Risk Factors, Methods, and Timing of Suicide Attempts Among US Army Soldiers

NLP-enriched social determinants of health improve prediction of suicide death among the Veterans

Predictions of suicide death of patients discharged from psychiatric hospitals (PDPH) can guide intervention efforts including intensive post-discharge case management programs, designed to reduce suicide risk among high-risk patients. This study aims to determine if additions of social and behavioral determinants of health (SBDH) as predictors could improve the prediction of suicide death of PDPH. We analyzed a cohort of 197,581 US Veterans discharged from 129 VHA psychiatric hospitals across the US between January 1, 2017, and July 1, 2019 with a total of 414,043 discharges. Predictive variables included administrative data and SBDH, the latter derived from unstructured clinical notes via a natural language processing (NLP) system and ICD codes, observed within a 365-day window prior to discharge. We evaluated the impact of SBDH on the predictive performance of two advanced models: an ensemble of traditional machine learning models and a transformer-based deep learning foundation model for electronic health records (TransformEHR). We measured sensitivity, positive predictive value (PPV), and area under the receiver operating characteristic curve (AUROC) overall and by gender. Calibration analysis was also conducted to measure model reliability. TransformEHR with SBDH achieved AUROC of 64.04. Specifically, ICD-based SBDH improved AUROC by 3.1% (95% CI, 1.6% - 4.5%) for the ensemble model and by 2.9% (95% CI, 0.5% - 5.4%) for TransformEHR, compared to models without SBDH. NLP-extracted SBDH further improved the AUROC: 1.7% (95% CI, 0.1%- 3.3%) for ensemble model and 1.8% (95% CI, 0.6%- 2.9%) for TransformEHR. TransformEHR achieved 0.2%, 0.4%, 0.8%, 1.6% PPV per 100 PDPH 7, 30, 90, 180 respectively. Moreover, TransformEHR showed superior calibration and fairness compared to ensemble model, with SBDH further improving fairness across both predictive models. In conclusion, both ICD-based SBDH and NLP-extracted SBDH improved the performance, calibration, and model fairness of prediction of suicide death for Veterans after their psychiatric discharge.

An overview of the literature on assistance dogs using text mining and topic analysis

It is said that dogs are human's best friend. On occasion, dogs can be raised and trained to provide additional specific benefits to humans suffering from a range of physical or mental conditions, working as assistance dogs. In this article, we employed innovative techniques to review the vast and constantly expanding literature on the subject, which covers a multitude of aspects. The 450 articles obtained through keyword search on Scopus were initially described in terms of year of publication, geographical context and publication destination, and were subsequently analysed through automated text mining to detect the most important words contained within them. Lastly, a generative model of topic analysis (Latent Dirichlet Allocation-LDA) described the content of the collection of documents, dividing it into the appropriate number of topics. The results yielded interesting insights across all domains, demonstrating the potential of automated text mining and topic analysis as a useful tool to support the researchers in dealing with complex and time-consuming subjects' reviews, integrating the work done with traditional reviewing methods.

Identifying Suicide-Related Predictors Using Overseas Airborne Infantry Brigade Serious Incident Reports

INTRODUCTION

Suicidal ideation and attempts are considered to be graduated risks for suicide, yet they remain under studied. Suicide is among the leading causes of death in the U.S. for all individuals between the ages of 10 and 64 years. Suicide is a critical problem in the U.S. Military. The U.S. Army suicide rates surpassed civilian rates in 2008 and continue to climb steadily; with U.S. Army soldiers at more than twice the risk than U.S. civilians, and enlisted personnel at more than twice the risk of officers. Suicidal ideation and attempts are routinely reported within U.S. Army brigades using suicide-related serious incident reports (SR-SIRs). These reports could form a useful source of information for prevention planning, but to date there have been no efforts to summary these reports. This paper analyzes SR-SIRs among enlisted personnel for a 4-year period for 1 Army brigade, to test the usefulness of this information and to explore whether risk factors for attempts compared to ideation can be identified.

MATERIALS AND METHODS

This report analyzes 130 de-identified reports of suicidal ideation (n = 102) and suicide attempts (n = 28) reported as SR-SIRs from August 2018 to June 2022 among enlisted personnel in an airborne infantry brigade combat team (BCT) outside the continental U.S. Analysis of de-identified data was not considered research by brigade and university human subject/IRB authorities. Fourteen soldier characteristics and context factors were examined to determine if they differentiate the two types of incidents, suicidal ideations and suicide attempts.

RESULTS

Unit location and alcohol use at the time of the incident were strongly associated with suicide attempts compared to ideation. Attempts occurred disproportionately during off duty hours, and attempters were more likely to have had prior contact with behavioral health services than ideators; however, these differences did not attain conventional statistical significance.

CONCLUSIONS

The study can help inform unit-specific suicide prevention and intervention strategies. Off duty hours and alcohol use are risk factors for attempts, particularly among soldiers who have sought behavioral health care. Plans to engage and support soldiers who have sought behavioral health care during off duty hours, and information regarding the risks of alcohol use, could meaningfully reduce their risk. This is the first known attempt to examine active duty U.S. Army brigade combat team SR-SIRs, and they are a potentially valuable source of health and mental health-related information.

Suicide in Military and Veteran Populations: A View Across the Five Eyes Nations

OBJECTIVE

This commentary highlights challenges and opportunities in suicide prevention across the military and veteran populations of the Five Eyes nations.

METHODS

Trends in suicides and suicidality in military and veteran populations are outlined, as well as identified risk and protective factors, and approaches to suicide prevention.

RESULTS

Suicide risk is higher in veterans compared to current serving and community samples. Despite extensive research, the causation, prediction, and prevention of suicide, is still not well understood. We propose areas for further attention in prevention strategies.

CONCLUSION

Suicide and suicidality are issues of concern in military and veteran populations. Suicide prevention requires commitment to continuous improvement through research, analysis, and incorporation of evolving best practice.

Durability of deep transcranial magnetic stimulation for veterans with treatment resistant depression with comorbid suicide risk and PTSD symptoms

Evidence supports transcranial magnetic stimulation (TMS) as an effective treatment for symptoms of depression and PTSD; however, there has been limited investigation into the durability of symptoms reduction. The Hampton Veterans Affairs Medical Center's (HVAMC) rTMS clinic used H-coil for dTMS for Veterans with treatment-resistant depression and tracked symptomology at multiple times points up to six months post-treatment. Veterans underwent 30 session of dTMS treatment using the Hesed coil (H1 coil). The PHQ-9, PCL-5, and BSS were administered to Veterans at four time points: pretreatment, post-treatment, three months after treatment, and six months after treatment. In aggregate, there were clinically significant reductions in symptoms of depression (43.47%), PTSD (44.14%) and suicidal ideation (54.02%) at the six month follow-up relative to pretreatment. Results provide evidence of the impact and durability of dTMS on symptoms of MDD, PTSD, and suicidal ideation among Veterans with treatment-resistant depression.

Suicidal Behaviors Among Active-Duty US Service Members: Data from the 2018 Health-Related Behaviors Survey

Background

This study aimed to 1) determine the prevalence of past-year suicidal ideation (SI) and attempts (SA) among active-duty SMs; 2) determine whether differences exist by age, sex, and race; and 3) assess whether prevalence estimates vary by risk profiles of mental health conditions and substance use.

Methods

Data were from the 2018 Health-Related Behavior Survey (HRBS), a cross-sectional survey of active-duty SMs (n = 17,166). We used the logistic model to identify the factors of SI and SA and latent class analysis (LCA) to identify the risk profiles.

Results

Among active duty SMs, 8.26% had SI and 1.25% had SA in the past year. Gender and age have been shown to influence how race might contribute to suicidal behaviors. Mental health conditions were associated with higher odds of SI and SA, as were younger ages; LGB identity; being separated, divorced, or widowed; use of e-cigarettes, dual use of e-cigarettes and cigarettes, or drugs; and history of deployment of less than 12 months. Frequencies of cigarette and e-cigarette use were also associated with SI and SA, indicating the odds were increasing by 0.3% for every additional cigarette or e-cigarette used. Five risk profiles were identified: class 1 (illegal drug use), class 2 (mental health needs with tobacco and alcohol use), class 3 (mental health conditions only), class 4 ("low risk" SMs with low levels of illegal drug use, mental health visits, tobacco use, and alcohol use), and class 5 (alcohol use). Compared to class 4 ("low risk"), all other risk profiles were associated with increased odds of suicidal behaviors.

Conclusion

Despite the resources and increased access provided for mental health support, the prevalence of SI among active-duty SMs is greater than in the general population of the same age, likely due to additional military exposures and stressors.

Predictors of suicide attempt within 30 days of first medically documented major depression diagnosis in U.S. army soldiers with no prior suicidal ideation

BACKGROUND

Understanding mental health predictors of imminent suicide attempt (SA; within 30 days) among soldiers with depression and no prior suicide ideation (SI) can inform prevention and treatment. The current study aimed to identify sociodemographic and service-related characteristics and mental disorder predictors associated with imminent SA among U.S. Army soldiers following first documented major depression diagnosis (MDD) with no history of SI.

METHODS

In this case-control study using Army Study to Assess Risk and Resilience in Servicemembers (STARRS) administrative data, we identified 101,046 active-duty Regular Army enlisted soldiers (2010-2016) with medically-documented MDD and no prior SI (MDD/No-SI). We examined risk factors for SA within 30 days of first MDD/No-SI using logistic regression analyses, including socio-demographic/service-related characteristics and psychiatric diagnoses.

RESULTS

The 101,046 soldiers with documented MDD/No-SI were primarily male (78.0%), < 29 years old (63.9%), White (58.1%), high school-educated (74.5%), currently married (62.0%) and < 21 when first entering the Army (56.9%). Among soldiers with MDD/No-SI, 2,600 (2.6%) subsequently attempted suicide, 16.2% (n = 421) within 30 days (rate: 416.6/100,000). Our final multivariable model identified: Soldiers with less than high school education (χ²₃ = 11.21, OR = 1.5[95%CI = 1.2-1.9]); combat medics (χ²₂ = 8.95, OR = 1.5[95%CI = 1.1-2.2]); bipolar disorder (OR = 3.1[95%CI = 1.5-6.3]), traumatic stress (i.e., acute reaction to stress/not PTSD; OR = 2.6[95%CI = 1.4-4.8]), and "other" diagnosis (e.g., unspecified mental disorder: OR = 5.5[95%CI = 3.8-8.0]) diagnosed same day as MDD; and those with alcohol use disorder (OR = 1.4[95%CI = 1.0-1.8]) and somatoform/dissociative disorders (OR = 1.7[95%CI = 1.0-2.8]) diagnosed before MDD were more likely to attempt suicide within 30 days. Currently married soldiers (χ²₂ = 6.68, OR = 0.7[95%CI = 0.6-0.9]), those in service 10 + years (χ²₃ = 10.06, OR = 0.4[95%CI = 0.2-0.7]), and a sleep disorder diagnosed same day as MDD (OR = 0.3[95%CI = 0.1-0.9]) were less likely.

CONCLUSIONS

SA risk within 30 days following first MDD is more likely among soldiers with less education, combat medics, and bipolar disorder, traumatic stress, and "other" disorder the same day as MDD, and alcohol use disorder and somatoform/dissociative disorders before MDD. These factors identify imminent SA risk and can be indicators for early intervention.

Prospective Association of Unmet Mental Health Treatment Needs With Suicidal Behavior Among Combat-Deployed Soldiers

OBJECTIVE

Military personnel frequently report discontinuing or not pursuing psychiatric treatment despite perceiving a need for services. This study aimed to examine how unmet need for treatment or support among U.S. Army soldiers relates to future suicidal ideation (SI) or suicide attempt (SA).

METHODS

Mental health treatment need and help seeking in the past 12 months were evaluated for soldiers (N=4,645) who subsequently deployed to Afghanistan. Weighted logistic regression models were used to examine the prospective association of predeployment treatment needs with SI and SA during and after deployment, with adjustment for potential confounders.

RESULTS

Compared with soldiers without predeployment treatment needs, those who reported not seeking help despite needing it had increased risk for SI during deployment (adjusted OR [AOR]=1.73), past-30-day SI at 2-3 months postdeployment (AOR=2.08), past-30-day SI at 8-9 months postdeployment (AOR=2.01), and SA through 8-9 months postdeployment (AOR=3.65). Soldiers who sought help and stopped treatment without improvement had elevated SI risk at 2-3 months postdeployment (AOR=2.35). Those who sought help and stopped after improving did not have increased SI risk during or 2-3 months after deployment but had elevated risks for SI (AOR=1.71) and SA (AOR=3.43) by 8-9 months postdeployment. Risks for all suicidality outcomes were also elevated among soldiers who reported receiving ongoing treatment before deployment.

CONCLUSIONS

Unmet or ongoing needs for mental health treatment or support before deployment are associated with increased risk for suicidal behavior during and after deployment. Detecting and addressing treatment needs among soldiers before deployment may help prevent suicidality during deployment and reintegration periods.

A bidirectional examination of mental health symptoms and perceptions of leader support: Which comes first?

Leader support for psychological health (LSPH) has been identified as an important factor in the prediction of mental health symptoms among warfighters. Although research has examined the relationship between LSPH and mental health symptoms, the extent to which this relationship is bidirectional has been underexplored. Consequently, the present study examined the longitudinal relationships between perceived LSPH and mental health symptoms (depression and PTSD) among military personnel over a 5-month period. We found that perceived LSPH at Time 1 (T1) was associated with fewer mental health symptoms at Time 2 (T2); however, mental health symptoms at T1 were also associated with lower perceptions of LSPH at T2. The results differed slightly based on the type of symptoms experienced, but the relationships between perceived LSPH and symptoms did not vary based on whether soldiers had been exposed to combat. However, it is important to note that the overall sample had low combat experience. Despite this, these findings may suggest that the assumption that leader support can enhance soldier mental health may fail to consider that the symptoms themselves may also affect how leaders are perceived. Therefore, organizations such as the military should consider both directions to optimally understand the relationship between leaders and subordinate mental health.

Suicide attempts and mental health diagnoses in combat-injured service members: A retrospective cohort study

INTRODUCTION

Examinations of risk factors for suicide attempt in United States service members at high risk of mental health diagnoses, such as those with combat injuries, are essential to guiding prevention and intervention efforts.

METHODS

Retrospective cohort study of 8727 combat-injured patients matched to deployed, non-injured patients utilizing Department of Defense and Veterans Affairs administrative records.

RESULTS

Combat injury was positively associated with suicide attempt in the univariate model (HR = 1.75, 95% CI 1.5-2.1), but lost significance after adjustment for mental health diagnoses. Utilizing Latent Transition Analysis in the combat-injured group, we identified five mental/behavioral health profiles: (1) Few mental health diagnoses, (2) PTSD and depressive disorders, (3) Adjustment disorder, (4) Multiple mental health comorbidities, and (5) Multiple mental health comorbidities with alcohol use disorder (AUD). Multiple mental health comorbidities with AUD had the highest suicide attempt rate throughout the study and more than four times that of Multiple mental health comorbidities in the first study year (23.4 vs. 5.1 per 1000 person years, respectively).

CONCLUSION

Findings indicate that (1) combat injury's impact on suicide attempt is attenuated by mental health and (2) AUD with multiple mental health comorbidities confers heightened suicide attempt risk in combat-injured service members.

Association of Premilitary Mental Health With Suicide Attempts During US Army Service

IMPORTANCE

Approximately one-third of US soldiers who attempt suicide have not received a mental health diagnosis (MH-Dx) before their suicide attempt (SA), yet little is known about risk factors for SA in those with no MH-Dx.

OBJECTIVE

To examine whether premilitary mental health is associated with medically documented SA among US Army soldiers who do not receive an MH-Dx before their SA.

DESIGN, SETTING, AND PARTICIPANTS

This cohort study used data from a representative survey of soldiers in the US Army entering basic combat training from April 1, 2011, to November 30, 2012, who were followed up via administrative records for the first 48 months of service. Analyses were conducted from April 5, 2021, to January 21, 2022. Regular Army enlisted soldiers (n = 21 772) recruited from 3 US Army installations during the first week of service who agreed to have their administrative records linked to their survey responses were included.

EXPOSURES

Preenlistment lifetime history of mental disorder, suicide ideation, SA, and nonsuicidal self-injury (NSSI) as reported during the baseline survey. Service-acquired MH-Dx and sociodemographic and service-related variables were identified using administrative records.

MAIN OUTCOMES AND MEASURES

Documented SAs were identified using administrative medical records. Using a discrete-time survival framework, linear splines examined the pattern of SA risk over the first 48 months of service. Logistic regression analysis examined associations of lifetime baseline survey variables with subsequent, medically documented SA among soldiers who did vs did not receive an MH-Dx during service. Models were adjusted for time in service and sociodemographic and service-related variables.

RESULTS

Of the 21 722 respondents (86.2% male, 20.4% Black, 61.8% White non-Hispanic), 253 made an SA in the first 48 months of service (male [75.4%]; Black [22.7%], White non-Hispanic [59.9%], or other race or ethnicity [17.4%]). Risk of SA peaked toward the end of the first year of service for both those who did and did not receive an MH-Dx during service. Of the 42.3% of individuals reporting at least 1 of the 4 baseline risk factors, 50.2% received an administrative MH-Dx during service vs 41.5% of those with none, and 1.6% had a documented SA vs 1.0% of those with none. Among individuals with no MH-Dx, medically documented SAs were associated with suicide ideation (odds ratio [OR], 2.2; 95% CI, 1.1-4.4), SA (OR, 11.3; 95% CI, 4.3-29.2), and NSSI (OR, 3.0; 95% CI, 1.3-6.8). For those who received an MH-Dx, medically documented SAs were associated with mental disorder (OR, 1.4; 95% CI, 1.0-1.9), SA (OR, 3.4; 95% CI, 2.1-5.6), and NSSI (OR, 1.8; 95% CI, 1.1-2.8). Interactions indicated the only explanatory variable that differed based on history of MH-Dx was preenlistment SA (χ21 = 4.7; P = .03), which had a larger OR among soldiers with no MH-Dx than among those with an MH-Dx.

CONCLUSIONS AND RELEVANCE

In this study, the period of greatest SA risk and baseline risk factors for SA were similar in soldiers with and without an MH-Dx. This finding suggests that knowledge of the time course and preenlistment mental health factors can equally aid in identifying SA risk in soldiers who do and do not receive an MH-Dx.

Spinal pain and major depression in a military cohort: bias analysis of dependent misclassification in electronic medical records

BACKGROUND

Spinal pain and major depression are prevalent conditions in adult populations and are particularly impactful in the military. However, the temporal relationship between these two conditions remains poorly understood.

METHODS

Using data extracted from electronic medical records, we assessed the association between incident diagnoses of spinal pain and major depression in a cohort of 48,007 Canadian Armed Forces personnel followed from January 2017 to August 2018. We used multivariate Poisson regression to measure the association between the period prevalence of these two conditions. We used probabilistic bias modelling to correct our estimates for misclassification of spinal pain and major depression.

RESULTS

After correcting for misclassification with probabilistic bias modelling, subjects newly diagnosed with spinal pain during the study period were 1.41 times (95% interval 1.25, 1.59) more likely also to be diagnosed with incident major depression, and personnel newly diagnosed with major depression were 1.28 times (95% interval 1.17, 1.39) more likely also to be diagnosed with spinal pain, compared to undiagnosed counterparts of the same age and sex. Without bias corrections, we would have overestimated the magnitude of the association between major depression and spinal pain by a factor of approximately 2.0.

CONCLUSION

Our results highlight a moderate and bi-directional association between two of the most prevalent disorders in military populations. Our results also highlight the importance of correcting for misclassification in electronic medical record data research.

Costs, benefits, and cost-benefit of Collaborative Assessment and Management of Suicidality versus enhanced treatment as usual

Suicide rates have been steadily increasing in both the U.S. general population and military, with significant psychological and economic consequences. The purpose of the current study was to examine the economic costs and cost-benefit of the suicide-focused Collaborative Assessment and Management of Suicidality (CAMS) intervention versus enhanced treatment as usual (ETAU) in an active duty military sample using data from a recent randomized controlled trial of CAMS versus ETAU. The full intent-to-treat sample included 148 participants (mean age 26.8 years ± 5.9 SD years, 80% male, 53% White). Using a micro-costing approach, the cost of each condition was calculated at the individual level from a healthcare system perspective. Benefits were estimated at the individual level as cost savings in past-year healthcare expenditures based on direct care reimbursement rates. Cost-benefit was examined in the form of cost-benefit ratios and net benefit. Total costs, benefits, cost-benefit ratios, and net benefit were calculated and analyzed using general linear mixed modeling on multiply imputed datasets. Results indicated that treatment costs did not differ significantly between conditions; however, CAMS was found to produce significantly greater benefit in the form of decreased healthcare expenditures at 6-month follow-up. CAMS also demonstrated significantly greater cost-benefit ratios (i.e., benefit per dollar spent on treatment) and net-benefit (i.e., total benefit less the cost of treatment) at 12-month follow-up. The current study suggests that beyond its clinical effectiveness, CAMS may also convey potential economic advantages over usual care for the treatment of suicidal active duty service members. Our findings demonstrate cost savings in the form of reduced healthcare expenditures, which theoretically represent resources that can be reallocated toward other healthcare system needs, and thus lend support toward the overall value of CAMS.

Risk of suicide attempt in reserve versus active component soldiers during deployment to the wars in Iraq and Afghanistan

INTRODUCTION

Little is known about the degree to which U.S. Army soldiers in the Reserve Components (Army National Guard and Army Reserve) and Active Component (Regular Army) differ with respect suicide attempt (SA) risk during high-stress times, such as deployment.

METHOD

Using administrative person-month records of enlisted soldiers on active duty during 2004-2009, we identified 1170 soldiers with a medically documented SA during deployment and an equal-probability control sample of other deployed soldiers (n = 52,828 person-months). Logistic regression analyses examined the association of Army component (Guard/Reserve vs. Regular) with SA before and after adjusting for socio-demographic and service-related predictors.

RESULTS

Guard/Reserve comprised 32.1% of enlisted soldiers and 19.7% of suicide attempters in-theater, with a SA rate of 81/100,000 person-years (vs. 157/100,000 person-years among Regular; rate ratio = 0.5 [95% CI = 0.5-0.6]). Risk peaked near mid-deployment for both groups but was consistently lower for Guard/Reserve throughout deployment. Guard/Reserve had lower odds of SA after adjusting for covariates (OR = 0.7 [95%CI = 0.6-0.8]). Predictors of SA were similar between components.

CONCLUSIONS

Guard/Reserve and Regular soldiers had similar patterns and predictors of SA during deployment, but Guard/Reserve had lower risk even after controlling for important risk factors. Additional research is needed to understand the lower SA risk among Guard/Reserve in-theater.

Association between neurocognitive functioning and suicide attempts in U.S. Army Soldiers

BACKGROUND

Suicide is a serious public health problem, including among U.S. Army personnel. There is great interest in discovering objective predictors of suicide and non-fatal suicidal behaviors. The current study examined the association between neurocognitive functioning and pre-military history of suicide attempts (SA) and post-enlistment onset of SA.

METHODS

New Soldiers reporting for Basic Combat Training (N = 38,507) completed a comprehensive computerized neurocognitive assessment battery and self-report questionnaires. A subset of Soldiers (n = 6216) completed a follow-up survey, including assessment of lifetime SA, 3-7 years later.

RESULTS

Six hundred eighty-nine Soldiers indicated lifetime SA at baseline and 210 Soldiers indicated new-onset SA at follow-up. Regression analyses, adjusted for demographic variables, revealed significant bivariate associations between neurocognitive performance on measures of sustained attention, impulsivity, working memory, and emotion recognition and lifetime SA at baseline. In a multivariable model including each of these measures as predictors, poorer impulse control and quicker response times on an emotion recognition measure were significantly and independently associated with increased odds of lifetime SA. A second model predicted new-onset SA at follow-up for Soldiers who did not indicate a history of SA at baseline. Poorer impulse control on a measure of sustained attention was predictive of new-onset SA.

LIMITATIONS

Effect sizes are small and of unlikely clinical predictive utility.

CONCLUSIONS

We simultaneously examined multiple neurocognitive domains as predictors of SA in a large, representative sample of new Army Soldiers. Impulsivity most strongly predicted past and future SA over and beyond other implicated cognitive-emotional domains.

Suicide preceded by health services contact - A whole-of-population study in New Zealand 2013-2015

New Zealand’s rate of suicide persistently exceeds the global average. The burden of suicide in New Zealand is disproportionately borne by youth, males and Māori (NZ indigenous people). While the demographic characteristics of suicide decedents are established, there is a need to identify potential points of contact with health services where preventative action could take place. This paper aims to determine if suicide deaths in New Zealand were likely to be preceded by contact with health services, and the type and time frame in which these contacts took place. This study utilised a whole-of-population-cohort of all individuals age 15 years and over, who were alive on March 5^th 2013, followed up to December 2015. Associations between the odds of suicide, demographic factors, area-based deprivation, and the timing of last contact with primary, secondary, and tertiary services were analysed using univariate and multivariate logistic regression. Contact with a health service in the 6 Months prior to death was associated with the highest odds of suicide. Over half of the suicide decedent population (59.4%) had contacted primary health services during this period. Large proportions of the suicide decedent population contacted secondary and tertiary services in the 6 Months prior to death, 46.5% and 30.4% respectively. Contact with primary, secondary and tertiary services in the prior 6 Months, were associated with an increased odds of suicide of 2.51 times [95% CI 2.19–2.88], 4.45 times [95% CI 3.69–4.66] and 6.57 times [95% CI 5.84–7.38], respectively, compared to those who had no health services contact.

Impact of intensive treatment programs for posttraumatic stress disorder on suicidal ideation in veterans and service members

Intensive treatment programs (ITPs) are treating veterans with posttraumatic stress disorder (PTSD) and suicidal ideation (SI). The reduction of SI is a target to the abatement of suicide risk. This study examined whether ITPs utilizing PTSD treatments reduce SI and whether SI reduction is associated with PTSD symptom improvement. Veterans (N = 684) enrolled in a 2-week Prolonged Exposure (PE)-ITP or a 3-week Cognitive Processing Therapy (CPT)-ITP. Study data were drawn from self-report measures [PTSD Checklist for DSM-5 (PCL-5); item 9 of the Patient Health Questionnaire-9 (PHQ-9)] administered at intake and throughout treatment. The ITPs produced large treatment effects for PTSD. SI scores also decreased over time. Lower PTSD symptom severity was associated with less severe SI in both the PE-ITP and CPT-ITP. In conclusion, both PE- and CPT-ITPs effectively treat PTSD and reduce SI among veterans in as little as 2 weeks of intensive PTSD treatment. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Predictors of Suicide Attempt Within 30 Days After First Medically Documented Suicidal Ideation in U.S. Army Soldiers

OBJECTIVE

The authors sought to identify predictors of imminent suicide attempt (within 30 days) among U.S. Army soldiers following their first documented suicidal ideation.

METHODS

Using administrative data from the Army Study to Assess Risk and Resilience in Servicemembers, the authors identified 11,178 active-duty Regular Army enlisted soldiers (2006-2009) with medically documented suicidal ideation and no prior medically documented suicide attempts. The authors examined risk factors for suicide attempt within 30 days of first suicidal ideation using logistic regression analyses, including sociodemographic and service-related characteristics, psychiatric diagnoses, physical health care visits, injuries, and history of family violence or crime perpetration or victimization.

RESULTS

Among soldiers with first documented suicidal ideation, 830 (7.4%) attempted suicide, 46.3% of whom (N=387) attempted suicide within 30 days (rate, 35.4 per 1,000 soldiers). Following a series of multivariate analyses, the final model identified females (odds ratio=1.3, 95% CI=1.0, 1.8), combat medics (odds ratio=1.6, 95% CI=1.1, 2.2), individuals with an anxiety disorder diagnosis prior to suicidal ideation (odds ratio=1.3, 95% CI=1.0, 1.6), and those who received a sleep disorder diagnosis on the same day as the recorded suicidal ideation (odds ratio=2.3, 95% CI=1.1, 4.6) as being more likely to attempt suicide within 30 days. Black soldiers (odds ratio=0.6, 95% CI=0.4, 0.9) and those who received an anxiety disorder diagnosis on the same day as suicidal ideation (odds ratio=0.7, 95% CI=0.5, 0.9) were less likely.

CONCLUSIONS

Suicide attempt risk is highest in the first 30 days following ideation diagnosis and is more likely among women, combat medics, and soldiers with an anxiety disorder diagnosis before suicidal ideation and a same-day sleep disorder diagnosis. Black soldiers and those with a same-day anxiety disorder diagnosis were at decreased risk. These factors may help identify soldiers at imminent risk of suicide attempt.

Women's Mental Health in the U.S. Military - Where Are We Now? A Review of Recent Research

PURPOSE OF REVIEW

The field of women's mental health has grown in the military healthcare system, which has begun to acknowledge and address the sex-specific differences in mental health for service women. The purpose of this review is to examine recent research in active duty populations addressing perinatal mental health, post-traumatic stress disorder (PTSD), depression, and gender isolation.

RECENT FINDINGS

Within the examined literature focused on active duty populations, analyses by sex and gender continue to exist as notable gaps, and a majority of studies reviewed either do not aim to examine sex or gender-based differences, and/or do not analyze data with an eye towards these paradigms. Within perinatal mental health, the lack of studies led to an inability to make any notable conclusions. PTSD was the area with the most robust publications focused on active duty women, studies of major depression showed significant occupational impact, and the area of gender isolation continues to grow as a promising field with practical implications. We discuss current promising research and advance ideas for future research trajectories that will provide clinicians, policy makers, and scientists with more data to support improved mental healthcare for both military women and men.

Associations of Lifetime Traumatic Brain Injury Characteristics With Prospective Suicide Attempt Among Deployed US Army Soldiers

OBJECTIVE

To estimate associations of lifetime traumatic brain injury (TBI) characteristics with prospective suicide attempt among US Army soldiers.

METHOD

The Army STARRS (Study to Assess Risk and Resilience in Servicemembers) Pre/Post Deployment Study surveyed 3 Brigade Combat Teams that were deployed to Afghanistan in 2012. Lifetime TBI and past-month postconcussive/post-TBI symptoms were evaluated at predeployment baseline. Recency and number of TBIs were quantified, and TBI severity was classified on the basis of reports of alteration/loss of consciousness and memory lapse. Suicide attempt data came from administrative records and surveys administered after return from deployment. Logistic regression models estimated associations of TBI characteristics with prospective suicide attempt among baseline respondents who were deployed (n = 7677), adjusting for other risk factors including lifetime mental disorder.

RESULTS

One hundred three soldiers made a suicide attempt over a median follow-up period of 30 months (weighted prevalence = 1.31% [0.14%]). In the final model estimating joint associations of TBI severity/recency and past-month postconcussive/post-TBI symptoms, only postconcussive/post-TBI symptoms were associated with a higher risk of suicide attempt (per standard score increase: AOR [adjusted odds ratio] = 1.31; 95% CI, 1.05-1.63; P = .012).

CONCLUSIONS

Among the lifetime TBI characteristics evaluated at predeployment baseline, only past-month postconcussive/post-TBI symptoms were prospectively associated with an increased risk of suicide attempt following deployment. Detection of postconcussive/post-TBI symptoms could facilitate targeting of Army suicide prevention programs.

Suicide and suicidality in contemporary serving and ex-serving Australian Defence Force personnel

OBJECTIVE

The risk of suicide in contemporary serving and ex-serving Australian Defence Force personnel is an area of significant concern, driving government-directed inquiries, community campaigns and most recently, the establishment of a permanent National Commissioner for Defence and Veteran Suicide Prevention. This concern is mirrored in international militaries and despite investment in prevention programmes, suicide is a leading cause of death in military populations. This review seeks to summarise recent findings from Australian research regarding the magnitude and factors associated with suicide and suicidality in contemporary serving and ex-serving Australian Defence Force populations and discusses research findings, implications and future opportunities.

METHODS

Initial review of the prevalence of suicide and suicidality in the general community and military populations is presented, followed by review of recent research findings pertaining to suicides and suicidal thoughts, plans and attempts in contemporary serving and ex-serving Australian Defence Force personnel. Key findings are presented from the 2010 Australian Defence Force Mental Health and Wellbeing Prevalence Study and the 2015 Transition and Wellbeing Research Programme.

RESULTS

Differences between serving and ex-serving Australian Defence Force cohorts were observed, with rates of completed suicide in ex-serving Australian Defence Force males more than double that of serving Australian Defence Force males, and increased risk for suicidality observed among those who had recently transitioned out of full-time Australian Defence Force service. Risk for increased suicidality and completed suicide is particularly evident for younger males of lower ranks, and those who have been medically discharged.

CONCLUSIONS

The findings provide insight into career phases and groups that should be followed-up and targeted for prevention and early intervention programmes, including prior to and several years following transition out of full-time military service. Further research to better understand the factors that influence those who develop suicidal ideation, and those who progress to plans and attempts, will inform a more sophisticated approach to suicide prevention programmes.

Association of Combat Experiences With Suicide Attempts Among Active-Duty US Service Members

Importance

There is uncertainty about the role that military deployment experiences play in suicide-related outcomes. Most previous research has defined combat experiences broadly, and a limited number of cross-sectional studies have examined the association between specific combat exposure (eg, killing) and suicide-related outcomes.

Objective

To prospectively examine combat exposures associated with suicide attempts among active-duty US service members while accounting for demographic, military-specific, and mental health factors.

Design, Setting, and Participants

This cohort study analyzed data from the Millennium Cohort Study, an ongoing prospective longitudinal study of US service members from all military branches. Participants were enrolled in 4 phases from July 1, 2001, to April 4, 2013, and completed a self-administered survey at enrollment and every 3 to 5 years thereafter. The population for the present study was restricted to active-duty service members from the first 4 enrollment phases who deployed in support of the wars in Iraq and Afghanistan. Questionnaire data were linked with medical encounter data through September 30, 2015. Data analyses were conducted from January 10, 2017, to December 14, 2020.

Exposures

Combat exposure was examined in 3 ways (any combat experience, overall combat severity, and 13 individual combat experiences) using a 13-item self-reported combat measure.

Main Outcomes and Measures

Suicide attempts were identified from military electronic hospitalization and ambulatory medical encounter data using the International Classification of Diseases, Ninth Revision codes.

Results

Among 57 841 participants, 44 062 were men (76.2%) and 42 095 were non-Hispanic White individuals (72.8%), and the mean (SD) age was 26.9 (5.3) years. During a mean (SD) follow-up period of 5.6 (4.0) years, 235 participants had a suicide attempt (0.4%). Combat exposure, defined broadly, was not associated with suicide attempts in Cox proportional hazards time-to-event regression models after adjustments for demographic and military-specific factors; high combat severity and certain individual combat experiences were associated with an increased risk for suicide attempts. However, these associations were mostly accounted for by mental disorders, especially posttraumatic stress disorder. After adjustment for mental disorders, combat experiences with significant association with suicide attempts included being attacked or ambushed (hazard ratio [HR], 1.55; 95% CI, 1.16-2.06), seeing dead bodies or human remains (HR, 1.34; 95% CI, 1.01-1.78), and being directly responsible for the death of a noncombatant (HR, 1.81; 95% CI, 1.04-3.16).

Conclusions and Relevance

This study suggests that deployed service members who experience high levels of combat or are exposed to certain types of combat experiences (involving unexpected events or those that challenge moral or ethical norms) may be at an increased risk of a suicide attempt, either directly or mediated through a mental disorder.

Sex Differences in US Army Suicide Attempts During the Wars in Iraq and Afghanistan

OBJECTIVE

To examine sex differences in risk for administratively documented suicide attempt (SA) among US Army soldiers during the Iraq/Afghanistan wars.

METHOD

Using administrative person-month records of Regular Army enlisted soldiers from 2004 to 2009, we identified 9650 person-months with a first documented SA and an equal-probability control sample (n=153,528 person-months). Person-months were weighted to the population and pooled over time. After examining the association of sex with SA in a logistic regression analysis, predictors were examined separately among women and men.

RESULTS

Women (an estimated 13.7% of the population) accounted for 25.2% of SAs and were more likely than men to attempt suicide after adjusting for sociodemographic, service-related, and mental health diagnosis (MHDx) variables (odds ratio=1.6; 95% confidence interval, 1.5-1.7). Women with increased odds of SA in a given person-month were younger, non-Hispanic White, less educated, in their first term of enlistment, never or previously deployed (vs. currently deployed), and previously received a MHDx. The same variables predicted SA among men. Interactions indicated significant but generally small differences between women and men on 6 of the 8 predictors, the most pronounced being time in service, deployment status, and MHDx. Discrete-time survival models examining risk by time in service demonstrated that patterns for women and men were similar, and that women's initially higher risk diminished as time in service increased.

CONCLUSIONS

Predictors of documented SAs are similar for US Army women and men. Differences associated with time in service, deployment status, and MHDx require additional research. Future research should consider stressors that disproportionately affect women.

Temporal Sequencing of Mental Health Symptom Severity and Suicidal Ideation in Post-9/11 Men and Women Veterans Who Recently Separated from the Military

BACKGROUND

Despite some evidence for gender differences in associations between military veterans' mental health and suicidal ideation (SI), gender-specific prospective studies are lacking. The aims of this prospective study were to: (1) examine gender differences in veterans' initial status and trajectories of mental health severity and SI status and (2) identify temporal sequencing of mental health predictors of SI.

METHODS

Surveys of 1035 US veterans were administered at 3 time-points (T1, T2, T3) over a 7-year period following military separation, with an initial assessment within 2 years of military separation.

RESULTS

Men reported higher baseline PTSD and alcohol misuse severity than women. No baseline gender difference in SI prevalence was detected. Baseline gender differences in mental health severity were maintained over time. For both men and women, remittance of SI was more likely from T1 to T2 than from T2 to T3 while chronic SI was more likely from T2 to T3. The strongest predictors of T3 SI were prior SI followed by alcohol misuse, depression, and PTSD severity with stronger effects for T2 predictors than T1.

CONCLUSION

The maintenance of baseline gender differences throughout trajectories of mental health predictors of SI supports the need for ongoing gender-specific mental health services. Current governmental interorganizational efforts are focused on suicide prevention during the first year after military service completion. Our findings indicate a need to extend mental health screening and treatment beyond the early post-military period to reduce risk and recurrence of SI for both men and women.

Internal Battles: Examining How Anger/Hostility Moderate the Association Between Negative Urgency and Suicidal Desire Variables in Military and Civilian Samples

OBJECTIVE

Suicide is consistently within the top ten leading causes of death in the United States. The suicide rate of National Guard personnel is elevated relative to the general population; however, research suggests that many of the suicide risk factors for military personnel are similar to the suicide risk factors for civilians. We examined whether negative urgency moderated the relationships between anger/hostility and perceived burdensomeness/thwarted belongingness in both a military and civilian samples.

METHOD

There were two samples in the current study: (1) military personnel (majority national guard) and (2) community members oversampled for suicide attempt history.

RESULTS

Our hypotheses were partially supported with the interaction of hostility and negative urgency predicting perceived burdensomeness in the military sample. Within civilians, anger interacted with negative urgency to predict perceived burdensomeness. There were nonsignificant findings for analyses predicting thwarted belongingness. Exploratory analyses indicated that in both samples, anger and hostility interacted with negative urgency to predict suicidal ideation.

CONCLUSIONS

Results suggest that aggressive attributes may contribute to individuals feeling as though they are a burden on others when moderate to high levels of negative urgency are present. Additionally, this study provides foundational support for the differences between suicidal desire and ideation.

The Process of Developing a Unit-Based Army Resilience Program

PURPOSE OF REVIEW

We review military doctrine, military public health data, medical literature, and educational literature with the intent of condensing key precepts into a succinct, pragmatic description of the essential steps for leaders looking to build a resilience program to provide secondary prevention services.

RECENT FINDINGS

Although there continues to be a shortage of high-level evidence in support of specific preventive programs, there are numerous large-scale reviews of prevention and health promotion efforts. When combined with population-specific analyses, several essential concepts emerge as most relevant for smaller-scale prevention programs. The key tenets that program leaders should embrace to optimize program effectiveness include utilization of an instructional design approach, focus on evidence-based practices, and teaching resilience skills in order to decrease risk factors and increase protective factors for improved mental health outcomes.

Incidence of major depression diagnoses in the Canadian Armed Forces: longitudinal analysis of clinical and health administrative data

PURPOSE

Major depression is a leading cause of morbidity in military populations. However, due to a lack of longitudinal data, little is known about the rate at which military personnel experience the onset of new episodes of major depression. We used a new source of clinical and administrative data to estimate the incidence of major depression diagnoses in Canadian Armed Forces (CAF) personnel, and to compare incidence rates between demographic and occupational factors.

METHODS

We extracted all data recorded in the electronic medical records of CAF Regular Force personnel, at every primary care and mental health clinical encounter since 2016. Using a 12-month lookback period, we linked data over time, and identified all patients with incident diagnoses of major depression. We then linked clinical data to CAF administrative records, and estimated incidence rates. We used multivariate Poisson regression to compare adjusted incidence rates between demographic and occupational factors.

RESULTS

From January to December 2017, CAF Regular Force personnel were diagnosed with major depression at a rate of 29.2 new cases per 1000 person-years at risk. Female sex, age 30 years and older, and non-officer ranks were associated with significantly higher incidence rates.

CONCLUSIONS

We completed the largest study to date on diagnoses of major depression in the Canadian military, and have provided the first estimates of incidence rates in CAF personnel. Our results can inform future mental health resource allocation, and ongoing major depression prevention efforts within the Canadian Armed Forces and other military organizations.

Early First Deployment and Risk of Suicide Attempt Among First-term Enlisted Soldiers in the U.S. Army

OBJECTIVE

We examined early first deployment and subsequent suicide attempt among U.S. Army soldiers.

METHOD

Using 2004-2009 administrative data and person-month records of first-term, Regular Army, enlisted soldiers with one deployment (89.2% male), we identified 1,704 soldiers with a documented suicide attempt during or after first deployment and an equal-probability control sample (n = 25,861 person-months).

RESULTS

Logistic regression analyses indicated soldiers deployed within the first 12 months of service were more likely than later deployers to attempt suicide (OR = 1.7 [95% CI = 1.5-1.8]). Adjusting for sociodemographic characteristics, service-related characteristics, and previous mental health diagnosis slightly attenuated this association (OR = 1.6 [95% CI = 1.5-1.8]). Results were not modified by gender, deployment status, military occupation, or mental health diagnosis. The population-attributable risk proportion for deploying within the first 12 months of service was 17.8%. Linear spline models indicated similar risk patterns over time for early and later deployers, peaking at month 9 during deployment and month 5 postdeployment; however, monthly suicide attempt rates were consistently higher for early deployers.

CONCLUSIONS

Enlisted soldiers deployed within the first 12 months of service have elevated risk of suicide attempt during and after first deployment. Improved understanding of why early deployment increases risk can inform the development of policies and intervention programs.

Pre-deployment predictors of suicide attempt during and after combat deployment: Results from the Army Study to Assess Risk and Resilience in Servicemembers

BACKGROUND

Deployment-related experiences might be risk factors for soldier suicides, in which case identification of vulnerable soldiers before deployment could inform preventive efforts. We investigated this possibility by using pre-deployment survey and administrative data in a sample of US Army soldiers to develop a risk model for suicide attempt (SA) during and shortly after deployment.

METHODS

Data came from the Army Study to Assess Risk and Resilience in Servicemembers Pre-Post Deployment Survey (PPDS). Soldiers completed a baseline survey shortly before deploying to Afghanistan in 2011-2012. Survey measures were used to predict SAs, defined using administrative and subsequent survey data, through 30 months after deployment. Models were built using penalized regression and ensemble machine learning methods.

RESULTS

Significant pre-deployment risk factors were history of traumatic brain injury, 9 + mental health treatment visits in the 12 months before deployment, young age, female, previously married, and low relationship quality. Cross-validated AUC of the best penalized and ensemble models were .75-.77. 21.3-40.4% of SAs occurred among the 5-10% of soldiers with highest predicted risk and positive predictive value (PPV) among these high-risk soldiers was 4.4-5.7%.

CONCLUSIONS

SA can be predicted significantly from pre-deployment data, but intervention planning needs to take PPV into consideration.

Factors Associated With Suicide Ideation in US Army Soldiers During Deployment in Afghanistan

IMPORTANCE

Understanding suicide ideation (SI) during combat deployment can inform prevention and treatment during and after deployment.

OBJECTIVE

To examine associations of sociodemographic characteristics, lifetime and past-year stressors, and mental disorders with 30-day SI among a representative sample of US Army soldiers deployed in Afghanistan.

DESIGN, SETTING, AND PARTICIPANTS

In this survey study, soldiers deployed to Afghanistan completed self-administered questionnaires in July 2012. The sample was weighted to represent all 87 032 soldiers serving in Afghanistan. Prevalence of lifetime, past-year, and 30-day SI and mental disorders was determined. Logistic regression analyses examined risk factors associated with SI. Data analyses for this study were conducted between August 2018 and August 2019.

MAIN OUTCOMES AND MEASURES

Suicide ideation, lifetime and 12-month stressors, and mental disorders were assessed with questionnaires. Administrative records identified sociodemographic characteristics and suicide attempts.

RESULTS

A total of 3957 soldiers (3473 [weighted 87.5%] male; 2135 [weighted 52.6%] aged ≤29 years) completed self-administered questionnaires during their deployment in Afghanistan. Lifetime, past-year, and 30-day SI prevalence estimates were 11.7%, 3.0%, and 1.9%, respectively. Among soldiers with SI, 44.2% had major depressive disorder (MDD) and 19.3% had posttraumatic stress disorder in the past 30-day period. A series of analyses of the 23 grouped variables potentially associated with SI resulted in a final model of sex; race/ethnicity; lifetime noncombat trauma; past 12-month relationship problems, legal problems, and death or illness of a friend or family member; and MDD. In this final multivariable model, white race/ethnicity (odds ratio [OR], 3.1 [95% CI, 1.8-5.1]), lifetime noncombat trauma (OR, 2.1 [95% CI, 1.1-4.0]), and MDD (past 30 days: OR, 31.8 [95% CI, 15.0-67.7]; before past 30 days: OR, 4.9 [95% CI, 2.5-9.6]) were associated with SI. Among the 85 soldiers with past 30-day SI, from survey administration through 12 months after returning from deployment, 6% (5 participants) had a documented suicide attempt vs 0.14% (6 participants) of the 3872 soldiers without SI.

CONCLUSIONS AND RELEVANCE

This study suggests that major depressive disorder and noncombat trauma are important factors in identifying SI risk during combat deployment.

The Relationship between Post-Battle Experiences and Thwarted Belongingness and Perceived Burdensomeness in Three United States Military Samples

Suicide rates within the military are elevated relative to the general population; however, research suggests that many of the suicide risk factors for military personnel are similar to the suicide risk factors for civilians. Given that many military specific experiences (e.g., number of deployments) are not considered robust predictors of either suicidal ideation or behavior, it has been posited that deployment specific experiences (e.g., post-battle experiences) may be better able to explain the increased rates of suicide among military personnel. Therefore, the current study aimed to examine the relationship between post-battle experiences and perceived burdensomeness (PB), thwarted belongingness (TB), and suicidal ideation within 3 different military samples: a non-clinical sample of Army National Guard personnel, a non-clinical sample of active duty U.S. Air Force Security Forces personnel, and a clinical sample of U.S. Army personnel receiving outpatient treatment. Post-battle experiences were found to be significantly associated with TB in both non-clinical samples; however, the association between post-battle experiences and TB was non-significant within the clinical sample. Furthermore, results indicated that post-battle experiences were not significantly associated with either PB or suicidal ideation in any of the samples. These findings suggest that in non-clinical samples, post-battle experiences impact a soldier's ability to feel connected to others. Within clinical samples, results indicate that post-battle experiences may not be a direct contributor to either PB or TB. These results indicate a need for universal intervention promoting interpersonal support of military personnel and their families prior to development of further need for psychological interventions. This upstream approach may decrease further development of TB and potentially prevent suicidal desire.

Intimate Relationships Buffer Suicidality in National Guard Service Members: A Longitudinal Study

OBJECTIVE

Members of the U.S. military are at a high suicide risk. While studies have examined predictors of suicide in the U.S. military, more studies are needed which examine protective factors for suicide. Informed by the interpersonal theory of suicide, this study examined the strength of the intimate relationship and its role as a buffer of suicidality in National Guard service members.

METHOD

A total of 712 National Guard residing in a Midwestern state, who had all recently returned home from a deployment, took part in this study and completed surveys at 6 and 12 months postdeployment. They were assessed on suicide risk, mental health (depression, post-traumatic stress disorder, anxiety), and relationship satisfaction.

RESULTS

Lower relationship satisfaction and more depressive symptoms at the 6-month assessment were significantly related to greater suicide risk at 12 months. Each interaction between couple satisfaction and three mental health variables (PTSD, depression, and anxiety) at the 6-month assessment was significantly associated with suicide risk at 12 months.

CONCLUSIONS

The strength of the intimate relationship serves as a buffer for suicide in National Guard service members who have PTSD, anxiety, or depression. Interventions that strengthen these intimate relationships could reduce suicide in service members.

Treatment of posttraumatic stress disorder: Focus on pharmacotherapy

Current clinical practice guidelines for the treatment of posttraumatic stress disorder offer varying recommendations regarding the use of pharmacotherapy. Many direct head-to-head comparisons of pharmacotherapy are lacking, and recommendations are based on meta-analyses and small trials. While selective serotonin reuptake inhibitors and serotonin norepinephrine reuptake inhibitors are considered first-line pharmacotherapy, clear distinctions do not exist when considering other classes of psychotropic medications. Ultimately, when selecting an appropriate medication for a patient diagnosed with posttraumatic stress disorder, the clinician needs to consider the current symptomatology being experienced, comorbid conditions, and evidence for efficacy of specific treatments prior to initiating medications.

When the going gets tough

Purpose

Integrating the transactional model of stress with risk analysis perspectives and death awareness theory, this paper aims to explore how job-related risks and the experience of a critical job injury influence work stress and withdrawal intentions for workers in dangerous occupations, as well as the relationship between stress and job performance.

Design/methodology/approach

The study relies on survey and archival data from Mexican police officers, taking into account the occupational and national context.

Findings

The results showed differences between officers who had or had not been injured in the line of duty and a complex stress-performance relationship for the former group. Officers who had been injured reported higher job-related risks and work stress. Also, for them, work stress had a direct, positive relationship with job performance, as well as an indirect, negative relationship with such outcome through work withdrawal intentions.

Research limitations/implications

The uniqueness of the setting may present problems with generalisability, but the study provides a rich contextual description to guide scholars and practitioners. The complex work stress – job performance relationship implies that managers can assess and use workers’ construction of danger and risk to improve their work performance, but that they should be mindful of potential adverse repercussions on work withdrawal.

Originality/value

The study informs the transactional model of stress and the monolithic model of police culture, affirms the role of perception of resources to manage risk and stress in dangerous occupations, introduces the role of mortality cues in shaping risk perceptions and points to the benefits of performance metrics in risk and work stress research.

A retrospective cohort study comparing non-fatal self-harm emergency department visits between Canadian veterans living in Ontario and matched civilians

This was a retrospective cohort study linking provincial administrative databases to compare rates of non-fatal self-harm between CAF and RCMP veterans living in Ontario and age-matched civilians. This study included male veterans who registered for provincial health insurance between 2002 and 2013. A civilian comparator group was matched 4:1 on age and sex. Self-harm emergency department (ED) visits were identified from provincial ED admission records until death or December 31, 2015. Multivariable Poisson regression compared the risk of self-harm. Analyses adjusted for age, geography, income, rurality, and major physical and mental comorbidities. In total, 9514 male veterans and 38,042 age- and sex-matched civilians were included. Overall, 0.55% of veterans had at least one non-fatal self-harm ED visit, compared with 0.81% of civilians. The rate of ED self-harm visits was 40% lower in the veteran population, compared to the civilian population (RR = 0.60; 95% CI = 0.41-0.87). In both groups, psychosocial and physical comorbidities, and death by suicide were more common in those who self-harmed than those who did not. A better understanding of why veterans have a lower rate of self-harm emergency department visits and how it is related to the number of completed suicides is an important area for future consideration.

Suicide attempts among activated soldiers in the U.S. Army reserve components

BACKGROUND

Although the majority of active duty U.S. Army soldiers are full-time personnel in the Active Component (AC), a substantial minority of soldiers on active duty are in the Reserve Components (RCs). These "citizen-soldiers" (Army National Guard and Army Reserve) represent a force available for rapid activation in times of national need. RC soldiers experience many of the same stressors as AC soldiers as well as stressors that are unique to their intermittent service. Despite the important role of RC soldiers, the vast majority of military mental health research focuses on AC soldiers. One important goal of the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS) is to address this gap. Here we examine predictors of suicide attempts among activated RC soldiers.

METHODS

This longitudinal, retrospective cohort study used individual-level person-month records from Army and Department of Defense administrative data systems to examine socio-demographic, service-related, and mental health predictors of medically documented suicide attempts among activated RC soldiers during 2004-2009. Data from all 1103 activated RC suicide attempters and an equal-probability sample of 69,867 control person-months were analyzed using a discrete-time survival framework.

RESULTS

Enlisted soldiers comprised 84.3% of activated RC soldiers and accounted for 95.7% of all activated RC suicide attempts (overall rate = 108/100,000 person-years, more than four times the rate among officers). Multivariable predictors of enlisted RC suicide attempts included being female, entering Army service at age ≥ 25, current age < 30, non-Hispanic white, less than high school education, currently married, having 1-2 years of service, being previously deployed (vs. currently deployed), and history of mental health diagnosis (particularly when documented in the previous month). Predictors among RC officers (overall rate = 26/100,000 person-years) included being female and receiving a mental health diagnosis in the previous month. Discrete-time hazard models showed suicide attempt risk among enlisted soldiers was inversely associated with time in service.

CONCLUSIONS

Risk factors for suicide attempt in the RCs were similar to those previously observed in the AC, highlighting the importance of research and prevention focused on RC enlisted soldiers in the early phases of Army service and those with a recent mental health diagnosis.

Risk factors and timing of suicide attempts among US Army Reserve Component soldiers during deployment to the Afghanistan and Iraq wars: Results from the Army Study to Assess Risk and Resilience in Servicemembers

Objective: During the wars in Afghanistan and Iraq, suicidal behaviors increased among U.S. Army soldiers. Although Reserve Component (RC) soldiers (National Guard and Army Reserve) comprise approximately one third of those deployed in support of the wars, few studies have examined suicidal behaviors among these "citizen-soldiers". The objective of this study is to examine suicide attempt risk factors and timing among RC enlisted soldiers. Methods: This longitudinal, retrospective cohort study used individual-level person-month records from Army and Department of Defense administrative data systems to examine socio-demographic, service-related, and mental health predictors of medically documented suicide attempts among enlisted RC soldiers during deployment from 2004-2009. Data were analyzed using discrete-time survival models. Results: A total of 230 enlisted RC soldiers attempted suicide. Overall, the in-theater suicide attempt rate among RC soldiers was 81/100,000 person-years. Risk was highest in the fifth month of deployment (13.8 per 100,000 person-months). Suicide attempts were more likely among soldiers who were women (adjusted odds ratio, aOR = 2.5 [95% CI: 1.8-3.5]), less than high school educated (aOR = 1.8 [95% CI: 1.3-2.5]), in their first 2 years of service (aOR = 2.0 [95% CI: 1.2-3.4]), were currently married (aOR = 2.0 [95% CI: 1.5-2.7]), and had received a mental health diagnosis in the previous month (aOR = 24.7 [95% CI: 17.4-35.0]). Conclusions: Being female, early in service and currently married are associated with increased odds of suicide attempt in RC soldiers. Risk of suicide attempt was greatest at mid deployment. These predictors and the timing of suicide attempt for RC soldiers in-theater are largely consistent with those of deployed Active Component (Regular) soldiers. Results also reinforce and replicate the findings among Active Component soldiers related to the importance of a recent mental health diagnosis and the mid-deployment as a period of enhanced risk.

The Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS): progress toward understanding suicide among soldiers

Responding to an unprecedented increase in the suicide rate among soldiers, in 2008 the US Army and US National Institute of Mental Health funded the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS), a multicomponent epidemiological and neurobiological study of risk and resilience factors for suicidal thoughts and behaviors, and their psychopathological correlates among Army personnel. Using a combination of administrative records, representative surveys, computerized neurocognitive tests, and blood samples, Army STARRS and its longitudinal follow-up study (STARRS-LS) are designed to identify potentially actionable findings to inform the Army's suicide prevention efforts. The current report presents a broad overview of Army STARRS and its findings to date on suicide deaths, attempts, and ideation, as well as other important outcomes that may increase suicide risk (e.g., mental disorders, sexual assault victimization). The findings highlight the complexity of environmental and genetic risk and protective factors in different settings and contexts, and the importance of life and career history in understanding suicidal thoughts and behaviors.

Risk factors for the transition from suicide ideation to suicide attempt: Results from the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS)

Prior research has shown that most known risk factors for suicide attempts in the general population actually predict suicide ideation rather than attempts among ideators. Yet clinical interest in predicting suicide attempts often involves the evaluation of risk among patients with ideation. We examined a number of characteristics of suicidal thoughts hypothesized to predict incident attempts in a retrospective analysis of lifetime ideators (N = 3,916) drawn from a large (N = 29,982), representative sample of United States Army soldiers. The most powerful predictors of first nonfatal lifetime suicide attempt in a multivariate model controlling for previously known predictors (e.g., demographics, mental disorders) were: recent onset of ideation, presence and recent onset of a suicide plan, low controllability of suicidal thoughts, extreme risk-taking or "tempting fate," and failure to answer questions about the characteristics of one's suicidal thoughts. A predictive model using these risk factors had strong accuracy (area under the curve [AUC] = .93), with 66.2% of all incident suicide attempts occurring among the 5% of soldiers with highest composite predicted risk. This high concentration of risk in this retrospective study suggests that a useful clinical decision support model could be constructed from prospective data to identify those with highest risk of subsequent suicide attempt. (PsycINFO Database Record

Predicting suicide attempts among soldiers who deny suicidal ideation in the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS)

Most nonfatal suicide attempts and suicide deaths occur among patients who deny suicidal ideation (SI) during suicide risk screenings. Little is known about risk factors for suicidal behaviors among such patients. We investigated this in a representative sample of U.S. Army soldiers who denied lifetime SI in a survey and were then followed through administrative records for up to 45 months to learn of administratively-recorded suicide attempts (SA). A novel two-stage risk assessment approach was used that combined first-stage prediction from administrative records to find the subsample of SI deniers with highest subsequent SA risk and then used survey reports to estimate a second-stage model identifying the subset of individuals in the high-risk subsample at highest SA risk. 70% of survey respondents denied lifetime SI. Administrative data identified 30% of this 70% who accounted for 81.2% of subsequent administratively-recorded SAs. A relatively small number of self-report survey variables were then used to create a prediction model that identified 10% of the first-stage high-risk sample (i.e., 3% of all soldiers) at highest SA risk (accounting for 45% of SAs in the total sample). We close by discussing potential applications of this approach for identifying future SI deniers at highest SA risk.

Depression among military spouses: Demographic, military, and service member psychological health risk factors

BACKGROUND

More than a decade of war has strained service members and their families and the psychological health of military spouses is a concern. This study uses data from the largest study of military families in the United States to examine the demographic, military-specific, and service member mental health correlates of probable diagnosis of major depressive disorder (MDD) among military spouses.

METHODS

Data were from service member-spouse dyads from all branches of the U.S. military. Demographic and military-specific factors were assessed using administrative personnel records and survey data.

RESULTS

Of the 9,038 spouses, 4.9% had a probable diagnosis of MDD. In unadjusted models, spouses of service members who deployed and experiencecd combat-related events, were enlisted, had a probable posttraumatic stress disorder (PTSD) diagnosis, or screened positive for alcohol misuse were more likely to screen positive for MDD. In adjusted models, only spouses married to enlisted service members or those with PTSD had increased risk for MDD. Other demographic and military-related factors associated with MDD in spouses included less educational attainment, unemployment, having four or more children, and having prior military service (although not currently serving in the military) in the adjusted models.

CONCLUSIONS

Findings characterize demographic, military, and service member psychological health factors that are associated with depression among military spouses. These findings imply that deployment alone may not negatively affect military spouses, but rather it may be the mental health impact on the service member, especially PTSD that increases the odds for MDD among military spouses.

Moral injury, suicide ideation, and behavior among combat veterans: The mediating roles of entrapment and depression

Combat veterans have been identified as a major at-risk group for suicide. Moral injury (MI) experiences have recently been acknowledged as significant stressful combat events that may lead to psychopathology, such as suicidal ideation and behaviors (SIB). In this study, we aimed to examine to what extent potential MI events may comprise risk factors for SIB and to explore the mediating role of the entrapment experience in this relationship. A sample of 191 Israeli combat veterans (M_age= 25.39, SD = 2.37) completed validated self-report questionnaires in a cross-sectional design study. All potential MI experiences were significantly related to SIB levels among veterans. Moreover, self- and betrayal-based MI experiences were significantly associated with sense of entrapment, which subsequently was associated with high levels of SIB. The integrative model indicated that entrapment and depression served as mediators in the association of MI-SIB. Even years after their release from military service, veterans exposed to potential MI experiences may still feel consumed by their painful memories and still have premonitions of a foreshortened future. Thus, they are more prone to SIB as well as to other mental health problems.

Military Deployments and Suicide: A Critical Examination

Deployment to a combat zone is a fundamental mission for most military forces, but prior research suggests that there is a complex and nuanced association between deployment and related risk factors for suicide. Deployment and combat experiences vary greatly among military personnel and can affect a variety of protective and risk factors for suicide. This article offers a critical examination of the association among modern U.S. military deployments, suicide attempts, and death while considering the context of a prominent theory of suicide. Although previous work has demonstrated that deployment is not associated with suicide overall in this population, there is growing evidence that risk may be elevated shortly after deployment, and for some subgroups. Specific aspects of combat exposure, including the experience of killing or witnessing death in combat, may be important contributing factors. An analysis of the literature illustrates that deployment-related risk factors for suicide are complex. The limitations of the literature are discussed, and future directions are suggested.

Alcohol and Suicide Risk: Examining the Role of Meaning-Making

OBJECTIVE

Conceptual understandings of meaning-making suggest that it may have protective value in regard to alcohol misuse and suicidal behavior. Accordingly, the aim of this study was to examine whether meaning-making attenuated the relationship between alcohol misuse and suicide risk severity in a population of active-duty service members.

METHODS

The sample (N = 97) was recruited while presenting for emergency behavioral health services in circumstances indicative of high-risk suicidality: endorsing current suicidal ideation with intent to die. Those who reported ideation with a lifetime history of a past suicide attempt were conceptualized as being in a more severe category of suicide risk than ideation without a lifetime history of a past suicide attempt. Participants completed the Suicidal Behaviors Questionnaire-Revised, Meaning in Life Questionnaire, Alcohol Use Disorders Identification Test consumption questions, and items that assessed demographic variables. Data were analyzed using chi-squared test of independence, Fisher's exact test, Kendall rank correlation coefficient, and logistic regression modeling.

RESULTS

Regression analysis identified a statistically significant association between number of drinks consumed daily and reporting a lifetime history of a past suicide attempt, odds ratio (OR) = 1.60, 95% confidence interval (CI) [1.11, 2.32], p = .01. Number of drinks consumed remained significant even after adjusting for both the search for and presence of meaning, OR = 1.70, 95% CI [1.16, 2.51], p = .01. These results remained unchanged even when adjusting for gender, race, ethnicity, and relationship status. No statistically significant interaction effects were noted between meaning-making and alcohol consumption.

CONCLUSIONS

Meaning-making did not appear to attenuate the effect of alcohol misuse on suicide risk severity in a sample of service members at high-risk of suicidality. Additional research is needed to better understand the relationship among meaning-making, alcohol misuse, and suicidal behavior.

Risk Factors Associated With Attempted Suicide Among US Army Soldiers Without a History of Mental Health Diagnosis

IMPORTANCE

The US Army suicide attempt rate increased sharply during the wars in Afghanistan and Iraq. Although soldiers with a prior mental health diagnosis (MH-Dx) are known to be at risk, little is known about risk among those with no history of diagnosis.

OBJECTIVE

To examine risk factors for suicide attempt among soldiers without a previous MH-Dx.

DESIGN, SETTING, AND PARTICIPANTS

In this retrospective longitudinal cohort study using administrative data from the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS), person-month records were identified for all active-duty Regular Army enlisted soldiers who had a medically documented suicide attempt from January 1, 2004, through December 31, 2009 (n = 9650), and an equal-probability sample of control person-months (n = 153 528). Data analysis in our study was from September 16, 2017, to June 6, 2018. In a stratified sample, it was examined whether risk factors for suicide attempt varied by history of MH-Dx.

MAIN OUTCOMES AND MEASURES

Suicide attempts were identified using Department of Defense Suicide Event Report records and International Classification of Diseases, Ninth Revision, Clinical Modification E95 × diagnostic codes. Mental health diagnoses and related codes, as well as sociodemographic, service-related, physical health care, injury, subjection to crime, crime perpetration, and family violence variables, were constructed from Army personnel, medical, legal, and family services records.

RESULTS

Among 9650 enlisted soldiers with a documented suicide attempt (74.8% male), 3507 (36.3%) did not have a previous MH-Dx. Among soldiers with no previous diagnosis, the highest adjusted odds of suicide attempt were for the following: female sex (odds ratio [OR], 2.6; 95% CI, 2.4-2.8), less than high school education (OR, 1.9; 95% CI, 1.8-2.0), first year of service (OR, 6.0; 95% CI, 4.7-7.7), previously deployed (OR, 2.4; 95% CI, 2.1-2.8), promotion delayed 2 months or less (OR, 2.1; 95% CI, 1.7-2.6), past-year demotion (OR, 1.6; 95% CI, 1.3-1.8), 8 or more outpatient physical health care visits in the past 2 months (OR, 3.3; 95% CI, 2.9-3.8), past-month injury-related outpatient (OR, 3.0; 95% CI, 2.8-3.3) and inpatient (OR, 3.8; 95% CI, 2.3-6.3) health care visits, previous combat injury (OR, 1.6; 95% CI, 1.0-2.4), subjection to minor violent crime (OR, 1.6; 95% CI, 1.1-2.4), major violent crime perpetration (OR, 2.0; 95% CI, 1.3-3.0), and family violence (OR, 2.9; 95% CI, 1.9-4.4). Most of these variables were also associated with suicide attempts among soldiers with a previous MH-Dx, although the strength of associations differed.

CONCLUSIONS AND RELEVANCE

Suicide attempt risk among soldiers with unrecognized mental health problems is a significant and important challenge. Administrative records from personnel, medical, legal, and family services systems can assist in identifying soldiers at risk.

Savouring as a moderator of the combat exposure-mental health symptoms relationship

Engaging in firefights or witnessing death and other types of combat experiences are occupational hazards associated with Post Traumatic Stress Disorder (PTSD) and depression in military personnel returning from combat deployments. The present study examined savouring beliefs as a moderator of the relationship between combat exposure and mental health symptoms among U.S. Army soldiers deployed to Operation Iraqi Freedom and Operation Enduring Freedom. Soldiers (N = 885) completed measures of combat exposure, savouring beliefs, PTSD, and depression. Savouring was negatively related to symptoms of PTSD and depression and moderated the relationship between combat exposure and PTSD and depression among military personnel. These findings demonstrate that savouring positive life experiences may be beneficial to overall positive mental health and potentially buffer negative mental health symptoms related to traumatic experiences. Discussion focuses on the possibility of training individuals exposed to trauma in savouring techniques.

Nonfatal Suicidal Behaviors in the Administrative Records of Activated U.S. Army National Guard and Army Reserve Soldiers, 2004-2009

OBJECTIVE

The U.S. Army suicide rate increased sharply during the wars in Iraq and Afghanistan. There is limited information about medically documented, nonfatal suicidal behaviors among soldiers in the Army's Reserve Component (RC), which is composed of the Army National Guard and Army Reserve. Here we examine trends and sociodemographic correlates of suicide attempts, suspicious injuries, and suicide ideation among activated RC soldiers.

METHODS

Data come from the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS) Historical Administrative Data Study (HADS), which integrates administrative records for all soldiers on active duty for the years 2004 through 2009 (n = 1.66 million).

RESULTS

We identified 2,937 unique RC soldiers on active duty with a nonfatal suicidal event documented at some point during the HADS study period. There were increases in the annual incidence rates of suicide attempts (71 to 204/100,000 person-years) and suicide ideation (326 to 425/100,000 person-years). Incidence rates for suspicious injuries also generally increased but were more variable. Using hierarchical classification rules, we identified the first instance of each soldier's most severe behavior (suicide attempt versus suspicious injury versus suicide ideation). For each of those suicide- or injury-related outcomes, we found increased risk among those who were female, younger, non-Hispanic White, less educated, never married, and lower-ranking enlisted. These sociodemographic associations significantly differed across outcomes, although the patterns were similar.

CONCLUSION

Results provide a broad overview of nonfatal suicidal trends in the RC during the period 2004 through 2009. They also demonstrate that integration of multiple administrative data systems enriches analysis of the predictors of such events.

Associations of Time-Related Deployment Variables With Risk of Suicide Attempt Among Soldiers: Results From the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS)

Importance

There has been limited systematic examination of whether risk of suicide attempt (SA) among US Army soldiers is associated with time-related deployment variables, such as time in service before first deployment, duration of first deployment, and dwell time (DT) (ie, length of time between deployments).

Objective

To examine the associations of time-related deployment variables with subsequent SA among soldiers who had deployed twice.

Design, Setting, and Participants

Using administrative data from January 1, 2004, through December 31, 2009, this longitudinal, retrospective cohort study identified person-month records of active-duty Regular Army enlisted soldiers who had served continuously in the US Army for at least 2 years and deployed exactly twice. The dates of analysis were March 1 to December 1, 2017. There were 593 soldiers with a medically documented SA during or after their second deployment. An equal-probability sample of control person-months was selected from other soldiers with exactly 2 deployments (n = 19 034). Logistic regression analyses examined the associations of time in service before first deployment, duration of first deployment, and DT with subsequent SA.

Main Outcomes and Measures

Suicide attempts during or after second deployment were identified using US Department of Defense Suicide Event Report records and International Classification of Diseases, Ninth Revision, Clinical Modification E950 to E958 diagnostic codes. Independent variables were constructed from US Army personnel records.

Results

Among 593 SA cases, most were male (513 [86.5%]), white non-Hispanic (392 [66.1%]), at least high school educated (477 [80.4%]), currently married (398 [67.1%]), and younger than 21 years when they entered the US Army (384 [64.8%]). In multivariable models adjusting for sociodemographics, service-related characteristics, and previous mental health diagnosis, odds of SA during or after second deployment were higher among soldiers whose first deployment occurred within the first 12 months of service vs after 12 months (odds ratio, 2.0; 95% CI, 1.6-2.4) and among those with a DT of 6 months or less vs longer than 6 months (odds ratio, 1.6; 95% CI, 1.2-2.0). Duration of first deployment was not associated with subsequent SA. Analysis of 2-way interactions indicated that the associations of early deployment and DT with SA risk were not modified by other characteristics. Multivariable population-attributable risk proportions were 14.2% for deployment within the first 12 months of service and 4.0% for DT of 6 months or less.

Conclusions and Relevance

Time in service before first deployment and DT are modifiable risk factors for SA risk among soldiers.