Insomnia in United States military veterans: An integrated theoretical model

Insomnia and unhealthy alcohol use in a National Sample of Women Veterans 50 years and older enrolled in the Veterans Health Administration

In this study, we examined rates of insomnia and co-occurring unhealthy alcohol use in a national sample of women Veterans age 50 years and older. We further explored associations between sociodemographic measures, insomnia-related clinical characteristics, and unhealthy alcohol use, and analyzed whether women with insomnia were more likely to report unhealthy alcohol use. Study aims were evaluated using national Veterans Health Administration (VA) electronic health records data from VA's Corporate Data Warehouse. Data were extracted for women Veterans ≥50 years old with ≥1 VA primary care visit in each study year (2018: 3/11/18-3/10/19; 2020: 3/11/20-3/10/21; 2022: 3/11/22-3/10/23). Cases of insomnia were identified via diagnostic codes and prescription medications for insomnia. Unhealthy alcohol use was identified via Alcohol Use Disorders Identification Test-Consumption screening scores indicating unhealthy alcohol use. Annual sample sizes ranged from 240,420-302,047. Over the study timeframe, insomnia rates (diagnosis or medication) among women ≥50 years old ranged from 18.11-19.29%; co-occurring insomnia and unhealthy alcohol use rates ranged from 2.02-2.52%. Insomnia and unhealthy alcohol use rates were highest among women aged 50-59 years old. Depression and physical health comorbidities were consistently associated with insomnia; associations by race and ethnicity were less consistent. Compared to women without insomnia, women Veterans with either concurrent or unremitting insomnia were more likely to endorse unhealthy alcohol use. Findings signal a potential need for assessment and preventative efforts aimed at addressing insomnia and unhealthy alcohol use among women Veterans.

The Effectiveness of Imagery Rescripting Interventions for Military Veterans With Nightmares and Sleep Disturbances: A Systematic Review and Meta-Analysis

Imagery rescripting (ImRs) interventions have been found effective in improving sleep outcomes, although research has mostly focused on civilian, rather than military, samples. The aim of this review was to estimate the overall effectiveness of ImRs interventions for military veterans on primary outcomes of nightmare frequency and sleep quality. A systematic search was conducted in CINAHL, MEDLINE, PsycArticles, PsycINFO, Psychology and Behavioural Sciences Collection and the PTSDpubs database and was completed on 1 November 2021. Randomised controlled trials, nonrandomised trials and pre-post studies of ImRs interventions in veterans with sleep disturbances or nightmares were included. The methodological quality of the studies was assessed using the Effective Public Health Practice Project (EPHPP) tool, and meta-analysis was performed using Stata. Nineteen articles from 15 empirical studies were included in the review, and data from the 15 studies (involving 658 participants) were included in the meta-analysis. Meta-analysis findings indicated that ImRs interventions are associated with significant positive changes from pretreatment to posttreatment for nightmare and sleep quality. Significantly greater improvements were found in ImRs interventions compared to control groups for sleep quality (Hedges' g = -0.65, 95% CI [-1.20, -0.10]) but not for nightmare frequency (Hedges' g = -0.10, 95% CI [-0.34, 0.14]). Overall, the meta-analysis included a relatively small number of studies with poor methodological quality and considerable heterogeneity; therefore, findings should be cautiously interpreted. Further research should focus on veteran participants with larger samples and from a broader range of sources to determine effectiveness more confidently.

An integrated model of psychosocial correlates of insomnia severity in family caregivers of people with dementia

OBJECTIVES

Research has shown the relevance of stress and coping factors in explaining caregivers' insomnia symptoms. However, few attempts have been made to empirically test an integrative model for insomnia severity in family caregivers of people with dementia. The aim of this study was to test such a model, in which insomnia severity is proposed to be influenced by predisposing factors, precipitated by stressors, and perpetuated by behaviors to cope with these stressors.

METHODS

311 family caregivers of people with dementia were assessed for variables categorized as predisposing (e.g. female gender), precipitating (e.g. care-recipient's behavioral and psychological symptoms of dementia [BPSD]), and perpetuating factors (e.g. sleep aids). A theoretical model was developed and then statistically tested using structural equation modelling, analyzing the direct and indirect effects of the assessed variables on caregivers' insomnia severity.

RESULTS

Distress, sleep aids, and experiential avoidance showed a direct association with insomnia severity. Female gender, younger age, cognitive fusion, leisure activities, dysfunctional thoughts, frequency and distress caused by care-recipient's BPSD showed indirect associations with insomnia severity. The model explained 22% of the variance of caregivers' insomnia severity.

CONCLUSION

The results provide additional empirical support for the importance of predisposing, precipitating and perpetuating factors associated with caregivers' insomnia severity. The integrative model we propose may also be useful for developing interventions targeting insomnia symptoms in family dementia caregivers.

Insomnia Symptoms and Environmental Disruptors: A Preliminary Evaluation of Veterans in a Subacute Rehabilitation

OBJECTIVES

Evaluate insomnia symptoms and environmental disruptors at admission and discharge in a subacute rehabilitation care setting.

METHODS

Veterans (age ≥50) admitted to a Veterans Health Administration (VA) Hospital subacute rehabilitation between March and August 2022 completed baseline (N = 46) and follow up (N = 33) assessments with the Insomnia Severity Index (ISI), Sleep Need Questionnaire (SNQ), Epworth Sleepiness Scale (ESS), and an assessment of environmental sleep disruptors. Veterans were offered sleep resources after admission evaluations and outpatient referrals after discharge evaluations. Pearson correlation determined associations between length of stay (LOS), ISI, SNQ, and ESS scores at admission and discharge; chi-square and Wilcoxon Signed Rank Tests compared insomnia at admission and discharge.

RESULTS

One-half of participants reported clinically meaningful insomnia symptoms and sleep needs at baseline with no significant change at discharge. Almost all (89.1%) Veterans reported sleep was disturbed by environmental factors, primarily staff awakenings. LOS was correlated with ESS scores at discharge (r = .52, p = .002).

CONCLUSIONS

Environmental sleep disruption was common during a subacute rehabilitation admission and were not adequately addressed through sleep resources and treatment due to low uptake.

CLINICAL IMPLICATIONS

Providers should assess sleep at admission and lessen environmental sleep disruptors by reducing noise, light, and non-essential awakenings at night.

Longitudinal associations between insomnia, cannabis use and stress among US veterans

Insomnia is highly prevalent among military veterans, with rates nearly double that of civilian populations. Insomnia typically co-occurs with other psychological problems, including substance use (e.g. cannabis) and perceived stress. Much of the research focused on insomnia, stress and cannabis use explores cannabis as a sleep aid and a mechanism for stress relief. However, recent theoretical and empirical evidence suggests a dynamic interplay between insomnia, cannabis use and perceived stress, yet few longitudinal studies exist. Using a sample of 1105 post-9/11 veterans assessed over four time points across 12 months, we used latent difference score modelling to examine proportional change between insomnia, perceived stress and cannabis use. Results revealed a complex interplay between all three constructs. In particular, we show that higher prior levels of insomnia are associated with greater increases in perceived stress, and greater prior levels of stress are associated with greater increases in cannabis use. Perhaps more importantly, our results also point to cannabis use as a catalyst for greater increases in both stress and insomnia severity. Our results suggest there may be both benefits and costs of cannabis use among veterans. Specifically, for veterans who experience chronic sleep problems, perceived stress may become overwhelming, and the benefit of stress reduction from increased cannabis use may come at the cost of increasing insomnia symptomology.

Reducing Nighttime Interruptions and Improving Sleep for Hospitalized Patients by Restructuring Nighttime Clinical Workflow

BACKGROUND

Nighttime sleep disruptions negatively impact the experience of hospitalized patients.

OBJECTIVE

To determine the impact of adopting a sleep-promoting nighttime clinical workflow for hospitalized patients on nocturnal disruptions and sleep.

DESIGN

Survey-based pre- and post-intervention cross-sectional study using convenience samples.

PARTICIPANTS

Hospitalized veterans on a 23-bed general medical ward at a tertiary Veterans Administration Hospital.

INTERVENTIONS

Baseline sleep surveys (N=149) identified two major sources of interruptions: blood pressure checks at 4 am for telemetry patients and subcutaneous (SQ) heparin injections between 4:30 and 6 am for venous thromboembolism prophylaxis. Clinical workflow was restructured to eliminate these disruptions: moving 4 am blood pressure checks to 6 am and providing daily SQ enoxaparin at 9 am as an alternative to Q 8-h SQ heparin, which had prompted an injection between 4:30 and 6 am. The impact of these changes was assessed in a second round of surveys (N=99).

MAIN MEASURES

Frequency and sources for nighttime sleep disruptions; percentage of patients reporting longer time to fall asleep, more interruptions, and worse sleep quality (vs. home) before and after restructuring nighttime clinical workflow.

KEY RESULTS

After restructuring nighttime clinical workflow, medication administration as a source of nighttime disruption decreased from 40% (59/149) to 4% (4/99) (p<0.001). Blood pressure checks as a source of disruption decreased from 56% (84/149) to 42% (42/99) (p=0.033). Fewer patients reported taking longer to fall asleep in the hospital vs. home (39% pre-intervention vs. 25% post-intervention, p=0.021). Similarly, fewer patients experienced waking up more frequently in the hospital vs. home (46% pre-intervention vs. 32% post-intervention, p=0.036). Fewer patients reported sleeping worse in the hospital (44% pre-intervention vs. 39% post-intervention), though this trend was not statistically significant (p=0.54).

CONCLUSIONS

Nighttime disruptions in hospitalized patients frequently interfere with sleep. Restructuring of the clinical workflow significantly reduced disruptions and improved sleep.

Insomnia among community members in Florida: Associations with demographics, health conditions, and social support

Objectives

To identify associations between demographics, social determinants of health, health conditions, and reported history of insomnia. A cross-sectional study including 11,960 adult community members recruited through HealthStreet, a community outreach program at University of Florida.

Methods

Health assessments were conducted via interviews. Participants reported their demographic background, level of social support, history of health conditions, and insomnia. Logistic regression was used to understand associations between risk factors and history of insomnia.

Results

The prevalence of self-reported insomnia was 27.3%. Adults aged ≥ 65 years (OR = 1.16) and women (OR = 1.18) reported higher rates of insomnia than their counterparts. Black/African American individuals reported lower rates of insomnia (OR = 0.72) than White individuals. Individuals with food insecurity (OR = 1.53), a military history (OR = 1.30), lower social support (OR = 1.24), living alone (OR = 1.14), anxiety (OR = 2.33), cardiometabolic disease (OR = 1.58), and attention-deficit hyperactivity disorder (ADHD) (OR = 1.44) were significantly more likely to endorse insomnia compared with their counterparts. Depression (OR = 2.57) had the strongest association with insomnia.

Conclusions

This study provides evidence regarding who is at greater risk for insomnia among a large community-based sample. Our findings highlight the importance of screening for insomnia, particularly among patients who experience food insecurity, are military veterans, have anxiety, depression, ADHD, or cardiometabolic disease, as well as those who live alone or have lower levels of social support. Future public health campaigns should provide education on insomnia symptoms, treatments, and evidenced-based sleep-promotion strategies.

Pre-deployment threat learning predicts increased risk for post-deployment insomnia: Evidence from the Marine Resiliency Study

Insomnia is a common and impairing consequence of military deployment, but little is known about pre-deployment risk factors for post-deployment insomnia. Abnormal threat learning tendencies are commonly observed in individuals with insomnia and maladaptive responses to stress have been implicated in the development of insomnia, suggesting that threat learning could be an important risk factor for post-deployment insomnia. Here, we examined pre-deployment threat learning as a predictor of post-deployment insomnia and the potential mechanisms underlying this effect. Male servicemembers (N = 814) completed measures of insomnia, psychiatric symptoms, and a threat learning task before and after military deployment. Threat learning indices that differentiated participants with versus withoutinsomnia at post-deployment were tested as pre-deployment predictors of post-deployment insomnia. Post-deployment insomnia was linked to elevations on several threat learning indices at post-deployment, but only higher threat conditioning, as indexed by higher threat expectancy ratings to the danger cue, emerged as a pre-deployment predictor of post-deployment insomnia. This effect was independent of combat exposure levels and partially mediated by greater post-deployment nightmares. The tendency to acquire stronger expectations of aversive events following encounters with danger cues may increase risk for post-deployment insomnia, in part due to the development of more severe nightmares.

What's sleep got to do with it? Longitudinal associations between insomnia, PTSD, and alcohol use among U.S. Veterans

U.S. veterans are at risk for insomnia, which often co-occurs with symptoms of posttraumatic stress disorder (PTSD) and alcohol use. Much of the research on veterans and these three constructs is cross-sectional and focused on unidirectional pathways. Recent theoretical and empirical evidence suggests a dynamic interplay between insomnia, PTSD, and alcohol use, yet few longitudinal studies exist. A clearer understanding of these pathways is needed to help inform integrated treatments. Using a sample of 1,230 post-9/11 veterans assessed over four time points across 12 months, we used a latent difference score modeling approach to examine proportional and dynamic change between insomnia, PTSD, and alcohol. Results revealed a complex interplay between all three constructs. Higher prior levels of both PTSD and alcohol use were associated with greater subsequent changes in insomnia symptoms (i.e., worse sleep). Moreover, although veterans drank less frequently as their insomnia symptoms worsened over time, greater changes in insomnia symptoms (i.e., worse symptoms) was a mechanism linking PTSD and more frequent drinking. As the research on interventions addressing insomnia, PTSD, and alcohol is limited, there are opportunities for researchers and clinicians to develop programs that effectively target all three in integrated treatments.

Automated stress detection using mobile application and wearable sensors improves symptoms of mental health disorders in military personnel

Leading causes in global health-related burden include stress, depression, anger, fatigue, insomnia, substance abuse, and increased suicidality. While all individuals are at risk, certain career fields such as military service are at an elevated risk. Cognitive behavioral therapy (CBT) is highly effective at treating mental health disorders but suffers from low compliance and high dropout rates in military environments. The current study conducted a randomized controlled trial with military personnel to assess outcomes for an asymptomatic group (n = 10) not receiving mental health treatment, a symptomatic group (n = 10) using a mHealth application capable of monitoring physiological stress via a commercial wearable alerting users to the presence of stress, guiding them through stress reduction techniques, and communicating information to providers, and a symptomatic control group (n = 10) of military personnel undergoing CBT. Fifty percent of symptomatic controls dropped out of CBT early and the group maintained baseline symptoms. In contrast, those who used the mHealth application completed therapy and showed a significant reduction in symptoms of depression, anxiety, stress, and anger. The results from this study demonstrate the feasibility of pairing data-driven mobile applications with CBT in vulnerable populations, leading to an improvement in therapy compliance and a reduction in symptoms compared to CBT treatment alone. Future work is focused on the inclusion of passive sensing modalities and the integration of additional data sources to provide better insights and inform clinical decisions to improve personalized support.

Reducing Barriers to Behavioral Treatments for Insomnia: A Qualitative Examination of Veterans' Perspectives of BBTI

Objective: Although behavioral treatments are recommended for treating insomnia disorder, these treatments are not the most commonly provided treatments due to numerous barriers (e.g., treatment length, time limitations). Brief Behavioral Treatment for Insomnia (BBTI) was developed, in part, to help overcome these barriers. The purpose of the current study was to qualitatively examine the treatment experiences of veterans with insomnia disorder participating in BBTI.Methods: All veterans (n=46) who were randomized to receive BBTI as part of a randomized clinical trial participated in 10-20 minute semi-structured interviews one week after completing treatment. Rapid analysis procedures were used for qualitative analysis.Results: Thirteen qualitative themes were identified: BBTI provided veterans with the skills they believed they needed to continue improving independently post-treatment; beginning BBTI with in-person sessions was valued; phone sessions helped participation; veterans did not perceive that they could cover the same content during phone and in-person sessionsl; materials could be more portable; BBTI created accountability; BBTI required discipline and willingness; BBTI facilitated buy-in; BBTI was aligned with military culture; loved ones could provide important support; BBTI could be improved with more personalization; BBTI challenged expectations of mental health; and BBTI improved awareness of health behaviors beyond sleep.Conclusions: BBTI was successful in overcoming barriers to behavioral insomnia treatment and interviews identified critical treatment aspects that should be maintained to preserve acceptability (e.g., in-person session first). Areas in which BBTI did not fully meet the needs of veterans and targets for improvement (e.g., ameliorating understanding and expectations of phone sessions) were also identified.

Childhood Trauma Differentially Impacts Depression and Stress Associations with Reintegration Challenges Among Post-9/11 U.S. Veterans

BACKGROUND

Post-9/11 veterans exhibit high prevalence of deployment stress, psychological conditions, and traumatic brain injury (TBI) which impact reintegration, especially among those with a history of interpersonal early life trauma (I-ELT). The relative importance of each risk factor is unclear.

PURPOSE

We examined major deployment and clinical exposures of reintegration challenges among veterans with and without I-ELT.

METHOD

We analyzed cross-sectional data of 155 post-9/11 veterans from the Translational Research Center for TBI and Stress Disorders study.

FINDINGS

Depression severity had the strongest association with reintegration challenges, followed by posttraumatic stress disorder (PTSD) severity, post-deployment stress, and deployment safety concerns. Deployment safety concerns had a stronger, significant association among veterans with I-ELT. In nearly every model, PTSD and depression severities were weaker for veterans with I-ELT, compared to those without.

DISCUSSION

Clinicians should consider the relative risk of concurrent clinical conditions and trauma histories when considering veterans' reintegration needs.

Dementia in military and veteran populations: a review of risk factors-traumatic brain injury, post-traumatic stress disorder, deployment, and sleep

The military population face a unique set of risk factors that may increase the risk of being diagnosed with dementia. Traumatic brain injury (TBI) and post-traumatic stress disorder (PTSD) have a higher prevalence in this group in comparison to the civilian population. By delving into the individual relationships between TBI and dementia, and PTSD and dementia, we are able to better explore dementia in the military and veteran populations. While there are some inconsistencies in results, the TBI-dementia association has become more widely accepted. Moderate-to-severe TBI has been found to increase the risk of being diagnosed with Alzheimer's disease. A correlation between PTSD and dementia has been established, however, whether or not it is a causal relationship remains unclear. Factors such as blast, combat and chemical exposure may occur during a deployment, along with TBI and/or PTSD diagnosis, and can impact the risk of dementia. However, there is a lack of literature exploring the direct effects of deployment on dementia risk. Sleep problems have been observed to occur in those following TBI, PTSD and deployment. Poor sleep has been associated with possible dementia risk. Although limited studies have focused on the link between sleep and dementia in military and veteran populations, sleep is a valuable factor to study due to its association and interconnection with other military/veteran factors. This review aims to inform of various risk factors to the cognitive health of military members and veterans: TBI, PTSD, deployment, and sleep.

Prevalence, risk correlates, and health comorbidities of insomnia in US military veterans: results from the 2019-2020 National Health and Resilience in Veterans Study

STUDY OBJECTIVES

Veterans experience high levels of trauma, psychiatric, and medical conditions that may increase their risk for insomnia. To date, however, no known study has examined the prevalence, risk correlates, and comorbidities of insomnia in a nationally representative sample of veterans.

METHODS

A nationally representative sample of 4,069 US military veterans completed a survey assessing insomnia severity; military, trauma, medical, and psychiatric histories; and health and psychosocial functioning. Multivariable analyses examined the association between insomnia severity, psychiatric and medical comorbidities, suicidality, and functioning.

RESULTS

A total of 11.4% of veterans screened positive for clinical insomnia and 26.0% for subthreshold insomnia. Greater age and retirement were associated with a lower likelihood of insomnia. Adverse childhood experiences, traumatic life events, lower education and income were associated with greater risk for insomnia. A "dose-response" association was observed for health comorbidities, with increasing levels of insomnia associated with elevated odds of psychiatric and medical conditions (clinical vs no insomnia odds ratio = 1.8-13.4) and greater reductions in health and psychosocial functioning (clinical vs no insomnia Cohen's d = 0.2-0.4). The prevalence of current suicidal ideation was 3-5 times higher in veterans with clinical and subthreshold insomnia relative to those without insomnia (23.9% and 13.6% vs 4.5%, respectively).

CONCLUSIONS

Nearly 2 in 5 US veterans experience clinical or subthreshold insomnia, which is associated with substantial health burden and independent risk for suicidal ideation. Results underscore the importance of assessment, monitoring, and treatment of insomnia in veterans as they transition from the military.

Biopsychosocial factors and health outcomes associated with cannabis, opioids and benzodiazepines use among older veterans

Background: Older Veterans may experience injuries that result in chronic pain and mental health conditions. Given the increasing availability of medical cannabis, it is important to examine if it serves as a viable or undesirable form of care relative to existing approaches.Objectives: We compared cannabis, prescription opioids, and benzodiazepines use between older Veteran and non-Veterans, and identified outcomes of cannabis use among Veterans. Because of the physical and mental conditions experienced by older Veterans we expected Veterans to report higher use of opioids and benzodiazepines compared to non-Veterans.Methods: We collected surveys from individuals aged 60 and older enrolled in the Illinois Medical Cannabis Patient Program and conducted logistic regression to identify factors associated with cannabis, opioids and benzodiazepines use between Veterans (N = 514, 90.2% male) and Non-Veterans (N = 2758, 41.1% male) across biopsychosocial factors.Results: Both groups reported similar levels of pain, quality of life, social satisfaction, and sleep quality. Veterans were more likely to use cannabis for mental health conditions (p = <.001) while they reported lower use for pain-related conditions (p = <.001) than non-Veterans. Veterans were less likely to use opioids (p = .013) and benzodiazepines (p < .01) compared to non-Veterans. Veterans also reported desirable health outcomes of cannabis use for pain, sleep quality, health conditions, and quality of life.Conclusions: Our work provides insights for clinicians and policy makers to consider whether cannabis can be a viable option to reduce or replace opioid and benzodiazepine use by older Veterans with chronic physical and mental health conditions.

The role of insomnia in the association between posttraumatic stress disorder and hypertension

OBJECTIVE

Posttraumatic stress disorder (PTSD) is associated with incident hypertension. Although this relationship is poorly understood, PTSD is also associated with insomnia symptoms, which increases the risk for hypertension. Whether insomnia contributes to PTSD-associated risk for hypertension is unknown.

METHODS

We examined self-report survey and electronic health record data from 1109 participants in the Women Veterans Cohort Study (mean age: 43.8 ± 10.9 years; 52% women, 81% White) to assess the cross-sectional associations between PTSD symptom severity, recent symptoms of insomnia, and hypertension, defined as self-reported treatment for high blood pressure in the last year. Structural equation modeling was used to examine whether insomnia symptoms mediate the association between PTSD and hypertension.

RESULTS

PTSD symptom severity was associated with hypertension (r = 0.09, P < 0.001). PTSD symptom severity and hypertension were each associated with the insomnia symptoms difficulty falling asleep, difficulty staying asleep, and worry/distress about sleep problems (PTSD: rs = 0.58--0.62, P <  0.001; hypertension: rs = 0.07--0.10, P <  0.001). A latent variable derived from those symptoms mediated 9% of the association between PTSD symptom severity and hypertension (P = 0.02).

CONCLUSION

In this study of young and middle-aged Veterans, insomnia symptoms mediated the association between PTSD and hypertension. Difficulties falling asleep and maintaining sleep and related distress may be particularly deleterious for cardiovascular health in Veterans. Longitudinal data is required to further investigate the associations between PTSD, insomnia, and hypertension.

Perceived benefits of a brief acupuncture for sleep disturbances in post-deployment military service members

STUDY OBJECTIVES

The purpose of this study was to describe the perceived benefits of a manual standardized stress acupuncture (MSSA) for sleep disturbances (SD) in service members with deployment exposure.

METHODS

This qualitative study was imbedded in a two-arm randomized controlled trial, mixed-methods research that evaluated the effect of weekly MSSA for four weeks as an adjunct treatment with an abbreviated cognitive behavioral therapy for insomnia (CBTi) for SD in service members. Participants were randomized to either the experimental group (CBTi and MSSA) and control group (CBTi only). CBTi consisted of one group psychotherapy for 60 minutes, a follow-up telephone therapy for 30 minutes, and additional four 30-minute follow-up sessions via telephone. Participants provided written journal entries by answering five open-ended questions about their treatment experiences at week five during the posttreatment assessment. Journal log entries were transcribed verbatim in the Dedoose software. A thematic content analysis method was used to code emerging themes.

RESULTS

Three overarching categories were found from the qualitative data: personal challenges in implementing the CBTi sleep strategies, no perception of improvement from treatment, and perceived benefits of treatment. The CBTi/MSSA group reported greater benefits in sleep and in other life areas including mental, physical, and social functioning using thematic content analysis.

CONCLUSIONS

Findings of this study showed greater improvements in participants' sleep, mood, physical health, and occupational and social functioning after receiving the combination of CBTi and MSSA. Future research that investigates the long-term effects of CBTi and MSSA may be beneficial among post-deployment service members.

CLINICAL TRIAL REGISTRATION

Our study was conducted as part of a mixed-methods study registered with clinicaltrials.gov identifier: NCT04031365.

Identifying factors that contribute to military veterans' post-military well-being

Prior research has examined the independent effects of demographic and military characteristics, trauma history, and coping resources on military veterans' health. However, there is limited knowledge of how these factors intersect with one another and with veterans' health to impact their broader well-being as they readjust to civilian life. Data for this study were drawn from a longitudinal investigation of the health and broader well-being of U.S. veterans (N = 7150) who had recently left military service. Machine learning analyses (random forests of regression trees) were used to examine how factors assessed shortly after military separation were associated with veterans' well-being approximately a year later. Veterans who endorsed the combination of low depression, high social support, and high psychological resilience were most likely to report high well-being a year later. Neither demographic and military characteristics nor trauma history emerged as strong predictors of veterans' well-being when considered in the context of other factors. Although most predictors were similar for women and men, depression was a stronger predictor of women's well-being. Results highlight the importance of screening for and intervening with veterans who report high depression, low social support, and low psychological resilience when leaving military service. These findings can inform efforts to promote veterans' post-military well-being.

Prevalence rates and correlates of insomnia disorder in post-9/11 veterans enrolling in VA healthcare

STUDY OBJECTIVES

Post-9/11 veterans are particularly vulnerable to insomnia disorder. Having accurate prevalence rates of insomnia disorder in this relatively young, diverse population, is vital to determine the resources needed to identify and treat insomnia disorder. However, there are no accurate prevalence rates for insomnia disorder in post-9/11 veterans enrolling in the VA Healthcare System (VHA). We present accurate prevalence of insomnia disorder, and correlates, in a large sample of post-9/11 veterans enrolling in a VHA.

METHODS

This was an observational study of 5,552 post-9/11 veterans newly enrolling for health care in a VHA. Data were collected using VA eScreening. Insomnia diagnosis was determined using a clinical cutoff score of ≥ 11 on the Insomnia Severity Index. Measures also included sociodemographic, service history, posttraumatic stress disorder (PTSD), depression, suicidal ideation, alcohol misuse, military sexual trauma, traumatic brain injury (TBI), and pain intensity.

RESULTS

About 57.2% of the sample population had insomnia disorder. Our sample was nationally representative for age, sex, ethnicity, branch of the military, and race. The sample also was at high-risk for a host of clinical disorders, including PTSD, TBI, and pain; all of which showed higher rates of insomnia disorder (93.3%, 77.7%, and 69.6%, respectively).

CONCLUSIONS

The findings suggest alarmingly high rates of insomnia disorder in this population. Examining and treating insomnia disorder, especially in the context of co-occurring disorders (e.g. PTSD), will be a necessity in the future.

Sleep in the United States Military

The military lifestyle often includes continuous operations whether in training or deployed environments. These stressful environments present unique challenges for service members attempting to achieve consolidated, restorative sleep. The significant mental and physical derangements caused by degraded metabolic, cardiovascular, skeletomuscular, and cognitive health often result from insufficient sleep and/or circadian misalignment. Insufficient sleep and resulting fatigue compromises personal safety, mission success, and even national security. In the long-term, chronic insufficient sleep and circadian rhythm disorders have been associated with other sleep disorders (e.g., insomnia, obstructive sleep apnea, and parasomnias). Other physiologic and psychologic diagnoses such as post-traumatic stress disorder, cardiovascular disease, and dementia have also been associated with chronic, insufficient sleep. Increased co-morbidity and mortality are compounded by traumatic brain injury resulting from blunt trauma, blast exposure, and highly physically demanding tasks under load. We present the current state of science in human and animal models specific to service members during- and post-military career. We focus on mission requirements of night shift work, sustained operations, and rapid re-entrainment to time zones. We then propose targeted pharmacological and non-pharmacological countermeasures to optimize performance that are mission- and symptom-specific. We recognize a critical gap in research involving service members, but provide tailored interventions for military health care providers based on the large body of research in health care and public service workers.

Opioid and sedative misuse among veterans wounded in combat

BACKGROUND

Military veterans wounded in combat are a high-risk group for emotional and physical distress, which may be exacerbated by misuse of prescription opioids and sedatives. The goal of the current study was to examine the prevalence and correlates of prescription opioid and sedative misuse among veterans wounded in combat.

METHOD

We recruited veterans from the Combat Wounded Coalition (n = 212; 84% non-Hispanic White; 97.6% male) to complete an online survey of mental health and substance use disorder symptoms, assessed via the DSM-5 Self-Rated Level 1 Cross-Cutting Symptoms Measure, the Posttraumatic Stress Disorder (PTSD) Checklist for DSM-5, the Pain Enjoyment General Activity Scale, and the Alcohol Use Disorders Identification Test (AUDIT). Prescription opioid and sedative misuse was assessed by frequency of use in the past year that was not currently prescribed or using more than prescribed.

RESULTS

Participants reported high rates of past year prescription opioid misuse (46.2%) and sedative misuse (21.7%). Misuse of both opioids and sedatives was associated with the most distress, including greater depression, anger, sleep disturbance, AUDIT scores, PTSD symptoms, suicidality, and pain interference. In multivariable multinomial logistic regression analyses, greater sleep disturbance (OR = 1.73) was associated with greater odds of sedative misuse versus no misuse. Higher AUDIT scores were associated with greater risk of sedative misuse (OR = 1.16) versus opioid misuse only.

CONCLUSIONS

Military veterans wounded in combat have high rates of prescription opioid misuse and sedative misuse. Sleep problems and AUDIT scores might help identify veterans who are at most risk for opioid and sedative misuse.

Prevalence of Mental Health Problems and Willingness to Participate in a Mindfulness Treatment: An Examination among Veterans Injured in Combat

Numerous studies have demonstrated that combat-exposed military veterans are at risk for numerous psychiatric disorders and rates of comorbid mental health and substance use disorders are high. Veterans wounded in combat are a particularly high-risk group of military veterans, however treatment services are often underutilized among this group and it is unclear whether an online treatment program that targets emotional and physical distress (including mental health symptoms and substance use disorders) would be appealing to Veterans wounded in combat. The goal of the current study was to conduct formative research on whether veterans wounded in combat would be interested in an online mindfulness-based treatment to help them cope with emotional and physical discomfort. We recruited Veterans from Combat Wounded Coalition (n = 163; 74.2% non-Hispanic White; 95.7% male) to complete an online survey of mental health and substance use disorder symptoms and willingness to participate in mindfulness treatment. The majority of participants reported significant mental health symptoms and indicated that they would be willing to participate in mindfulness treatment, either at the VA (54.0%) or online (59.5%). Those with problems in multiple health domains and lower self-compassion were significantly more likely to express interest in treatment and likely to represent a very high need group of veterans. The development of a mindfulness-based treatment for this group of individuals could be very helpful in reducing mental health symptoms and improving quality of life among wounded warriors.

Predictors of cognitive behavioral therapy outcomes for insomnia in veterans with post-traumatic stress disorder

BACKGROUND

Insomnia is a well-recognized co-morbid condition in veterans with post-traumatic stress disorder (PTSD) with negative personal and social consequences. Cognitive behavioral therapy (CBT) is considered an efficacious treatment, yet little attention has been devoted to treatment response in this population. The aim of this study was to identify factors that may predict clinical response to CBT for insomnia (CBT-I) in veterans with PTSD.

METHODS

A retrospective chart review of 136 veterans with PTSD-related insomnia was conducted. Epworth Sleepiness Score (ESS), PTSD Checklist (PCL), and Insomnia Severity Index (ISI) were assessed at baseline. We converted prescribed antidepressant and hypnotic dosages before and after CBT-I to dose equivalent of fluoxetine diazepam, respectively. A 6-point reduction or greater in ISI scores at 6-month follow-up visit was defined as CBT-I responsiveness.

RESULTS

CBT-I responsiveness was observed in 47% of veterans with PTSD. Seventy-seven percent completed treatment. Lack of perceived benefit was the most given reason for failure to return for follow-up. In contrast to hypnotics, antidepressants usage decreased in those who had experienced benefit from CBT-I (p = 0.001). Younger age, non-white race, and use of hypnotics prior to behavioral therapy were independently associated with lack of response to CBT-I.

CONCLUSIONS

While CBT-I ameliorates insomnia in veterans with PTSD, the use of hypnotics prior to instituting behavioral therapy may negatively affect the response rate to CBT-I. Future studies should examine whether racial and cultural influences on the generation of insomnia in veterans with PTSD affects the response to CBT-I.