The impact of substance use on posttraumatic stress disorder symptoms and treatment discontinuation.

This study examined the impact of ongoing substance use during posttraumatic stress disorder (PTSD) and substance use disorder (SUD) treatment on PTSD symptoms and treatment discontinuation. The study represents a secondary analysis of U.S. military veterans (N = 183) who participated in a randomized clinical trial for the treatment of both PTSD and SUD. Veterans mostly identified as Black (53.8%) or White (41.9%) and male (92.4%). Substance use, PTSD symptoms, and treatment discontinuation were measured at 4-week intervals throughout treatment. Predictors were the percentage of days with alcohol, cannabis, and other substance use (primarily cocaine and opioids) and the average number of alcoholic drinks per drinking day. Outcomes were PTSD symptoms and treatment discontinuation at concurrent and prospective assessments. Multilevel models accounted for the nested structure of the longitudinal data. Alcohol, cannabis, and other substance use did not predict PTSD symptoms or treatment discontinuation prospectively. Concurrently, we observed that as a participant's percentage of drinking days increased by 34.7% (i.e., 1 standard deviation), PTSD symptoms during the same period were 0.07 standard deviations higher (i.e., 1 point on the PCL), B = 0.03, p = .033. No other substances were related to PTSD symptoms concurrently. The findings demonstrate that PTSD symptoms improved regardless of substance use during exposure-based PTSD and SUD treatment, and treatment discontinuation was not associated with substance use. This study suggests that substance use during treatment cannot directly explain the poorer treatment outcomes observed in the literature on comorbid PTSD/SUD compared to PTSD-only populations.

Clusters Based on Within-Treatment Symptom Trajectories as Predictors of Dropout in Treatment for Posttraumatic Stress Disorder and Substance Use Disorder.

Objective: Dropout rates are high in treatments for co-occurring posttraumatic stress disorder (PTSD) and substance use disorders (SUDs). We examined dropout predictors in PTSD-SUD treatment. Methods: Participants were 183 veterans receiving integrated or phased motivational enhancement therapy and prolonged exposure. Using survival models, we examined demographics and symptom trajectories as dropout predictors. Using latent trajectory analysis, we incorporated clusters based on symptom trajectories to improve dropout prediction. Results: Hispanic ethnicity (integrated arm), Black or African American race (phased arm), and younger age (phased arm) predicted dropout. Clusters based on PTSD and substance use trajectories improved dropout prediction. In integrated treatment, participants with consistently-high use and low-and-improving use had the highest dropout. In phased treatment, participants with the highest and lowest PTSD symptoms had lower dropout; participants with the lowest substance use had higher dropout. Conclusions: Identifying within-treatment symptom trajectories associated with dropout can help clinicians intervene to maximize outcomes. ClinicalTrials.gov Identifier: NCT01211106.

The role of symptom accommodation in trauma-focused treatment engagement and response.

Although trauma-focused treatments (TFTs) are generally effective, not all patients improve. Symptom accommodation (i.e., altering one's behavior in response to another's symptoms) by loved ones may be particularly relevant to TFT treatment response and engagement. We examined the role of symptom accommodation by support persons (SPs) in veterans' PTSD treatment response, including the mediating role of treatment engagement and the moderating role of relationship strain. Veterans engaging in prolonged exposure or cognitive processing therapy and a loved one (N = 172 dyads) were sampled at two time points approximately four months apart. Measures of treatment engagement (i.e., highest session completed from the treatment protocol and homework completion) were obtained from hospital records. We found that relationship strain moderated the effect of symptom accommodation on treatment response, ∆R2 = .02. Specifically, Time 1 (T1) accommodation predicted poorer treatment response (i.e., Time 2 [T2] PTSD symptom severity, controlling for T1 symptoms) among veterans who reported below-average relationship strain only. Additionally, symptom accommodation was indirectly related to treatment response such that T1 accommodation predicted higher T2 PTSD symptom severity specifically through reduced homework completion, ß = .01. The findings suggest that attending to accommodating behaviors of veterans' supportive partners may be an important way to boost both engagement in and response to TFTs for PTSD.

Yoga Practice Among Veterans With and Without Chronic Pain: A Mixed Methods Study.

OBJECTIVES: The primary aim of this study was to examine differences in yoga practice between persons with and without chronic pain. Secondarily, we describe use of the Essential Properties of Yoga Questionnaire, Short Form (EPYQ-SF) for self-report. DESIGN: Participants were members of an existing cohort of veterans who completed a 2015-2016 survey focused on pain and nonpharmacological health practices. Cohort members who reported yoga in the past year [n=174 (9.4%) of 1850] were eligible for the present study, which used multiple-contact mixed-mode survey methodology to collect data on yoga practices. The EPYQ-SF was used to assess properties and context of yoga practice. Practice patterns were compared for participants with and without chronic pain. To explore potential reasons for reported yoga practice patterns, focused semistructured interviews were conducted with a subset of participants. RESULTS: Of 174 participants contacted, 141 (82%) returned the yoga questionnaire and 110 (78% of respondents) were still practicing yoga. Among yoga practitioners, 41 (37%) had chronic pain. Practitioners with chronic pain reported gentler (2.8 vs. 3.1, 5-point scale) and less active (2.9 vs. 3.3) yoga practice than those without. Those with chronic pain attended yoga studios less frequently and reported shorter yoga practices than those without. Most yoga practice was self-directed and at home. CONCLUSIONS: Differences in yoga practice of persons with and without chronic pain have implications for implementation of yoga interventions for chronic pain. Future interventions should focus on alternative individual delivery formats or addressing barriers to group practice among people with chronic pain.

Learning to Apply Mindfulness to Pain (LAMP): Design for a Pragmatic Clinical Trial of Two Mindfulness-Based Interventions for Chronic Pain.

BACKGROUND: Mindfulness-based interventions (MBIs) are evidence-based nonpharmacological treatments for treating chronic pain. However, the predominant MBI, mindfulness-based stress reduction, has features that pose significant implementation barriers. OBJECTIVES: This study will test two approaches to delivering MBIs for improving Veterans' chronic pain and mental health comorbidities. These two approaches address key implementation barriers. METHODS: We will conduct a four-site, three-arm pragmatic randomized controlled trial, Learning to Apply Mindfulness to Pain (LAMP), to test the effectiveness of two MBIs at improving pain and mental health comorbidities. Mobile+Group LAMP consists of prerecorded modules presented by a mindfulness instructor that are viewed in an online group setting and interspersed with discussions led by a facilitator. Mobile LAMP consists of the same prerecorded modules but does not include a group component. We will test whether either of these MBIs will be more effective than usual care at improving chronic pain and whether the Mobile+Group LAMP will be more effective than Mobile LAMP at improving chronic pain. Comparisons for the primary hypotheses will be conducted with continuous outcomes (Brief Pain Inventory interference score) repeated at 10 weeks, 6 months, and 12 months. The secondary hypotheses are that Mobile+Group LAMP and Mobile LAMP will be more effective than usual care at improving secondary outcomes (e.g., post-traumatic stress disorder, depression). We will also confirm the comparisons for the primary and secondary hypotheses in gender-specific strata. IMPLICATIONS: This trial is expected to result in two approaches for delivering MBIs that will optimize engagement, adherence, and sustainability and be able to reach large numbers of Veterans.

Patterns of conventional and complementary non-pharmacological health practice use by US military veterans: a cross-sectional latent class analysis.

BACKGROUND: Non-pharmacological therapies and practices are commonly used for both health maintenance and management of chronic disease. Patterns and reasons for use of health practices may identify clinically meaningful subgroups of users. The objectives of this study were to identify classes of self-reported use of conventional and complementary non-pharmacological health practices using latent class analysis and estimate associations of participant characteristics with class membership. METHODS: A mailed survey (October 2015 to September 2016) of Minnesota National Guard Veterans from a longitudinal cohort (n = 1850) assessed current pain, self-reported overall health, mental health, substance use, personality traits, and health practice use. We developed the Health Practices Inventory, a self-report instrument assessing use of 19 common conventional and complementary non-pharmacological health-related practices. Latent class analysis was used to identify subgroups of health practice users, based on responses to the HPI. Participants were assigned to their maximum-likelihood class, which was used as the outcome in multinomial logistic regression to examine associations of participant characteristics with latent class membership. RESULTS: Half of the sample used non-pharmacological health practices. Six classes of users were identified. "Low use" (50%) had low rates of health practice use. "Exercise" (23%) had high exercise use. "Psychotherapy" (6%) had high use of psychotherapy and support groups. "Manual therapies" (12%) had high use of chiropractic, physical therapy, and massage. "Mindfulness" (5%) had high use of mindfulness and relaxation practice. "Multimodal" (4%) had high use of most practices. Use of manual therapies (chiropractic, acupuncture, physical therapy, massage) was associated with chronic pain and female sex. Characteristics that predict use patterns varied by class. Use of self-directed practices (e.g., aerobic exercise, yoga) was associated with the personality trait of absorption (openness to experience). Use of psychotherapy was associated with higher rates of psychological distress. CONCLUSIONS: These observed patterns of use of non-pharmacological health practices show that functionally similar practices are being used together and suggest a meaningful classification of health practices based on self-directed/active and practitioner-delivered. Notably, there is considerable overlap in users of complementary and conventional practices.

Resilience and Posttraumatic Stress Disorder Symptoms in National Guard Soldiers Deployed to Iraq: A Prospective Study of Latent Class Trajectories and Their Predictors.

This study examined the prospective course of posttraumatic stress disorder (PTSD) symptoms in a cohort of National Guard soldiers (N = 522) deployed to combat operations in Iraq. Participants were assessed 4 times: 1 month before deployment, 2-3 months after returning from deployment, 1 year later, and 2 years postdeployment. Growth mixture modeling revealed 3 distinct trajectories: low-stable symptoms, resilient, 76.4%; new-onset symptoms, 14.2%; and chronic distress, 9.4%. Relative to the resilient class, membership in both the new-onset symptoms and chronic distress trajectory classes was predicted by negative emotionality/neuroticism, odds ratios (ORs) = 1.09, 95% CI [1.02, 1.17], and OR = 1.22, 95% CI [1.09,1.35], respectively; and combat exposure, OR = 1.07, 95% CI [1.02, 1.12], and OR = 1.12, 95% CI [1.02, 1.24], respectively. Membership in the new-onset trajectory class was predicted by predeployment military preparedness, OR = 0.95, 95% CI [0.91, 0.98], perceived threat during deployment, OR = 1.07, 95% CI [1.03, 1.10], and stressful life events following deployment, OR = 1.44, 95% CI [1.05, 1.96]. Prior deployment to Iraq or Afghanistan, OR = 3.85, 95% CI [1.72, 8.69], predeployment depression, OR = 1.27, 95% CI [1.20, 1.36], and predeployment concerns about a deployment's impact on civilian/family life, OR = 1.09, 95% CI [1.02, 1.16], distinguished the chronic distress group relative to the resilient group. Identifying predeployment vulnerability and postdeployment contextual factors provides insight for future efforts to bolster resilience, prevent, and treat posttraumatic symptoms.

Predictors of PTSD Symptom Change Among Outpatients in the U.S. Department of Veterans Affairs Health Care System.

Although the U.S. Department of Veterans Affairs (VA) has prioritized care for posttraumatic stress disorder (PTSD), many patients with PTSD remain symptomatic. Patterns of PTSD symptom change are not well understood. Thus, the current study was designed to categorize and investigate potential predictors of symptom trajectories in patients with PTSD. The sample comprised 2,237 VA patients who were diagnosed with PTSD in 2013 and completed at least 4 PTSD Checklist (PCL) assessments over 12 weeks. Latent trajectory analysis was used to identify latent classes of patients based on PCL scores. Based on model fit indices, 3 trajectories were identified. Compared to patients in the mild-improving trajectory (21.9%), those in the severe-stable trajectory (34.3%) were more likely to be male, relative risk ratio (RRR) = 1.48, 95% CI [1.08, 2.02]; non-White, RRR = 1.77, 95% CI [1.33, 2.35]; Hispanic, RRR = 2.07, 95% CI [1.40, 3.04]; and have comorbid depression, RRR = 1.58, 95% CI [1.25, 1.99]. Compared to patients in the moderate-improving trajectory (43.8%), those in the severe-stable trajectory were more likely to have sleep disorders, RRR = 1.25, 95% CI [1.01, 1.55]. Our findings suggest that male veterans, minority veterans, and veterans with certain comorbid conditions may be less likely to achieve improved PTSD symptoms. Targeted efforts are needed to improve outcomes for PTSD patients on nonremitting trajectories and to improve the consistency of PTSD assessment across the VA health care system.

Social Causation Versus Social Erosion: Comparisons of Causal Models for Relations Between Support and PTSD Symptoms.

Social support is a robust correlate of posttraumatic stress disorder (PTSD) symptoms and of general psychological distress (Ozer, Best, Lipsey, & Weiss, 2003). The nature of the causal relationship between support and PTSD remains the subject of debate, with 2 models, social erosion and social causation, often used to explain findings. Despite extensive research using these models, no studies of which we are aware have included tests of both models within the same series of analyses, across more than 2 time points, in veterans. These competing models were tested in a sample of National Guard soldiers (N = 521) who completed measures of perceived social support and the PTSD Checklist-Military version (Weathers, Litz, Herman, Huska, & Keane, 1993) at 3 months, 15 months, and 27 months following a combat deployment to Iraq. Analyses were run separately for overall PTSD symptoms and the PTSD components of intrusion, trauma-avoidance, dysphoria, and hyperarousal. Both the social erosion (ßs ranging from -.10 to -.19) and social causation (ßs ranging from -.08 to -.13) hypotheses were supported. Results suggested PTSD-specific symptom dimensions may both erode and be influenced by social support, whereas general psychological distress erodes social support. Implications for clinical intervention and research are discussed.

Factors associated with inconsistency in self-reported mild traumatic brain injury over time among military personnel in Iraq.

BACKGROUND: Estimates of the prevalence of mild traumatic brain injury (mTBI) among military personnel and combat veterans rely almost exclusively on retrospective self-reports; however, reliability of these reports has received little attention. AIMS: To examine the consistency of reporting of mTBI over time and identify factors associated with inconsistent reporting. METHOD: A longitudinal cohort of 948 US National Guard Soldiers deployed to Iraq completed self-report questionnaire screening for mTBI and psychological symptoms while in-theatre 1 month before returning home (time 1, T1) and 1 year later (time 2, T2). RESULTS: Most respondents (n = 811, 85.5%) were consistent in their reporting of mTBI across time. Among those who were inconsistent in their reports (n = 137, 14.5%), the majority denied mTBI at T1 and affirmed mTBI at T2 (n = 123, 89.8%). Respondents rarely endorsed mTBI in-theatre and later denied mTBI (n = 14, 10.2% of those with inconsistent reports). Post-deployment post-traumatic stress symptoms and non-specific physical complaints were significantly associated with inconsistent report of mTBI. CONCLUSIONS: Military service members' self-reports of mTBI are generally consistent over time; however, inconsistency in retrospective self-reporting of mTBI status is associated with current post-traumatic stress symptoms and non-specific physical health complaints.

Impact of Deployment-Related Sexual Stressors on Psychiatric Symptoms After Accounting for Predeployment Stressors: Findings From a U.S. National Guard Cohort.

This study used a longitudinal research design to examine the impact of predeployment stressors and deployment-related sexual stressors on self-reported psychiatric symptoms of U.S. National Guard soldiers returning from deployments to Iraq or Afghanistan. Prior to deployment, participants completed measures of depression and posttraumatic stress symptoms, along with an inventory of predeployment stressor experiences. At 3-months postdeployment, participants (468 men, 60 women) again completed self-report measures of psychiatric symptoms, along with an inventory of sexual stressors experienced during deployment. We compared a cross-sectional model of sexual stressors' impact on psychiatric symptoms, in which only postdeployment reports were considered, to a longitudinal model in which we adjusted for participants' predeployment stressors and psychiatric symptoms. No participants reported sexual assault during deployment, though sexual harassment was common. The cross-sectional model suggested that deployment-related sexual stressors were significantly associated with postdeployment depression (R(2) = .11) and posttraumatic stress symptoms (R(2) = .10). Once predeployment factors were taken into consideration, however, sexual stressors were no longer significant. The results did not support the notion of lasting negative impact for low-level sexual stressors (e.g., sexual harassment) during deployment after predeployment stressors are accounted for. Future studies of sexual stressors should consider longitudinal designs.

Mindfulness-Based Stress Reduction for Posttraumatic Stress Disorder Among Veterans: A Randomized Clinical Trial.

IMPORTANCE: Mindfulness-based interventions may be acceptable to veterans who have poor adherence to existing evidence-based treatments for posttraumatic stress disorder (PTSD). OBJECTIVE: To compare mindfulness-based stress reduction with present-centered group therapy for treatment of PTSD. DESIGN, SETTING, AND PARTICIPANTS: Randomized clinical trial of 116 veterans with PTSD recruited at the Minneapolis Veterans Affairs Medical Center from March 2012 to December 2013. Outcomes were assessed before, during, and after treatment and at 2-month follow-up. Data collection was completed on April 22, 2014. INTERVENTIONS: Participants were randomly assigned to receive mindfulness-based stress reduction therapy (n = 58), consisting of 9 sessions (8 weekly 2.5-hour group sessions and a daylong retreat) focused on teaching patients to attend to the present moment in a nonjudgmental, accepting manner; or present-centered group therapy (n = 58), an active-control condition consisting of 9 weekly 1.5-hour group sessions focused on current life problems. MAIN OUTCOMES AND MEASURES: The primary outcome, change in PTSD symptom severity over time, was assessed using the PTSD Checklist (range, 17-85; higher scores indicate greater severity; reduction of 10 or more considered a minimal clinically important difference) at baseline and weeks 3, 6, 9, and 17. Secondary outcomes included PTSD diagnosis and symptom severity assessed by independent evaluators using the Clinician-Administered PTSD Scale along with improvements in depressive symptoms, quality of life, and mindfulness. RESULTS: Participants in the mindfulness-based stress reduction group demonstrated greater improvement in self-reported PTSD symptom severity during treatment (change in mean PTSD Checklist scores from 63.6 to 55.7 vs 58.8 to 55.8 with present-centered group therapy; between-group difference, 4.95; 95% CI, 1.92-7.99; P=.002) and at 2-month follow-up (change in mean scores from 63.6 to 54.4 vs 58.8 to 56.0, respectively; difference, 6.44; 95% CI, 3.34-9.53, P < .001). Although participants in the mindfulness-based stress reduction group were more likely to show clinically significant improvement in self-reported PTSD symptom severity (48.9% vs 28.1% with present-centered group therapy; difference, 20.9%; 95% CI, 2.2%-39.5%; P = .03) at 2-month follow-up, they were no more likely to have loss of PTSD diagnosis (53.3% vs 47.3%, respectively; difference, 6.0%; 95% CI, -14.1% to 26.2%; P = .55). CONCLUSIONS AND RELEVANCE: Among veterans with PTSD, mindfulness-based stress reduction therapy, compared with present-centered group therapy, resulted in a greater decrease in PTSD symptom severity. However, the magnitude of the average improvement suggests a modest effect. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT01548742.

Acceptability of prolonged exposure therapy among U.S. Iraq war veterans with PTSD symptomology.

Despite efforts to increase the availability of prolonged exposure therapy (PE) within the Department of Veterans Affairs, little is known about the acceptability of PE among veteran populations. We queried a sample of 58 U.S. National Guard Iraq War veterans previously deployed to combat who screened positive for posttraumatic stress disorder (PTSD) as to whether they would prefer PE, treatment with an antidepressant, or no treatment. We also gathered open-ended responses regarding the veterans' reasons for their choice and potential barriers to engaging in that treatment. A majority (53.4%) of veterans who completed the interview said they would choose to participate in PE, 36.2% preferred antidepressant treatment, 8.6% chose no treatment, and 1.8% were unable to choose among the options. Credibility of the treatment rationale and beliefs about the treatment's efficacy were the most frequently given reasons for choosing PE (45.2%); past treatment experience was the most common reason for choosing antidepressant treatment (47.6%). The most commonly cited barrier for those who chose both antidepressant treatment and PE was time to participate (52.4% and 77.4%, respectively). The findings suggest that PE is a credible and acceptable treatment option for veterans with PTSD symptomology.

The MMPI-2 Restructured Form Personality Psychopathology Five Scales: bridging DSM-5 Section 2 personality disorders and DSM-5 Section 3 personality trait dimensions.

This study examined in a college sample and a sample of non-treatment-seeking, trauma-exposed veterans the association between the MMPI-2 Restructured Form (MMPI-2-RF) Personality Psychopathology Five (PSY-5) Scales and DSM-5 Section 2 personality disorder (PD) criteria, the same system used in DSM-IV-TR, and the proposed broad personality trait dimensions contained in Section 3 of DSM-5. DSM-5 Section 2 PD symptoms were assessed using the SCID-II-PQ, and applying a replicated rational selection procedure to the SCID-II-PQ item pool, proxies for the DSM-5 Section 3 dimensions and select facets were constructed. The MMPI-2-RF PSY-5 scales demonstrated appropriate convergent and discriminant associations with both Section 2 PDs and Section 3 dimensions in both samples. These findings suggest the MMPI-2-RF PSY-5 scales can serve both conceptually and practically as a bridge between the DSM-5 Section 2 PD criteria and the DSM-5 Section 3 personality features.

Serotonin Transporter (SLC6A4) and FK506-Binding Protein 5 (FKBP5) Genotype and Methylation Relationships with Response to Meditation in Veterans with PTSD.

Meditation-based interventions are novel and effective non-pharmacologic treatments for veterans with PTSD. We examined relationships between treatment response, early life trauma exposure, DNA polymorphisms, and methylation in the serotonin transporter (SLC6A4) and FK506-binding protein 5 (FKBP5) genes. DNA samples and clinical outcomes were examined in 72 veterans with PTSD who received meditation-based therapy in two separate studies of mindfulness-based stress reduction (MBSR) and Transcendental Meditation (TM). The PTSD Checklist was administered to assess symptoms at baseline and after 9 weeks of meditation intervention. We examined the SLC6A4 promoter (5HTTLPR_L/S insertion/deletion + rs25531_A/G) polymorphisms according to previously defined gene expression groups, and the FKBP5 variant rs1360780 previously associated with PTSD disease risk. Methylation for CpG sites of SLC6A4 (28 sites) and FKBP5 (45 sites) genes was quantified in DNA samples collected before and after treatment. The 5HTTLPR LALA high expression genotype was associated with greater symptom improvement in participants exposed to early life trauma (p = 0.015). Separately, pre to post-treatment change of DNA methylation in a group of nine FKBP5 CpG sites was associated with greater symptom improvement (OR = 2.8, 95% CI 1.1-7.1, p = 0.027). These findings build on a wealth of existing knowledge regarding epigenetic and genetic relationships with PTSD disease risk to highlight the potential importance of SLC6A4 and FKBP5 for treatment mechanisms and as biomarkers of symptom improvement.

Treatment-related beliefs and reactions among trauma-focused therapy completers and discontinuers: A qualitative examination.

Prolonged exposure (PE) and cognitive processing therapy (CPT) for posttraumatic stress disorder (PTSD) are effective, but some patients do not respond adequately, and dropout rates are high. Patients' beliefs about treatment and perceptions of treatment components influence treatment outcomes and may be amenable to change through intervention. The present study sought to identify beliefs and reactions to PE and CPT that differentiated completers who screened negative for a PTSD diagnosis after treatment (PTSD-), completers who screened positive for a PTSD diagnosis after treatment (PTSD+), and discontinuers who attended six or fewer sessions. Thematic analysis was used to identify themes in qualitative data collected via retrospective semistructured interviews with 51 completers (19 PTSD- after treatment, 32 PTSD+ after treatment) and 66 discontinuers of PE/CPT. Participants were demographically diverse veterans across service eras. Treatment-related beliefs and reactions differentiating these groups included perceived helpfulness of treatment, self-efficacy in engaging in treatment, anticipatory anxiety and concerns, interpretations of ongoing symptoms, and perceived consequences of treatment on functioning. Further, some patterns seemed to differ in early treatment sessions compared to during the active components of treatment. Findings point to potentially malleable targets that could be intervened upon to improve trauma-focused treatment outcomes. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Ketamine-enhanced prolonged exposure therapy in veterans with PTSD: A randomized controlled trial protocol.

BACKGROUND: The 2023 VA/DoD Clinical Practice Guideline for the Management of PTSD recommends individual, manualized trauma-focused such as Prolonged Exposure (PE) over pharmacologic interventions for the primary treatment of PTSD. Unfortunately, clinical trials of trauma-based therapies in the military and veteran population showed that 30% to 50% of patients did not demonstrate clinically meaningful symptom change. Ketamine, an FDA-approved anesthetic with potent non-competitive glutamatergic N-methyl-d-aspartate antagonistic properties, has demonstrated to enhance the recall of extinction learning and decrease fear renewal without interference of extinction training in preclinical studies. METHODS: We plan to conduct a single site RCT comparing three ketamine treatment vs. active placebo (midazolam) adjunct to PE therapy among Veterans with PTSD. Pharmacological phase will start simultaneously with PE session 1. Infusions will be administered 24 h. prior to PE session for the first 3 weeks. After PE is completed (session 10), patients will be assessed during a 3-month follow-up period at various time points. We estimate that out of 100 veterans, 80 will reach time point for primary outcome measure and will be considered for primary analysis. Secondary outcomes include severity of depression and anxiety scores, safety and tolerability of ketamine-enhanced PE therapy, cognitive performance during treatment and early improvement during PE related to the rate of dropouts during PE therapy. DISCUSSION: Results of the proposed RCT could provide scientific foundation to distinguish the essential components of this approach, enhance the methodology, elucidate the mechanisms involved, and identify sub-PTSD populations that most likely benefit from this intervention.

Exploring Gender Differences in Veterans in a Secondary Analysis of a Randomized Controlled Trial of Mindfulness for Chronic Pain.

Background: Although studies have documented higher rates of chronic pain among women Veterans compared to men Veterans, there remains a lack of comprehensive information about potential contributors to these disparities. Materials and Methods: This study examined gender differences in chronic pain and its contributors among 419 men and 392 women Veterans, enrolled in a mindfulness trial for chronic pain. We conducted descriptive analyses summarizing distributions of baseline measures, obtained by survey and through the electronic health record. Comparisons between genders were conducted using chi-square tests for categorical variables and t-tests for continuous measures. Results: Compared to men, women Veterans were more likely to have chronic overlapping pain conditions and had higher levels of pain interference and intensity. Women had higher prevalence of psychiatric and sleep disorder diagnoses, greater levels of depression, anxiety, post-traumatic stress disorder, fatigue, sleep disturbance, stress and pain catastrophizing, and lower levels of pain self-efficacy and participation in social roles and activities. However, women were less likely to smoke or have a substance abuse disorder and used more nonpharmacological pain treatment modalities. Conclusion: Among Veterans seeking treatment for chronic pain, women differed from men in their type of pain, had greater pain intensity and interference, and had greater prevalence and higher levels of many known biopsychosocial contributors to pain. Results point to the need for pain treatment that addresses the comprehensive needs of women Veterans.Clinical Trial Registration Number: NCT04526158. Patient enrollment began on December 4, 2020.

A dynamic, multilevel approach to conceptualising and designing resilience research in the context of military stress.

Challenges in conceptualising resilience have impeded advancements in resilience science. In response, the National Institutes of Health (NIH) developed a general framework for harmonising the conceptualisation of resilience as a dynamic process determined by multiple systems and levels of analysis. Consistent with the NIH Resilience Framework, this paper presents a conceptual model of resilience applied to military service members. This model encompasses four core components necessary for resilience research: (1) the presence of significant challenge, (2) successful adaptation in response to the challenge, (3) the capacity for resilience (i.e., protective factors), and (4) the processes (i.e., mechanisms) by which protective factors exert positive effects on an individual's response. Guided by this conceptual model, we outline key methodological recommendations to advance resilience research and illustrate each using the Advancing Research on Mechanisms of Resilience study as an exemplar. We emphasise the need for future research to examine resilience as a dynamic process and apply a multilevel approach. We hope to provide a basic road map to those interested in improving the rigour of future research on resilience in a military context, the results of which can inform the development of interventions.

The role of the MMPI-2-Restructured Form (MMPI-2-RF) in predicting and better understanding engagement in posttraumatic stress disorder treatment.

The ability of Minnesota Multiphasic Personality Inventory-2-Restructured Form (MMPI-2-RF; Ben-Porath & Tellegen, 2008/2011) scores to predict treatment engagement in veterans referred for empirically supported treatments for symptoms of Posttraumatic Stress Disorder (PTSD) was examined. Early withdrawal from treatment and process factors, such as adherence and therapy session attendance, were examined in 100 veterans seeking treatment for trauma-related symptoms who were referred to a Veterans Health Administration medical center's tertiary care clinic for Prolonged Exposure (PE) or Cognitive Processing Therapy (CPT). Veterans who scored higher on MMPI-2-RF scales associated with emotional/internalizing problems were more likely to be referred to PE or CPT, but individuals with the highest scores on those scales were also more likely to withdraw before completing treatment. These findings suggest Harkness and Lilienfeld's (1997) call to use personality assessment to guide treatment planning holds promise to better understand treatment engagement. (PsycInfo Database Record (c) 2023 APA, all rights reserved).