Association of suicidal ideation with trajectories of deployment-related PTSD symptoms

Psychiatry research, 2017

Combat stress reaction (CSR) has widespread long-term consequences, including profound psychopathology in the form of posttraumatic stress disorder (PTSD). Studies have established the link between combat, PTSD, and suicidality. However, little is known about the temporal course of suicidal ideation (SI) in general, specifically among war veterans. We aimed to trace the trajectories of SI in the aftermath of war and to explore the role of CSR and PTSD in SI trajectories. Israeli veterans with CSR (n=164) and a matched control group (NCSR, n=111) were assessed, using self-report measures at three points over the course of 20 years. Veterans with CSR reported significantly higher levels of SI, compared to the NCSR group at all measurement points. Among veterans with CSR, SI increased 2 years after the war and then decreased 20 years following the war. This pattern was particularly characteristic of veterans with chronic PTSD. The results indicate that CSR is a strong predictor of subs...

Journal of affective disorders, 2017

Given the alarming rate of military suicides, it is critical to identify the factors that increase risk of suicidal thoughts and behaviors among active duty military personnel. This study examined a predictive model of suicidal ideation among 366 treatment-seeking active duty military personnel with posttraumatic stress disorder (PTSD) following deployments to or near Iraq or Afghanistan. Structural equation modeling was employed to examine the relative contribution of combat exposure, social support, PTSD severity, depressive symptoms, guilt, and trauma-related cognitions on suicidal ideation. The final structural equation model had a highly satisfactory fit [χ(2) (2) =2.023, p=.364; RMSEA =.006; CFI =1; GFI =.998]. PTSD severity had an indirect effect on suicidal ideation via trauma-related cognitions. Depression had a direct positive effect on suicidal ideation; it also had an indirect effect via trauma-related cognitions and interpersonal support. Among participants who had made...

Depression and Anxiety, 2018

Background: Most people with suicide ideation (SI) do not attempt suicide (SA). Understanding the transition from current/recent SI to SA is important for mental health care. Our objective was to identify characteristics that differentiate SA from 30-day SI among representative U.S. Army soldiers. Methods: Using a unique case-control design, soldiers recently hospitalized for SA (n = 132) and representative soldiers from the same four communities (n = 10,193) were administered the same questionnaire. We systematically identified variables that differentiated suicide attempters from the total population, then examined whether those same variables differentiated all 30-day ideators (n = 257) from the total population and attempters from nonattempting 30-day ideators. Results: In univariable analyses, 20 of 23 predictors were associated with SA in the total population (0.05 level). The best multivariable model included eight significant predictors: interpersonal violence, relationship problems, major depressive disorder, posttraumatic stress disorder (PTSD), and substance use disorder (all having positive associations), as well as past 12-month combat trauma, intermittent explosive disorder (IED), and any college education (all having negative associations).

Suicide and Life-Threatening Behavior, 2015

We examined the associations between mental disorders and suicidal behavior (ideation, plans, and attempts) among new soldiers using data from the New Soldier Study (NSS) component of the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS; n=38,507). Most new soldiers with a pre-enlistment history of suicide attempt reported a prior mental disorder (59.0%). Each disorder examined was associated with increased odds of suicidal behavior (ORs=2.6-8.6). Only PTSD and disorders characterized by irritability and impulsive/aggressive behavior (i.e., bipolar disorder, conduct disorder, oppositional defiant disorder, and attentiondeficit/hyperactivity disorder) predicted unplanned attempts among ideators. Mental disorders are important predictors of pre-enlistment suicidal behavior among new soldiers and should figure prominently in suicide screening and prevention efforts. Suicide is a leading cause of death in the US and worldwide (Nock et al 2012) and has become an especially alarming problem among US Army soldiers. The Army suicide rate

Depression and Anxiety, 2014

Background: The prevalence of suicide among U.S. Army soldiers has risen dramatically in recent years. Prior studies suggest that most soldiers with suicidal behaviors (i.e., ideation, plans, and attempts) had first onsets prior to enlistment. However, those data are based on retrospective self-reports of soldiers later in their Army careers. Unbiased examination of this issue requires investigation of suicidality among new soldiers. Method: The New Soldier Study (NSS) of the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS) used fully structured self-administered measures to estimate preenlistment histories of suicide ideation, plans, and attempts among new soldiers reporting for Basic Combat Training in 2011-2012. Survival models examined sociodemographic correlates of each suicidal outcome. Results: Lifetime prevalence estimates of preenlistment suicide ideation, plans, and attempts were 14.1, 2.3, and 1.9%, respectively. Most reported onsets of suicide plans and attempts (73.3-81.5%) occurred within the first year after onset of ideation. Odds of these lifetime suicidal behaviors among new soldiers were positively, but weakly associated with being female, unmarried, religion other than Protestant or Catholic, and a race/ethnicity other than non-Hispanic White, non-Hispanic Black, or Hispanic.

Despite well-documented postdeployment readjustment problems affecting veterans of Operations Enduring Freedom (OEF) and Iraqi Freedom (OIF), few studies have explored the possible relationship of readjustment stressors to the recent increase in military suicide. This study examined associations between suicidal ideation and postdeployment readjustment problems using cross-sectional population-based survey data from 1665 National Guard members who recently returned from Iraq. The findings suggested that readjustment problems are widespread, with 45% of veterans endorsing one or more financial or family problems 3 months postdeployment. After adjusting for mental health and combat exposure, veterans with the highest number of readjustment stressors were at 52 times greater risk of suicidal ideation than those with no stressors. In a psychiatrically impaired subsample, the high stressor group experienced a fourfold risk of suicide ideation compared with those with no stressors. The findings argue for suicide prevention efforts that more directly target readjustment problems in returning OEF/OIF veterans.

Journal of Psychiatric Research, 2019

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

Journal of Affective Disorders, 2014

Background: Suicide rates have risen considerably in the United States Army in the past decade. Suicide risk is highest among those with past suicidality (suicidal ideation or attempts). The incidence of posttraumatic stress disorder (PTSD) and depressive illnesses has risen concurrently in the U.S. Army. We examined the relationship of PTSD and depression, independently and in combination, and rates of pastyear suicidality in a representative sample of U.S. Army soldiers. Methods: This study used the DoD Survey of Health Related Behaviors Among Active Duty Military Personnel (DoD HRB) (N¼ 5927). Probable PTSD and depression were assessed with the PTSD Checklist (PCL) and the 10-item short form of the Center for Epidemiologic Studies Depression Scale (CES-D), respectively. Past-year suicidality was assessed via self-report. Results: Six percent of Army service members reported suicidality within the past year. PTSD and MDD were each independently associated with past-year suicidality. Soldiers with both disorders were almost three times more likely to report suicidality within the past year than those with either diagnosis alone. Population-attributable risk proportions for PTSD, depression, and both disorders together were 24%, 29%, and 45%, respectively. Limitations: The current study is subject to the limitations of a cross-sectional survey design and the selfreport nature of the instruments used. Conclusions: PTSD and depression are each associated with suicidality independently and in combination in the active duty component of the U.S. Army. Soldiers presenting with either but especially both disorders may require additional outreach and screening to decrease suicidal ideation and attempts.

Journal of Abnormal Psychology, 2018

Persistent suicide ideation (SI) is known to be a risk factor for subsequent suicidal behaviors. Reducing SI persistence among people with a history of SI consequently might be a useful target for preventive intervention; however, basic information is lacking about patterns and predictors of SI persistence. We report preliminary retrospective data on annual SI persistence in a representative sample of 3,501 U.S. Army soldiers with lifetime SI from the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS). Reports about age-of-onset and number of years with SI were used to estimate two definitions of persistence: persistence beyond year-ofonset and proportional annual persistence (i.e., percentage of years with SI since year-of-onset). Results revealed that for 47.8% of respondents with lifetime SI, their SI did not persist beyond the year-of-onset. For the 52.2% whose SI did persist beyond the year-of-onset, the median (interquartile range) proportional annual persistence was 33% (17-67%). Significant predictors of increased persistence were different for respondents with pre-enlistment SI onset (prior histories of attention-deficit/hyperactivity disorder [ADHD], bipolar disorder, and panic disorder) and postenlistment SI onset (male, combat support military occupation specialty, prior histories of ADHD, panic disorder, and posttraumatic stress disorder). These predictors of persistence are different

Cognitive Therapy and Research, 2017

Inconsistent findings have been reported by previous cross-sectional studies regarding the association between specific posttraumatic stress disorder (PTSD) symptom clusters and suicidality. To advance the understanding of the role of specific PTSD symptoms in the development of suicidality, the primary aim of this study was to investigate the predictive effects of the three specific PTSD symptom clusters on suicidal ideation prospectively. Fifty-six individuals diagnosed with PTSD completed a two-stage research design, at baseline and 13–15 months follow-up. The clinician administered PTSD scale (CAPS) was used to assess the severity of the PTSD symptom clusters and validated self-report measures were used to assess suicidal ideation, severity of depressive symptoms and perceptions of defeat entrapment. The results showed that only the hyperarousal symptom cluster significantly predicted suicidal ideation at follow-up after controlling for baseline suicidal ideation, severity of de...