Comparing posttraumatic stress disorder's symptom structure between deployed and nondeployed veterans.

We tested two empirically validated 4-factor models of posttraumatic stress disorder (PTSD) symptoms using the PTSD Checklist: King, Leskin, King, and Weathers' (1998) model including reexperiencing, avoidance, emotional numbing, and hyperarousal factors, and Simms, Watson, and Doebbeling's (2002) model including reexperiencing, avoidance, dysphoria, and hyperarousal. Our aim was to determine which fit better in two groups of military veterans: peacekeepers previously deployed to a war zone (deployed group) and those trained for peacekeeping operations who were not deployed (nondeployed group). We compared the groups using multigroup confirmatory factor analysis. Adequate model fit was demonstrated among the nondeployed group, with no significant difference between King et al.'s (1998) model (separating avoidance and numbing) and Simms et al.'s (2002) similar model involving a dysphoria factor. A better fitting factor structure consistent with Simms et al.'s (2002) model was found in the deployed group. Comprehensive measurement invariance testing demonstrated significant differences between the deployed and nondeployed groups on all structural parameters, except observed variable intercepts (thus indicating similarities only in PTSD item severity). These findings add to researchers' understanding of PTSD's factor structure, given the revision of PTSD that will appear in the forthcoming 5th edition of the Diagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 2010)—namely, that the factor structure may be quite different between groups with and without exposure to major traumatic events. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Rapid treatment of PTSD: Why psychological exposure with acupoint tapping may be effective.

Combining brief psychological exposure with the manual stimulation of acupuncture points (acupoints) in the treatment of posttraumatic stress disorder (PTSD) and other emotional conditions is an intervention strategy that integrates established clinical principles with methods derived from healing traditions of Eastern cultures. Two randomized controlled trials and six outcome studies using standardized pre- and posttreatment measures with military veterans, disaster survivors, and other traumatized individuals corroborate anecdotal reports and systematic clinical observation in suggesting that (a) tapping on selected acupoints, (b) during imaginal exposure, (c) quickly and permanently reduces maladaptive fear responses to traumatic memories and related cues. The approach has been controversial. This is in part because the mechanisms by which stimulating acupoints can contribute to the treatment of serious or longstanding psychological disorders have not been established. Speculating on such mechanisms, the current paper suggests that adding acupoint stimulation to brief psychological exposure is unusually effective in its speed and power because deactivating signals are sent directly to the amygdala, resulting in the rapid attenuation of threat responses to innocuous stimuli. This formulation and the preliminary evidence supporting it could, if confirmed, lead to more powerful exposure protocols for treating PTSD. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Heterogeneity in the latent structure of PTSD symptoms among Canadian veterans.

The current study used factor mixture modeling to identify heterogeneity (i.e., latent classes) in 2 well-supported models of posttraumatic stress disorder's (PTSD) factor structure. Data were analyzed from a clinical sample of 405 Canadian veterans evaluated for PTSD. Results were consistent with our hypotheses. Each PTSD factor model was best represented by 2 latent classes of participants, differing with respect to PTSD symptom severity. Furthermore, classes were most strongly distinguished by factor scores related to emotional numbing or dysphoria. For both factor models, class membership was significantly predicted by age and depression diagnosis. Implications of these findings are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Symptom Patterns and Service Use Among African American and Caucasian Veterans With Combat-Related PTSD.

African American (N = 57) and Caucasian (N = 76) combat veterans with posttraumatic stress disorder (PTSD) at a Veterans Affairs (VA) outpatient PTSD treatment clinic were compared on variables related to clinical symptoms and VA service use. Groups were compared on relevant interview (e.g., Clinician Administered PTSD Scale) and self-report measures (e.g., Minnesota Multiphasic Personality Inventory-2). Groups were also compared on demographics, psychiatric comorbidity, VA service use, and disability status. Results revealed few significant between-groups differences, providing further evidence that African American and Caucasian veterans with PTSD do not differ in manifestation of the syndrome or in use of VA services and benefits. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Treatment of active-duty military with PTSD in primary care: Early findings.

The study presents early findings from an ongoing pilot study of a cognitive–behavioral treatment for assisting active-duty military members with deployment-related posttraumatic stress disorder (PTSD) designed for use by psychologists working in an integrated primary care clinic. Treatment protocol is based primarily on Prolonged Exposure but also includes elements of Cognitive Processing Therapy that were adapted for use in primary care. Individuals were recruited from the population of patients consulted to the psychologist by primary care providers during routine clinical care. The 15 participants include active-duty or activated reserve Operation Iraqi Freedom and Operation Enduring Freedom veterans seeking help for deployment-related PTSD symptoms, with a PTSD Checklist-Military Version score 32, and interest in treatment for PTSD in primary care. Baseline and 1-month posttreatment follow-up evaluations were conducted by an independent evaluator. Five participants (33%) dropped out of the intervention after one or two appointments. Using the last observation carried forward for intent-to-treat analyses, the results showed that PTSD severity, depression, and global mental health functioning all significantly improved with the intervention. Fifty percent of treatment completers no longer met criteria for PTSD. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

All Symptoms Are Not Created Equal: The Prominent Role of Hyperarousal in the Natural Course of Posttraumatic Psychological Distress.

This 3-wave longitudinal study examined the natural course of posttraumatic stress disorder symptoms using data collected from young adult survivors of community violence. Three key findings emerged. 1. Mean levels of distress for each symptom cluster decreased over time, with reexperiencing decreasing most rapidly. 2. Cross-lagged panel analysis revealed that hyperarousal strongly influences, but is not generally influenced by, other symptoms clusters. 3. Trajectory analysis demonstrated that respondents for whom hyperarousal was the most pronounced baseline symptom showed lower overall symptom improvement relative to trauma exposed counterparts for whom hyperarousal was a less prominent early symptom. Implications for theory, research, and clinical practice are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A Longitudinal Study of Retirement in Older Male Veterans.

In this study, the authors examined the effect of retirement on psychological and physical symptoms in 404 older male veterans who were taking part in an ongoing longitudinal study. Hierarchical linear modeling was used to analyze symptom trajectories from preretirement, peri-retirement, and postretirement periods in veterans with either lifetime full or partial posttraumatic stress disorder (PTSD), trauma exposure only, or no traumatic exposure. As expected, the PTSD group experienced greater increases in psychological and physical symptoms during retirement, relative to the other groups. Retirement due to poor health in the PTSD group did not account for the findings regarding physical symptoms. Results indicate that clinicians should recognize and address the potential for older individuals with PTSD to experience difficulties during retirement. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A clinician's guide to PTSD treatments for returning veterans.

What options are available to mental health providers helping clients with posttraumatic stress disorder (PTSD)? In this paper we review many of the current pharmacological and psychological interventions available to help prevent and treat PTSD with an emphasis on combat-related traumas and veteran populations. There is strong evidence supporting the use of several therapies including prolonged exposure (PE), eye movement desensitization and reprocessing (EMDR), and cognitive processing therapies (CPT), with PE possessing the most empirical evidence in favor of its efficacy. There have been relatively fewer studies of nonexposure based modalities (e.g., psychodynamic, interpersonal, and dialectical behavior therapy perspectives), but there is no evidence that these treatments are less effective. Pharmacotherapy is promising (especially paroxetine, sertraline, and venlafaxine), but more research comparing the relative merits of medication vs. psychotherapy and the efficacy of combined treatments is needed. Given the recent influx of combat-related traumas due to ongoing conflicts in Iraq and Afghanistan, there is clearly an urgent need to conduct more randomized clinical trials research and effectiveness studies in military and Department of Veterans Affairs PTSD samples. Finally, we provide references to a number of PTSD treatment manuals and propose several recommendations to help guide clinicians' treatment selections. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Anger, hostility, and posttraumatic stress disorder in trauma-exposed adults: A meta-analysis.

This meta-analysis synthesizes the available data on the strength of association between anger and posttraumatic stress disorder (PTSD) and between hostility and PTSD, covering 39 studies with trauma-exposed adults. Effect sizes did not differ for anger and hostility, which could therefore be combined; effect sizes for anger expression variables were analyzed separately. The analyses revealed large effects. The weighted mean effect size (r) was .48 for anger-hostility, .29 for anger out, .53 for anger in, and -.44 for anger control. Moderator analyses were conducted for anger-hostility, showing that effect sizes were substantially larger with increasing time since the event and that effect sizes were larger in samples with military war experience than in samples that had experienced other types of traumatic events. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reappraising the link between peritraumatic dissociation and PTSD symptom severity: Evidence from a longitudinal study of community violence survivors.

Cross-lagged panel analysis of longitudinal data collected from young adult survivors of community violence was used to examine the relationship between recall of peritraumatic dissociation and posttraumatic stress disorder (PTSD) symptom severity. Recollections of peritraumatic dissociation assessed within days of exposure differed from recollections measured at 3- and 12-month follow-up interviews. Peritraumatic dissociation was highly correlated with PTSD symptoms within each wave of data collection. Baseline recollections of peritraumatic dissociation were not predictive of follow-up PTSD symptom severity after controlling for baseline PTSD symptom severity. This pattern of results replicates previous work demonstrating a correlation between peritraumatic dissociation and subsequent symptom severity. However, findings are not consistent with the prevailing view that peritraumatic dissociation leads to increased PTSD symptom severity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Teaching trauma-focused exposure therapy for PTSD: Critical clinical lessons for novice exposure therapists.

Over the past 10 years, our experiences delivering exposure therapy and teaching clinicians to deliver exposure therapy for posttraumatic stress disorder (PTSD) have taught us some important lessons. We will focus on lessons learned as we have attended to clinicians' experiences as they begin to implement and apply the therapy. Specifically, we highlight common therapist expectations including the beliefs that the exposure therapy requires a new set of clinical skills, therapists themselves will experience a high level of distress hearing about traumatic events, and clients will become overly distressed. We then discuss common clinical challenges in the delivery of exposure therapy and illustrate them with case examples. The challenges addressed include finding the appropriate level of therapist involvement in session, handling client distress during treatment, targeting in-session covert avoidance, and helping the client shift from being trauma-focused to being more present and future oriented. Clinicians training exposure therapists and therapists new to the implementation of exposure therapy for PTSD should find this practical discussion of common expectations and initial clinical challenges reassuring and clinically useful. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Trajectories of PTSD and substance use disorders in a longitudinal study of personality disorders.

This study investigated the co-occurrence of posttraumatic stress disorder (PTSD) and substance use disorders (SUDs) in a sample (N = 668) recruited for personality disorders and followed longitudinally as part of the Collaborative Longitudinal Personality Disorders Study. The study both examined rates of co-occurring disorders at baseline and temporal relationships between PTSD and substance use disorders over 4 years. Subjects with a lifetime history of PTSD at baseline had significantly higher rates of SUDs (both alcohol and drug) than subjects without PTSD. Latent class growth analysis, a relatively novel approach used to analyze trajectories and identify homogeneous subgroups of participant on the basis of probabilities of PTSD and SUD over time, identified 6 classes, which were compared with respect to a set of functioning and personality variables. The most consistent differences were observed between the group that displayed low probabilities of both SUD and PTSD and the group that displayed high probabilities of both. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The structure of PTSD among two cohorts of returning soldiers: Before, during, and following deployment to Iraq.

Evidence suggests either a four-factor emotional numbing or dysphoria model likely reflects the underlying structure of posttraumatic stress disorder (PTSD). Questions remain as to which of these structures best represents PTSD, how the structure changes with time, the applicability of models to returning veterans, and the validity of the symptom clusters. The present study addresses these questions among two longitudinal samples of National Guard soldiers assessed prior to, during, and following a combat deployment to Iraq. Findings support a four-factor intercorrelated dysphoria model of PTSD that remains stable across samples and time points. Differential associations were observed among PTSD symptom clusters over time and between symptom clusters and both depression and combat exposure, supporting important distinctions between symptom clusters. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Longitudinal analysis of the relationship between symptoms and quality of life in veterans treated for posttraumatic stress disorder.

This study examined how change in posttraumatic stress disorder (PTSD) symptoms relates to change in quality of life. The sample consisted of 325 male Vietnam veterans with chronic PTSD who participated in a randomized trial of group psychotherapy. Latent growth modeling was used to test for synchronous effects of PTSD symptom change on psychosocial and physical health-related quality of life within the same time period and lagged effects of initial PTSD symptom change on later change in quality of life. PTSD symptoms were associated with reduced quality of life before treatment. There were synchronous effects of symptom change on change in quality of life but no significant lagged effects. Results indicate the importance of measuring quality of life in future investigations of PTSD treatment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Treatment of Posttraumatic Stress Disorder in Military and Veteran Populations.

While concerns about the psychological effects of war are not new, only recently has systematic attention been paid to such problems among past and present military personnel. There is increasing recognition that mental health has serious implications for operational performance, retention, and compensation. Although little controlled research exists with this population, preliminary evidence suggests that psychological treatments for posttraumatic stress disorder may be beneficial, albeit less so than for civilian populations. This article reviews evidence for each of several psychological treatment stages: stabilization and engagement, psychoeducation, symptom management, prolonged exposure, cognitive restructuring, and relapse prevention, with particular reference to the clinical issues raised by military personnel. Possible explanations for reduced treatment effects in this population compared with civilians are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Risk Factors for Course of Posttraumatic Stress Disorder Among Vietnam Veterans: A 14-Year Follow-Up of American Legionnaires.

Risk factors affecting the course of posttraumatic stress disorder (PTSD) are poorly understood. As part of a larger study on characterizing exposure to herbicides in Vietnam, the authors investigated this issue in a random sample of 1,377 American Legionnaires who had served in Southeast Asia during the Vietnam War and were followed over a 14-year period. High combat exposure, perceived negative community attitudes at homecoming, minority race, depression symptoms at Time 1, and more anger at Time 1 predicted a more chronic course. Community involvement at Time 1 was protective and associated with decreased risk at Time 2. Discomfort in disclosing Vietnam experiences was associated with an increased risk for developing PTSD but did not predict its course. Combat exposure predicted PTSD course more strongly than any other risk factor. Findings suggest recovery from PTSD is significantly influenced by perceived social support. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A prospective examination of PTSD symptoms as risk factors for subsequent exposure to potentially traumatic events among women.

Previous research has suggested that both exposure to potentially traumatic events (PTEs) and emotional reactions to such events act as risk factors for subsequent exposure. Although some studies have implicated posttraumatic stress disorder (PTSD) symptoms as risk factors, extant research suffers from a number of methodological limitations, including the use of cross-sectional designs and student populations. The present study sought to address these limitations using a 2-year, 3-wave national probability household sample of 2,863 adult women. After controlling for demographic characteristics, prior exposure to PTEs, and Wave 1 depression and substance abuse, PTSD reexperiencing symptoms at Wave 1 predicted subsequent exposure to interpersonal violence victimization (IPVV) perpetrated by a nonintimate perpetrator; however, PTSD symptoms did not predict intimate partner IPVV. In addition, PTSD hyperarousal symptoms were unique predictors of subsequent exposure to other traumatic stressors. Findings suggest that efforts to prevent PTEs should focus attention on both prior exposure and PTSD symptoms in response to such exposure. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Type D personality and the development of PTSD symptoms: A prospective study.

Psychological trauma and prolonged stress may cause mental disorders such as posttraumatic stress disorder (PTSD). Pretrauma personality is an important determinant of posttraumatic adjustment. Specifically, trait neuroticism has been identified as a risk factor for PTSD. Additionally, the combination of high negative affectivity or neuroticism with marked social inhibition or introversion, also called Type D personality (Denollet, 2000), may compose a risk factor for PTSD. There is no research available that examined pretrauma Type D personality in relation to PTSD. The present study examined the predictive validity of the Type D personality construct in a sample of Dutch soldiers. Data were collected prior to and 6 months after military deployment to Afghanistan. Separate multiple regression analyses were performed to examine the predictive validity of Type D personality. First, Type D personality was defined as the interaction between negative affect and social inhibition (Na × Si). In a second analysis, Type D was defined following cutoff criteria recommended by Denollet (2000). Results showed that negative affectivity was a significant predictor of PTSD symptoms. Social inhibition and the interaction Na × Si did not add to the amount of explained variance in postdeployment PTSD scores over the effects of childhood abuse, negative affectivity, and prior psychological symptoms. A second analysis showed that Type D personality (dichotomous) did not add to the amount of explained variance in postdeployment PTSD scores over the effects of childhood abuse, and prior psychological symptoms. Therefore, Type D personality appears to be of limited value to explain development of combat-related PTSD symptoms. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Anxiety sensitivity and PTSD symptom severity are reciprocally related: Evidence from a longitudinal study of physical trauma survivors.

Cross-lagged panel analysis of interview data collected from survivors of traumatic physical injury (N = 677) was used to examine the temporal relationship between anxiety sensitivity and posttraumatic stress disorder (PTSD) symptom severity. The 2 constructs were assessed at 3 time points: within days of physical injury, at 6-month follow-up, and at 12-month follow-up. Results indicated that anxiety sensitivity and PTSD symptom severity were reciprocally related such that anxiety sensitivity predicted subsequent PTSD symptom severity, and symptom severity predicted later anxiety sensitivity. Findings have both theoretical and clinical implications. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparative efficacy, speed, and adverse effects of three PTSD treatments: Exposure therapy, EMDR, and relaxation training.

The authors examined the efficacy, speed, and incidence of symptom worsening for 3 treatments of posttraumatic stress disorder (PTSD): prolonged exposure, relaxation training, or eye movement desensitization and reprocessing (EMDR; N=60). Treatments did not differ in attrition, in the incidence of symptom worsening, or in their effects on numbing and hyperarousal symptoms. Compared with EMDR and relaxation training, exposure therapy (a) produced significantly larger reductions in avoidance and reexperiencing symptoms, (b) tended to be faster at reducing avoidance, and (c) tended to yield a greater proportion of participants who no longer met criteria for PTSD after treatment. EMDR and relaxation did not differ from one another in speed or efficacy. (PsycINFO Database Record (c) 2010 APA, all rights reserved)