Predictors of suicidal ideation among active duty military personnel with posttraumatic stress disorder

The impact of social support, unit cohesion, and trait resilience on PTSD in treatment-seeking military personnel with PTSD: The role of posttraumatic cognitions

Prevailing models of posttraumatic stress disorder (PTSD) suggest that trauma-related cognitions have a critical role in influencing the persistence of posttraumatic stress symptoms. This study aimed to quantitatively synthesise the strength of the relationship between changes in trauma-related cognitions and PTSD severity in response to trauma-focused psychotherapy (T-F psychotherapy). We also sought to explore potential moderators of this relationship. Four databases (PubMed (includes MEDLINE), PsycINFO, PTSDpubs (formerly PILOTS), and Cochrane library) were searched for relevant studies. Additional 'hand search' strategies were conducted to obtain relevant articles that may have been missed in the original database searches. A total of 44 studies reporting 95 effect sizes with data from 5102 participants were extracted. Primary analyses indicated that pre-post reductions in trauma-related cognitions were significantly related to pre-post reductions in PTSD severity, r = .45 (95 %CI [.40,.49], p < .0001). Additionally, mid-treatment reductions in trauma-related cognitions were significantly associated with mid-treatment reductions in PTSD severity, r = .42 (95 %CI [.34,.50], p < .0001). Exploratory moderator analyses did not yield any significant findings of this relationship between changes in trauma-related cognitions and PTSD severity. Secondary analyses revealed that reductions in trauma-related cognitions after T-F psychotherapy were similalry related to reduced PTSD severity after treatment, r = .49 (95 %CI [.40,.57], p < .0001). These findings underscore the importance of reductions in trauma-related cognitions as a potential key indicator of PTSD symptom reduction throughout varied points of T-F psychotherapy. The implications for augmenting outcomes of T-F psychotherapy are discussed.

The prevalence of trauma in the lives of incarcerated women has been well-documented. Yet, few studies have included trauma-related cognitions, a common response to interpersonal trauma, in their analyses. The purpose of this study was to examine the relationship between trauma (pre-incarceration trauma [PIT] and incarceration-based trauma [IBT]), trauma-related cognitions [TRC] (i.e., Total; Self, Blame, and World), posttraumatic stress disorder (PTSD) severity, and vocational readiness-motivation (VR-M) in a random sample of incarcerated women in three prison facilities. A cross-sectional research design was employed using a stratified random sampling procedure. The stratum was housing security levels 1 to 4. The study was conducted in three prisons located in the midwestern region of the United States. Self-administered questionnaires measured PIT, IBT, TRC, PTSD, and VR-M. The study sample included (N = 250) female inmates: 152 White (60.8%), 50 Black (20.4%), 18 Biracial (7.3%), 13 Native American/Pacific Islander (5.3%), and 12 Latina (4.8%) females. The average age of participants was 36.2, and 82.4% were mothers. A key finding in this study was that TRC-Total was best predicted by trauma associated with the prison environment (IBT) and PTSD severity. Our findings indicated that for Black and Latina women, higher levels of trauma-related cognitions about "self" were predictive of a lower potential for vocational readiness in the area of motivation. Future examination of trauma's effect on the development of negative trauma-related cognitions about self (e.g., self as incompetent) has the potential to inform prison mental health practice and the development of clinical interventions to decrease trauma-related cognitions about self for incarcerated women with multiple trauma experiences.

A dynamical systems analysis of change in PTSD symptoms, depression symptoms, and suicidal ideation among military personnel during treatment for PTSD

The interpersonal theory of suicide (Joiner, 2005) may help explain high suicide rates among veterans with posttraumatic stress disorder (PTSD). It suggests that suicidal ideation results from believing that one is a burden on others (i.e., perceived burdensomeness) and does not belong among family, friends, or other social groups (i.e., thwarted belongingness). Evidence-based PTSD treatments, including cognitive processing therapy (CPT), decrease suicidal ideation, potentially through changes in these two theory constructs. The current study examined whether (a) changes in PTSD severity and suicidal ideation and (b) changes in negative cognitions about self and suicidal ideation were indirectly associated through changes in perceived burdensomeness and thwarted belongingness across PTSD treatment. Participants (N = 107) were veterans in a residential treatment program who were diagnosed with full or subthreshold PTSD and received CPT. Changes in PTSD symptom severity and negative cognitions about self predicted changes in suicidal ideation, B = 0.18, p < .001 and B = 0.50, p < .001, respectively. Changes in PTSD symptom severity and negative cognitions about self were indirectly associated with suicidal ideation through changes in perceived burdensomeness, B = 0.16, 95% CI [0.07, 0.25]; B = 0.27, 95% CI [0.05, 0.50], but not thwarted belongingness, B = -0.002; 95% CI [-0.06, 0.06]; B = 0.06, 95% CI [-0.12, 0.21] in separate models. These findings suggest that residential CPT may be uniquely equipped to decrease suicidality by restructuring negative beliefs, including perceptions of being a burden on others, and/or by alleviating the objective burden of PTSD.

Trauma related guilt cognitions partially mediate the relationship between PTSD symptom severity and functioning among returning combat veterans

Evidenced-based posttraumatic stress disorder (PTSD) treatments generally reduce suicidal ideation (SI), and the interpersonal theory of suicide (ITS) may theoretically account for this finding. The ITS posits that SI stems from feeling like a burden (i.e., perceived burdensomeness) and a lack of belonging (i.e., thwarted belongingness). Previous research suggests that change in PTSD severity has a significant indirect effect on change in SI through changes in perceived burdensomeness, but not thwarted belongingness, among patients receiving residential PTSD treatment in a Veterans Affairs (VA) medical center; however, no research has investigated these associations in an outpatient VA setting with fewer confounding factors that might affect ITS constructs. Therefore, the current sample included veterans (N = 126) who completed PTSD treatment and pre- and posttreatment assessments in a VA outpatient clinic. Results from parallel models of multiple indirect effects suggest that change in PTSD severity was indirectly associated with change in SI through changes in perceived burdensomeness, B = 0.35, p < .001; β = .36, p < .001, SE = .10, 95% CI [.15, .54], but not thwarted belongingness, B = 0.14, p = .146; β = .14, p = .161, SE = .10, 95% CI [-.05, .33]. Additional models were examined using PTSD cluster scores for exploratory purposes. The results indicate that PTSD treatment reduces the perceived and objective burden of PTSD to decrease SI. Study findings support the importance of access to evidence-based care to treat PTSD and alleviate burdensomeness for suicide prevention.

Suicide is a major public health concern accounting for 800 000 deaths globally each year. Although there have been many advances in understanding suicide risk in recent decades, our ability to predict suicide is no better now than it was 50 years ago. There are many potential explanations for this lack of progress, but the absence, until recently, of comprehensive theoretical models that predict the emergence of suicidal ideation distinct from the transition between suicidal ideation and suicide attempts/suicide is key to this lack of progress. The current article presents the integrated motivational–volitional (IMV) model of suicidal behaviour, one such theoretical model. We propose that defeat and entrapment drive the emergence of suicidal ideation and that a group of factors, entitled volitional moderators (VMs), govern the transition from suicidal ideation to suicidal behaviour. According to the IMV model, VMs include access to the means of suicide, exposure to suicidal behaviour, capability for suicide (fearlessness about death and increased physical pain tolerance), planning, impulsivity, mental imagery and past suicidal behaviour. In this article, we describe the theoretical origins of the IMV model, the key premises underpinning the model, empirical tests of the model and future research directions.

An initial investigation of nonsuicidal self-injury among male and female survivors of military sexual trauma

Combat veterans are at risk for several adverse outcomes such as posttraumatic stress disorder (PTSD), depression, hazardous alcohol use, and most critically, suicidal behaviors. The high rate of suicide in veterans has been understood as a correlate of PTSD and depression, but it is possible that certain specific types of combat experiences may lead to suicidal behaviors. Acts committed by veterans in the context of war such as killing may evoke a "moral injury," which leads to thoughts of ending one's life. The present exploratory research examined relationships between combat experiences and suicidal ideation (SI) and PTSD in a sample of 68 Operations Enduring Freedom and Iraqi Freedom (OEF/OIF) veterans (91% male, mean age = 32.31 years) who had screened positive for alcohol misuse. We examined firing a weapon/killing in combat (Firing/Killing) and killing in combat (Killing) alone as predictors of SI and PTSD severity in both the full sample and men only. Firing/Killing were associated with SI for the full sample and men only, and Killing showed a trend toward significance in predicting SI. Hierarchical regression analyses suggested that Firing/Killing did not predict PTSD for the full sample or men only, but Killing was predictive of PTSD for both samples. These results indicate that there may be differences in Firing/Killing and Killing alone in OEF/OIF veterans who screened positive for alcohol misuse. Thorough screening of combat experiences and addressing moral injury in returning combat veterans may help reduce high rates of suicide and PTSD. (PsycINFO Database Record

Disturbed sleep is a hallmark feature of posttraumatic stress disorder (PTSD). However, few studies have examined sleep objectively in individuals with PTSD compared to trauma-exposed controls. This study used wrist actigraphy to measure and compare sleep patterns in trauma-exposed Australian Vietnam veterans (VV) with and without PTSD. Trauma-exposed Australian VV with and without PTSD were recruited from the PTSD Initiative. VV wore wrist accelerometers over 14 days and completed daily sleep diaries. Sleep parameters were compared between groups including sleep latency (SL), time in bed (TIB), total sleep time (TST), wake after sleep onset (WASO), and movement index (MI). Night-to-night and overall within-individual variability were assessed by root mean squared successive differences and comparison of individual standard deviations. Correlations between sleep diary (self-reported) and wrist actigraphy (objective) variables were also assessed. A total of 40 male VV (20 with PTSD) participated in the study. We found no difference in sleep patterns determined by wrist actigraphy between groups with the exception of reduced SL in VV with PTSD (3.9 ± 0.9 versus 4.9 ± 1.4 minutes, P < .05). Overall within-individual variability was significantly greater in VV with PTSD for TIB, TST, WASO, and MI. Self-reported and objective TST and WASO were more strongly correlated in VV without PTSD than those with PTSD. Although there were no significant differences in sleep parameters, VV with PTSD had increased within-individual overall sleep variability and reduced correlation between self-reported and objective sleep parameters compared to trauma-exposed controls. Further evaluation of extended sleep patterns by actigraphy in VV with PTSD is warranted.

Post-traumatic stress disorder (PTSD) is a major health concern among the U.S. military population, affecting up to 12% to 24% of veterans returning from Iraq and Afghanistan. Sleep disturbances, neuroticism, and childhood trauma have all been associated with the development of PTSD in military populations, especially in relation to combat experiences. The effects of disrupted sleep and post-traumatic stress can affect the physical well-being of soldier and sailors in the field and impact them for years after deployment. This study aimed to evaluate the relationship between self-reported measures of combat experiences, PTSD symptoms, sleep, neuroticism, and childhood adversity in an active duty military population. 972 U.S. Navy Sailors serving in Afghanistan were given anonymous surveys that assess scales of combat stressors, PTSD symptoms, sleep problems, neuroticism, adverse child experiences (ACEs), and other covariates. Sleep disturbances were hypothesized as moderators, having an indirect effect on the relationship between combat experiences and PTSD symptoms. Neuroticism scores and ACEs were proposed as moderators of the combat-PTSD symptom relationship. Mediation and moderation models were developed and tested using logistic regressions. Increased number of combat experiences was found to be a significant predictor of PTSD, even when adjusting for all covariates (p < 0.05). Consistent with partial mediation, nightmares had an indirect effect on the relationship between combat experiences and PTSD symptoms in the final model (path coefficient = 0.233, 95% confidence interval = 0.036, 0.483). Neuroticism was an independent predictor of PTSD symptoms (p < 0.001), but the interaction of combat and neuroticism did not predict symptoms of PTSD. ACEs did not have a significant impact in the model as either an independent predictor or a moderating factor. These results indicate that the presence of nightmares may partially explain how traumatic combat experiences lead to the development of PTSD. The study also reaffirms neuroticism as risk factor for developing PTSD symptoms. These findings highlight the importance of sleep hygiene and operational stress models in combat situations and may help stress control professionals address risk factors associated with PTSD symptoms.

Examination of changes in suicide cognitions during an intensive treatment program for posttraumatic stress disorder.

Longitudinal relationships of insomnia, nightmares, and PTSD severity in recent combat veterans

With approximately 20 veteran suicide deaths per day, suicidal ideation (SI) among veterans is an important concern. Posttraumatic stress disorder (PTSD) is associated with SI among veterans, yet mechanisms of this relationship remain unclear. Negative posttraumatic cognitions contribute to the development and maintenance of PTSD, yet no studies have prospectively examined the relationship between posttraumatic cognitions and SI. Veterans (N = 177; 66% Male) participating in a 3-week intensive outpatient program for PTSD completed assessments of PTSD severity, depressive symptoms, SI, and posttraumatic cognitions. Negative posttraumatic cognitions about the self significantly predicted SI at posttreatment, controlling for pretreatment levels of SI, depression, and PTSD symptom severity. Self-blame and negative posttraumatic cognitions about others/world did not predict SI prospectively. Negative posttraumatic cognitions about the self appear to be an important factor in the manifestation of SI among veterans with PTSD and should be monitored as a potential indicator of suicide risk.