 2630 Veterans who participated in the National Health and Nutrition Examination Survey 2007-2016, we conducted an adjusted linear regression model to evaluate the association between food insecurity (measured using 18-item Household Food Security Survey) and depression (measured using PHQ-9) and an adjusted binary logistic regression model to evaluate the association between food insecurity and suicidal ideation (measured using PHQ-9 Question 9). Models were adjusted for gender, age, income-to-poverty ratio, race/ethnicity, and education level.

RESULTS

Of the sample, 11.5% were food insecure, depression scores averaged 2.86 (SD = 4.28), and 3.7% endorsed suicidal ideation. Veterans with marginal (β = 0.68, 95%CI [0.09,1.28]), low (β = 1.38, 95%CI [0.70,2.05]) or very low food security (β = 3.08, 95%CI [2.34, 3.83]) had significantly increased depression scores compared to food secure Veterans. Veterans with low (OR = 2.15, 95%CI [1.08, 4.27]) or very low food security (OR = 3.84, 95%CI [2.05, 7.20]) had significantly increased odds for suicidal ideation compared to food secure Veterans.

CONCLUSION

Food insecurity in Veterans is associated with increased depression symptoms and suicidal ideation. This association strengthens as food insecurity worsens. Veterans with food insecurity should be screened for depression and suicidal ideation. Simultaneously, depression treatment plans and suicide prevention programs should consider basic needs like food security.

Review of Reported Adverse Events Occurring Among the Homeless Veteran Population in the Veterans Health Administration

BACKGROUND

United States veterans face an even greater risk of homelessness and associated medical conditions, mental health conditions, and fatal and nonfatal overdose as compared with nonveterans. Beginning 2009, the Department of Veterans Affairs developed a strategy and allocated considerable resources to address veteran homelessness and the medical conditions commonly associated with this condition.

OBJECTIVE

This study aimed to examine the Veterans Health Administration National Center for Patient Safety database for patient safety events in the homeless veteran population to mitigate future risk and inform policy.

METHODS

This was a retrospective, descriptive quality improvement study of reported patient safety events of homeless veterans enrolled in Veterans Health Administration care between January 2012 and August 2020. A validated codebook was used to capture individual patient characteristics, location and type of event, homeless status, and root causes of the events and proposed actions for prevention.

RESULTS

Suicide attempt or death, elopement, delay in care, and unintentional opioid overdose were the most common adverse events reported for this population. Root causes include issues with policies, procedures, and care processes for managing and evaluating homeless patients for the risk of suicidal or overdose behaviors and discharge, poor interdisciplinary communication, and coordination of patient care. Actions included standardization of procedures for discharge, overdose and suicide risk, staff education, and purchasing new equipment.

CONCLUSIONS

Suicide and opioid overdose are the most serious reported health care-related adverse events in the unsheltered homeless veteran population. Failures to recognize homelessness status, communicate status, and coordinate available services are root causes of these events.

Utilization of Electroconvulsive Therapy for Older Homeless Adults Covered by Medicare

This study sought to examine the association between homelessness and receipt of electroconvulsive therapy (ECT) among older Medicare beneficiaries with homelessness. Among individuals with major depressive disorder who were older (age 65+) Medicare beneficiaries (2014-2015 data), we compared clinical and sociodemographic characteristics among those who were homeless and received ECT, those who were not homeless and received ECT, those who were homeless and did not receive ECT, and those who were domiciled and did not receive ECT. The unadjusted rate of ECT use among older homeless individuals with depression (1.46%) was higher than the rate of ECT use among older non-homeless individuals with depression (0.41%). Among all individuals receiving ECT, homeless individuals started as inpatients at a greater rate (94.0% v. 72.6%) and transitioned to outpatient ECT at a lower rate (23.8% v. 44.5%) compared to their domiciled counterparts. The individuals in the ECT/homeless group had more psychiatric comorbidities compared to all other groups. After adjusting for significant covariates, homelessness was associated with a lower odds ratio (0.74, 95% CI 0.55-0.99) of receiving ECT. Our data suggest that ECT can be provided to homeless individuals at rates comparable to domiciled individuals. The psychosocial support typically required for an ECT course may prove difficult for homeless patients in the outpatient setting, which may be an area for further development.

Gender Differences in the Predictors of Suicide-related Morbidity Among Veterans Reporting Current Housing Instability

BACKGROUND

Veterans experiencing housing instability are at increased risk of suicide. Research is needed to identify gender differences in the predictors of both suicidal ideation and suicide attempt, particularly among Veterans who are unstably housed.

OBJECTIVES

The objective of the present study was to explore whether correlates of suicide-related morbidity among unstably housed Veterans vary by gender and identify implications for improved care for these Veterans.

METHODS

The study cohort included 86,325 Veterans who reported current housing instability between October 1, 2013, and September 30, 2016. This cross-sectional study assessed differences in demographic and outcome variables by gender using χ2 analyses and a series of multiple logistic regressions predicting suicidal ideation and suicide attempt, stratified by gender.

RESULTS

Among unstably housed female Veterans, being younger than 40 years was associated with more than double the odds of having an indicator of suicidal ideation and >12 times the odds of having an indicator of a suicide attempt. The effect sizes associated with age were much less pronounced among unstably housed male Veterans. The presence of mental health and substance use conditions as well as a positive screen for military sexual trauma were associated with increased risk of suicide morbidity among both women and men.

CONCLUSIONS

Intervention and prevention among unstably housed Veterans may be complicated by unpredictable living situations; further research should explore tailored interventions to address the complex needs of unstably housed Veterans and how suicide prevention can be woven throughout.

Preventing Suicide Among Homeless Veterans: A Consensus Statement by the Veterans Affairs Suicide Prevention Among Veterans Experiencing Homelessness Workgroup

Background:

Suicidal self-directed violence among Veterans experiencing homelessness remains a significant public health concern. To prevent suicide in this population, concerted clinical and research efforts remain necessary.

Objective:

This paper serves as a consensus statement by the recently-formed Department of Veterans Affairs (VA) Suicide Prevention among Veterans Experiencing Homelessness Workgroup. We provide a brief overview of current initiatives to prevent suicide among Veterans experiencing homelessness. We also discuss methods of studying this complex subset of the Veteran population, as well as future research endeavors necessary to inform gaps in understanding.

Conclusions:

Veterans experiencing homelessness are a complex subset of the Veteran population whose risk for suicide may be exacerbated by a number of factors (e.g., multimorbidity, rurality). While the VA has implemented a number of initiatives to prevent suicide among Veterans experiencing homelessness (e.g., universal screening for suicidal ideation and recent suicide attempts, Suicide Prevention Gatekeeper Training), there is a continued need to understand how best to tailor these initiatives to Veterans experiencing homelessness. Moreover, because Veterans experiencing homelessness often access a number of services within the community (e.g., community-based clinics, homeless shelters), collaboration between the VA and community is necessary.

Top 10 presenting diagnoses of homeless veterans seeking care at emergency departments

BACKGROUND

The health concerns that spur care-seeking in emergency departments (EDs) among homeless populations are not well described. The Veterans Affairs (VA) comprehensive healthcare system does not require health insurance and thus offers a unique window into ED service use by homeless veterans.

OBJECTIVE

This study examined the top 10 diagnostic categories for ED use among homeless and non-homeless veterans classified by age, gender, and race/ethnicity.

DESIGN

An observational study was conducted using national VA administrative data from 2016 to 2019.

PARTICIPANTS

Data on 260,783 homeless veterans and 2,295,704 non-homeless veterans were analyzed.

MAIN MEASURES

Homelessness was defined as a documented diagnostic code or use of any VA homeless program. Presenting diagnoses to the ED were grouped based on Clinical Classifications Software Refined (CCSR) categories endorsed by the Agency for Healthcare Research and Quality (AHRQ).

KEY RESULTS

The most common diagnostic categories for ED use among homeless veterans were, in order, musculoskeletal pain, alcohol-related disorders, suicidal behaviors, low back pain, and non-specified conditions, which together accounted for 22-24% of all ED visits. Among non-homeless veterans, alcohol-related disorders, suicidal behaviors, and depressive disorders did not number in the top 10 diagnostic categories for ED use. Some differences between homeless and non-homeless veterans presenting for ED care, such as age, gender, and race/ethnicity largely mirrored known epidemiological differences between these groups in general. But respiratory infections and symptoms were only in the top 10 for black veterans and depressive disorder was only in the top 10 for Hispanic veterans.

CONCLUSIONS

These data suggest that addressing psychosocial factors and optimizing healthcare for behavioral health and pain conditions among veterans experiencing homelessness has the potential to reduce emergency care-seeking.

Suicide Attempts and Homelessness: Timing of Attempts Among Recently Homeless, Past Homeless, and Never Homeless Adults

OBJECTIVE

Homelessness is associated with increased risk of suicide attempts. This study examined whether suicide attempts typically precede or occur during episodes of homelessness in a representative national sample.

METHODS

Data from 36,127 adults in the National Epidemiologic Survey on Alcohol and Related Conditions-III were used to identify 1,992 respondents who reported a lifetime suicide attempt. Bivariate analyses compared attempt histories between adults who reported past-year homelessness, homelessness prior to the past year, and no history of homelessness. Measures included years since most recent attempt and first attempt and proportion attempting suicide in the past year. Multivariable analyses adjusted for potentially confounding effects of age and identified independent factors associated with past-year attempts along with past-year homelessness.

RESULTS

Among respondents who experienced homelessness in the past year, 21.0% reported a past-year suicide attempt, compared with 5.8% among those experiencing homelessness prior to the past year and 6.3% of those who were never homeless. However, the most recent attempt among those with past-year homelessness occurred 8.4 years previously, on average-3.8 years and 4.5 years more recently than among those experiencing homelessness prior to the past year and those who were never homeless, after age adjustment. Overall, first suicide attempts occurred 19.9 years previously, on average, with no significant group differences after age adjustment.

CONCLUSIONS

Rates of past-year suicide attempts and past-year homelessness were strongly associated, suggesting that homelessness and suicidality strongly co-occur. However, among adults with recent homelessness and a suicide attempt history, suicidal behavior began decades ago and likely preceded homelessness.

Examination of potential disparities in suicide risk identification and follow-up care within the Veterans Health Administration

To improve the identification and intervention of suicide risk, the Veterans Health Administration implemented the use of electronic patient record flags (PRF) to indicate when a veteran is identified as high risk for suicide and to increase the clinical contacts made with the veteran. The current study utilized an intersectional approach to assess potential disparities in the likelihood of receiving a PRF and the likelihood of receiving post-PRF follow-up care among veterans with substance use disorders (SUDs). Among 458,092 veterans who received a SUD diagnosis in 2012, Black veterans were less likely to receive a PRF, although Black-disabled veterans and Black-female veterans were more likely to receive a PRF. Homelessness was related to greater likelihood of receiving a PRF and post-PRF care. Hispanic/Latinx veterans who experienced homelessness were more likely to receive post-PRF care, while disabled veterans who experienced homelessness were less likely. Hispanic/Latinx, female veterans, and Black-disabled veterans were significantly less likely to receive post-PRF care. Overall, few marginalized or intersecting identities were associated with decreased PRF or decreased follow-up care. There are opportunities for specific strategies that promote engagement in VA follow-up services for veterans identifying as Hispanic/Latinx women, disabled Black veterans, and disabled homeless veterans.

Intervention to address homelessness and all-cause and suicide mortality among unstably housed US Veterans, 2012-2016

BACKGROUND

People without stable housing-and Veterans specifically-are at increased risk of suicide. This study assessed whether unstably housed Veterans' participation in homeless services is associated with reduced risk of all-cause and suicide mortality.

METHODS

This retrospective cohort study used a sample of 169 221 Veterans across the US who self-reported housing instability between 1 October 2012 and 30 September 2016. Multivariable Cox regression models assessed the association between Veterans' utilisation of homeless services and all-cause and suicide mortality, adjusting for sociodemographics and severity of medical comorbidities.

RESULTS

More than one-half of unstably housed Veterans accessed homeless services during the observation period; utilisation of any homeless services was associated with a 6% reduction in hazards for all-cause mortality (adjusted HR[aHR]=0.94, 95% CI[CI]=0.90-0.98). An increasing number of homeless services used was associated with significantly reduced hazards of both all-cause (aHR=0.93, 95% CI=0.91-0.95) and suicide mortality (aHR=0.81, 95% CI=0.73-0.89).

CONCLUSIONS

The use of homeless services among Veterans reporting housing instability was significantly associated with reduced hazards of all-cause and suicide mortality. Addressing suicide prevention and homelessness together-and ensuring 'upstream' interventions-within the context of the VHA healthcare system holds promise for preventing suicide deaths among Veterans. Mental health treatment is critical for suicide prevention, but future research should investigate if social service programmes, by addressing unmet human needs, may also reduce suicide.

Posttraumatic Stress Disorder, Suicidal Ideation, and Suicidal Self-Directed Violence Among U.S. Military Personnel and Veterans: A Systematic Review of the Literature From 2010 to 2018

Rates of suicide and posttraumatic stress disorder remain high among United States military personnel and veterans. Building upon prior work, we conducted a systematic review of research published from 2010 to 2018 regarding: (1) the prevalence of suicidal ideation, suicide attempt, and suicide among United States military personnel and veterans diagnosed with posttraumatic stress disorder; (2) whether posttraumatic stress disorder was associated with suicidal ideation, suicide attempt, and suicide among United States military personnel and veterans. 2,106 titles and abstracts were screened, with 48 articles included. Overall risk of bias was generally high for studies on suicidal ideation or suicide attempt and low for studies on suicide. Across studies, rates of suicidal ideation, suicide attempt, and suicide widely varied based on study methodology and assessment approaches. Findings regarding the association between posttraumatic stress disorder diagnosis with suicidal ideation and suicide were generally mixed, and some studies reported that posttraumatic stress disorder was associated with lower risk for suicide. In contrast, most studies reported significant associations between posttraumatic stress disorder and suicide attempt. These findings suggest complex associations between posttraumatic stress disorder and suicidal ideation, suicide attempt, and suicide, which are likely influenced by other factors (e.g., psychiatric comorbidity). In addition, most samples were comprised of veterans, rather than military personnel. Further research is warranted to elucidate associations between posttraumatic stress disorder and suicidal ideation, suicide attempt, and suicide, including identification of moderators and mediators of this relationship. Addressing this among United States military personnel, by gender, and in relation to different trauma types is also necessary.

Differences in methods of suicide among veterans experiencing housing instability, 2013-2016

Although housing instability moderates suicide risk among military veterans, it is unknown whether suicide methods differ between stably and unstably housed veterans. The Veterans Health Administration screened 5,849,870 veterans for housing instability between October 1, 2012 and September 30, 2016. Death data were from the National Death Index. Unstably housed veterans had greater hazards of suicide mortality by jumping from a height (aHR = 3.07, 95%CI = 1.20-7.98) and unspecified means (aHR = 2.80, 95%CI = 1.63-4.80) than stably housed veterans. Translating these findings into optimal suicide prevention programming tailored to unstably housed veterans is essential.

Suicidality and the Onset of Homelessness: Evidence for a Temporal Association From VHA Treatment Records

OBJECTIVE

This study examined the temporal sequencing of a first-recorded episode of homelessness and treatment for suicidal ideation or attempt.

METHODS

Data were from the U.S. Department of Veterans Affairs Corporate Data Warehouse and contained medical records of service use dates and associated ICD codes for care provided by the Veterans Health Administration. The analysis examined treatment for suicidality before and after a first record of homelessness ("onset") among 152,519 veterans. The second analysis examined the rate of treatment for suicidality among 156,288 veterans with any indication of homelessness. The third analysis examined the rate of homelessness among 145,770 veterans with indication of suicidality.

RESULTS

Among newly homeless veterans, treatment for suicidality peaked just before onset of homelessness. Thirteen percent of homeless veterans had evidence of suicidality. Twenty-nine percent of veterans with evidence of suicidality appeared to have concurrent homelessness.

CONCLUSIONS

Homelessness should be considered a primary risk factor for suicidality.

Medical Records Flag for Suicide Risk: Predictors and Subsequent Use of Care Among Veterans With Substance Use Disorders

OBJECTIVE

The U.S. Department of Veterans Affairs (VA) health care system established policies to include patient record flags (PRFs) for high suicide risk in the electronic medical record to alert providers and to increase health care contacts. This study identified predictors of new PRFs and described health care utilization before and after PRF initiation among VA patients with substance use disorders.

METHODS

The sample included patients ages ≥18 who received a substance use disorder diagnosis in 2012 (N=474,946). Demographic, clinical, and utilization predictors of PRFs were identified by multivariable logistic regression. Changes in short-term (three months) and longer-term (12 months) health care utilization before and after PRF initiation were compared by negative binomial regression.

RESULTS

A total of 8,913 patients received PRFs. Demographic predictors of PRF initiation included being younger than 35, white, and homeless. Clinical predictors were cocaine, opioid, and sedative use disorders; posttraumatic stress, psychotic, bipolar, and depressive disorders; and diagnosis of a suicide attempt. Patients with PRFs averaged 1.33 (95% confidence interval [CI]=1.29-1.38) times more primary care visits, 2.29 (CI=2.24-2.34) times more mental health visits, 4.10 (CI=3.80-4.42) times more substance use visits, and fewer (incidence rate ratio=.55, CI=.53-.58) emergency department visits in the three months following compared with the three months before PRF initiation. Modest increases in mental health- and substance use--related days hospitalized were observed.

CONCLUSIONS

Veterans received significantly more health care services after PRF initiation. Further research is warranted on the effects of PRFs on clinical outcomes, such as suicide behaviors.

The Psychology of Health and Illness: The Mental Health and Physiological Effects of Intimate Partner Violence on Women

Violence against women is a global public health problem with about one in three women experiencing either physical and or sexual intimate partner violence during their lifetime. Globally as many as 38% of homicides committed against women are by a male intimate partner. Violence against women may have negative effects on their mental, physical, and reproductive health (WHO fact sheet, 2016). Untreated individuals who have experienced violence or life-threatening situations may develop posttraumatic stress disorder (PTSD). This disorder has the potential to be life-changing and cause negative psychological and medical issues (Rokach, Ahmed, & Patel, 2017). This potentially life-changing nature and consequence of violence affecting women world-wide deserves greater attention to ensure elimination of risk factors, financial support of investigational studies to promote detection of victims, and research to increase therapeutic efficacy of remediation. These efforts should be bolstered by all physicians, mental health experts, social service specialists, and public health advocates.