Alcohol Use, Problems, and the Course of Posttraumatic Stress Disorder: A Prospective Study of Female Crime Victims

Examining the Temporal Relation between Posttraumatic Stress Symptoms and Heavy Drinking among Veterans Receiving Mental Health Treatment in Primary Care

OBJECTIVE

Evidence for the use of integrated treatments targeting co-occurring posttraumatic stress disorder (PTSD) and alcohol use disorders is steadily growing. However, limited work has evaluated the temporal association between posttraumatic stress symptoms (PTSS) and alcohol misuse over the course of integrated treatment, with no studies examining such interventions in primary care (PC). The current study examined temporal changes in PTSS and heavy drinking among individuals who received a brief treatment for co-occurring PTSD and alcohol misuse in PC (Primary Care Treatment Integrating Motivation and Exposure; PC-TIME) compared with those who received PC treatment as usual (PC-TAU).

METHOD

A total of 63 veterans (33 randomized to PC-TIME and 30 randomized to PC-TAU) presenting to PC with co-occurring PTSD and alcohol misuse were included in this study. PTSS and heavy drinking were examined at each treatment session for those in PC-TIME. Veterans in both conditions provided reports of PTSS and heavy drinking at baseline, 8-weeks (post-treatment), 14-weeks, and 20-week follow-ups.

RESULTS

Session-by-session findings for PC-TIME demonstrated that PTSS at Session 1 predicted a greater decrease in heavy drinking from Session 1 to Session 2. Moreover, heavy drinking at baseline predicted greater decreases in PTSS at 8-weeks for those in PC-TIME, whereas the reverse association was found for those randomized to PC-TAU. Additionally, heavy drinking at 8-weeks predicted decreased PTSS at 14-weeks for those randomized to PC-TAU.

CONCLUSIONS

The current study evidenced mixed support for the temporal precedence of PTSS and alcohol misuse. Relations between PTSS and heavy drinking appeared to be linked to treatment targets within PC-TIME and varied between treatment condition (PC-TIME versus PC-TAU). Notably, those with greater than average heavy drinking at the initiation of integrated treatment appeared to have greater reductions in PTSS at post-treatment. Results suggest a mutual maintenance model may best characterize the association between co-occurring PTSS and heavy drinking among treatment-seeking individuals.

Personalized normative feedback for hazardous drinking among college women: Differential outcomes by history of incapacitated rape

OBJECTIVE

Personalized normative feedback (PNF) interventions are effective at reducing hazardous drinking in college. However, little is known about who is most receptive to PNF. College women with a history of alcohol-related incapacitated rape (IR) are at elevated risk for hazardous drinking, but it is unclear what impact intervention messaging may have on this group and how their outcomes compare to those without past IR. To address this gap, this study involved secondary data analysis of a large web-based clinical trial.

METHOD

Heavy drinking college women (N = 1,188) were randomized into PNF (n = 895) or control conditions (n = 293). Postintervention, women reported their reactions to intervention messaging. Hazardous drinking outcomes (typical drinking, heavy episodic drinking [HED], peak estimated blood alcohol content [eBAC], blackout frequency) were assessed at baseline and 12 months.

RESULTS

Past IR was reported by 16.3% (n = 194) of women. Women with a history of IR reported more baseline hazardous drinking and greater readiness to change than women without IR. For those who received PNF, history of IR related to greater perceived impact of the intervention, but no difference in satisfaction with the message. After controlling for baseline drinking, regressions revealed the effect of PNF was moderated by IR for frequency of HED at 12 months. Simple main effects revealed PNF was associated with lower levels of hazardous drinking at follow-up among women with past IR.

CONCLUSIONS

This initial investigation suggests PNF is a low resource and easily disseminated intervention that can have a positive impact on college women with past IR. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

PTSD in the Year Following Sexual Assault: A Meta-Analysis of Prospective Studies

OBJECTIVE

Sexual assault is associated with higher rates of posttraumatic stress disorder (PTSD) than other traumas, and the course of PTSD may differ by trauma type. However, the course of PTSD after sexual assault has not been summarized. The aim of this meta-analysis was to identify the prevalence and severity of PTSD and changes to the average rate of recovery in the 12 months following sexual assault.

METHOD

Authors searched four databases for prospective studies published before April 2020 and sought relevant unpublished data. Eligible studies assessed PTSD in at least 10 survivors of sexual assault in at least two time points, starting within 3 months postassault. Random effects linear-linear piecewise models were used to identify changes in average recovery rate and produce model-implied estimates of monthly point prevalence and mean symptom severity.

RESULTS

Meta-analysis of 22 unique samples (N = 2,106) indicated that 74.58% (95% confidence interval [CI]: [67.21, 81.29]) and 41.49% (95% CI: [32.36, 50.92]) of individuals met diagnostic criteria for PTSD at the first and 12th month following sexual assault, respectively. PTSD symptom severity was 47.94% (95% CI: [41.27, 54.61]) and 29.91% (95% CI: [23.10, 36.73]) of scales' maximum severity at the first and 12th month following sexual assault, respectively. Most symptom recovery occurred within the first 3 months following sexual assault, after which point the average rate of recovery slowed.

CONCLUSIONS

Findings indicate that PTSD is common and severe following sexual assault, and the first 3 months postassault may be a critical period for natural recovery.

Comorbid posttraumatic stress disorder and alcohol use disorder in low- and middle-income countries: A narrative review

Much of the research on posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD) has been conducted in high-income countries (HICs). However, PTSD and AUD commonly co-occur (PTSD + AUD) are both associated with high global burden of disease, and disproportionately impact those in low- and middle-income countries (LMICs). This narrative review attempts to synthesize the research on prevalence, impact, etiological models, and treatment of PTSD + AUD drawing from research conducted in HICs and discussing the research that has been conducted to date in LMICs. The review also discusses overall limitations in the field, including a lack of research on PTSD + AUD outside of HICs, issues with measurement of key constructs, and limitations in sampling strategies across comorbidity studies. Future directions are discussed, including a need for rigorous research studies conducted in LMICs that focus on both etiological mechanisms and on treatment approaches.

Client and staff perceptions of the integration of trauma informed care and specialist posttraumatic stress disorder treatment in residential treatment facilities for substance use: A qualitative study

INTRODUCTION

Comorbid posttraumatic stress disorder (PTSD) is prevalent among people seeking residential treatment for substance use disorders (SUD). We examined client and staff perceptions of the relationship between trauma and SUDs, and the integration of trauma-informed care (TIC) and specialist-delivered treatment for PTSD in residential alcohol and other drug (AOD) treatment facilities.

METHODS

Individual semi-structured interviews were conducted with frontline staff (n = 20) and clients (n = 18) in two residential AOD treatment facilities in Queensland, Australia. Interviews were audio recorded, transcribed and shared client and staff data was analysed using thematic analysis.

RESULTS

Major staff and client themes emerged: PTSD was perceived as an underlying cause of SUD, where AOD is used to cope with and avoid PTSD and related symptoms (Theme 1). Residential facilities were perceived to provide a safe and supportive environment for clients (Theme 2). Psychoeducation on SUD and PTSD was also highlighted to normalise experiences associated with comorbid SUD/PTSD and promote help-seeking pathways for specialist PTSD treatment. Concurrent treatment of SUD and PTSD in the residential setting was sought after and was perceived to enhance treatment outcomes (Theme 3). Staff saw the need for implementing TIC into the organisation and perceived TIC as a multi-faceted and consistent approach of service delivery.

DISCUSSION AND CONCLUSIONS

Both clients and staff perceive comorbid SUD/PTSD as a challenge in residential treatment, that may be overcome through integrating TIC and PTSD treatment in residential treatment facilitates for substance use. Organisational and practical implications are discussed.

Emergency Department Nurses' Perceptions of Patient Substance Use, Impact on Sexual Assault Care, and Access to Follow-up Behavioral Health Resources

INTRODUCTION

Patients may present to the emergency department for sexual assault care under the influence of drugs or alcohol. However, many emergency nurses are not prepared to meet their unique needs or aware of follow-up behavioral health resources. The purpose of this study was to (1) summarize current resources provided to patients and processes for referral to behavioral health services after sexual assault care, (2) explore emergency nurses' attitudes and behaviors toward patient substance use, and (3) explore nurses' perceptions of adjunct mobile health interventions for follow-up behavioral health care and describe anticipated barriers to use.

METHODS

Fifteen emergency nurses participated in semi-structured qualitative interviews.

RESULTS

Participants had mixed perceptions of patient intoxication during sexual assault care. They felt that conversations about substance use may be more appropriate after the ED visit. Participants recognized the opportunity to connect ED patients with substance use treatment or prevention resources but perceived that there are few local service providers. Most participants were not referring patients with substance use issues to behavioral health services after sexual assault care and said that their emergency departments did not have processes for referral to these services. Acceptability of mobile health for follow-up behavioral health care was high, but participants had concerns for patient privacy and internet access. Participants gave recommendations to improve referral practices and patient engagement with mobile health interventions.

DISCUSSION

This study highlights the need for emergency nurses to consider patient intoxication during sexual assault care and opportunities to connect patients with resources post-assault.

Alcohol Addiction in War Veterans Treated in a In-patient Psychiatric Facility: Incidence, Comorbidity with PTSD Symptoms, Association with Combat Stressors

BACKGROUND

The dearth of and inconsistency in the data on the prevalence, risks of occurrence, comorbidity, and causation of stress-related disorders and alcohol use disorders in Russian veterans of local wars constituted the background for this study.

AIM

To study the psychopathological structure, clinical changes, and the reasons for the mental disorders suffered by Russian veterans of local wars; in particular, to study the prevalence, pathogenic factors, comorbidity of alcohol addiction and alcohol abuse, together with symptoms of stress disorders, in Russian veterans undergoing inpatient treatment.

METHODS

Our observational case-control study included 685 patients who were undergoing treatment in the psychiatric department of a military hospital: the Main group (veterans) consisted of 264 veterans of armed conflicts who had undergone inpatient treatment from 1992 to 2010; the Control group, 1, 296 patients, all servicemen and military pensioners who had undergone inpatient treatment during a calendar year and had never taken part in combat operations in the past; Control group 2, 125 military personnel (regular and reserve) who had not taken part in combat operations and corresponded to the patients of the main group in terms of the mean age and age distribution curve. We performed a clinical and psychopathological analysis of the symptoms identified in patients from the compared samples and, then, compared them with the ICD-10 criteria of post-traumatic stress disorder (PTSD) and alcohol-related disorders. This allowed us to establish the significance of the difference in their frequency and degree of association at the stage of the data analysis.

RESULTS

We uncovered no difference in the prevalence of symptoms of alcohol addiction and alcohol abuse among veterans and other servicemen and military pensioners who had not taken part in combat operations. However, there was a tendency to underdiagnose alcohol addiction in veterans in general and those with symptoms of PTSD, in particular. That is, alcohol addiction was not diagnosed in most cases when the veterans displayed symptoms of stress or other mental disorders, in addition to the signs of alcohol addiction. In most such cases, a stress-related mental disorder or another mental disorder with identified signs was diagnosed and alcohol abuse was described as a concomitant disorder or a complication. There was no significant association between any form of alcohol addiction or abuse and the presence of stress disorder symptoms in our sample of veterans; on the contrary, symptoms of re-experience of trauma were more often observed in veterans who were not prone to frequent drinking. The incidence of combat stressors traced in the medical history did not differ in veterans with any form of alcohol abuse and veterans who were not prone to frequent drinking. However, the main group subjects with alcohol addiction more often displayed cases of addictive behavior during combat operations. Therefore, alcohol abuse during combat operations requires additional research to better establish its prognostic significance.

CONCLUSION

This Study found no difference in the incidence of alcohol dependence and alcohol abuse among veterans and other officers. In the sample of veterans, there was no significant association between alcoholism and the presence of PTSD symptoms or a history of combat stressors. It is possible that the same risk of alcohol addiction in different categories of military officers is due to a compact of social stressors that equally had a more significant adverse effect on the entire population of Russian military personnel in the 90s of the last century and the first years of this century, as well as the massive abuse of alcohol, which could also equalize the risks of developing alcohol dependence in all groups of militaries.

Temporal dynamics of symptom change among veterans receiving an integrated treatment for posttraumatic stress disorder and substance use disorders

The present study examined temporal patterns of symptom change during treatment for comorbid posttraumatic stress disorders (PTSD) and substance use disorders (SUDs). We hypothesized that PTSD symptom severity would predict subsequent-session substance use and that this association would be particularly strong among patients who received an integrated treatment versus SUD-only treatment. Participants were 81 United States military veterans with current PTSD and an SUD who were enrolled in a 12-week, randomized controlled trial examining the efficacy of an integrated treatment called Concurrent Treatment of PTSD and Substance Use Disorders Using Prolonged Exposure (COPE) compared with cognitive behavioral relapse prevention therapy (RP). Lagged multilevel models indicated that PTSD symptom improvement did not significantly predict the likelihood of next-session substance use (likelihood of use: B = 0.03, SE = 0.02, p = .141; percentage of days using B = -0.02, SE = 0.01, p = .172. Neither substance use, B = 1.53, SE = 1.79, p = .391, nor frequency of use, B = 0.26, SE = 0.50, p = .612, predicted next-session PTSD symptom severity in either treatment condition. Stronger associations between PTSD symptoms and next-session substance use were expected given the self-medication hypothesis. Additional research is needed to better understand the temporal dynamics of symptom change as well as the specific mediators and mechanisms underlying symptom change.

Sex and context differences in the effects of trauma on comorbid alcohol use and post-traumatic stress phenotypes in actively drinking rats

Alcohol use disorder (AUD) and affective disorders are frequently comorbid and share underlying mechanisms that could be targets for comprehensive treatment. Post-traumatic stress disorder (PTSD) has high comorbidity with AUD, but comprehensive models of this overlap are nascent. We recently characterized a model of comorbid AUD and PTSD-like symptoms, wherein stressed rats receive an inhibitory avoidance (IA)-related footshock on two occasions followed by two-bottle choice (2BC) voluntary alcohol drinking. Stressed rats received the second footshock in a familiar (FAM, same IA box as the first footshock) or novel context (NOV, single-chambered apparatus); the FAM paradigm more effectively increased alcohol drinking in males and the NOV paradigm in females. During abstinence, stressed males displayed avoidance-like PTSD symptoms, and females showed hyperarousal-like PTSD symptoms. Rats in the model had altered spontaneous action potential-independent GABAergic transmission in the central amygdala (CeA), a brain region key in alcohol dependence and stress-related signaling. However, PTSD sufferers may have alcohol experience prior to their trauma. Here, we therefore modified our AUD/PTSD comorbidity model to provide 3 weeks of intermittent extended alcohol access before footshock and then studied the effects of NOV and FAM stress on drinking and PTSD phenotypes. NOV stress suppressed the escalation of alcohol intake and preference seen in male controls, but no stress effects were seen on drinking in females. Additionally, NOV males had decreased action potential-independent presynaptic GABA release and delayed postsynaptic GABAA receptor kinetics in the CeA compared to control and FAM males. Despite these changes to alcohol intake and CeA GABA signaling, stressed rats showed broadly similar anxiogenic-like behaviors to our previous comorbid model, suggesting decoupling of the PTSD symptoms from the AUD vulnerability for some of these animals. The collective results show the importance of alcohol history and trauma context in vulnerability to comorbid AUD/PTSD-like symptoms.

Repeated ethanol exposure following avoidance conditioning impairs avoidance extinction and modifies conditioning-associated prefrontal dendritic changes in a mouse model of post-traumatic stress disorder

Treatment of post-traumatic stress disorder is complicated by the presence of alcohol use disorder comorbidity. Little is known about the underlying brain mechanisms. We have recently shown, in mice, that the post-traumatic stress disorder-like phenotype is characterised by the increase and decrease in total dendritic number and length in the prelimbic and infralimbic areas of the medial prefrontal cortex, respectively. Here, we examined whether repeated ethanol exposure would exacerbate these changes and whether this would be associated with difficulty to extinguish passive avoidance behaviour, as an indicator of treatment resistance. We also analysed whether other known trauma-associated changes, like increased or decreased corticosterone and decreased brain-derived neurotrophic factor levels, would also be exacerbated. Male mice underwent trauma exposure (1.5-mA footshock), followed, 8 days later, by a conditioned place preference training with ethanol. Tests for fear sensitization, passive avoidance, anxiety-like behaviour, extinction acquisition and relapse susceptibility were used to assess behaviour changes. Plasma corticosterone and brain-derived neurotrophic factor levels and prefrontal dendritic changes were subsequently measured. Trauma-susceptible mice exposed to ethanol acquired a strong place preference and behaved differently from those not exposed to ethanol, with delayed avoidance extinction and higher avoidance relapse vulnerability. Ethanol potentiated trauma-associated dendritic changes in the prelimbic area and suppressed trauma-associated dendritic changes in the infralimbic area. However, ethanol had no effect on trauma-induced increased corticosterone and decreased brain-derived neurotrophic factor levels. These data suggest that the modification of prefrontal trauma-related changes, due to alcohol use, can characterise, and probably support, treatment-resistant post-traumatic stress disorder.

Disentangling the association between PTSD symptom heterogeneity and alcohol use disorder: Results from the 2019-2020 National Health and Resilience in Veterans Study

Veterans are at increased risk of comorbid posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD) relative to civilians. Few studies have explored the association between distinct PTSD symptoms and AUD in veterans, and existing findings are highly discrepant. This study aimed to address this gap and equivocal association by evaluating which PTSD symptom clusters are most associated with AUD in a veteran sample using the 7-factor 'hybrid' model of PTSD. Data were analyzed from the 2019-2020 National Health and Resilience in Veterans Study (NHRVS), a nationally representative survey of 4069 U.S. veterans. Veterans completed self-report measures to assess current PTSD symptoms and AUD. Multivariable logistic regression and relative importance analyses were conducted to examine associations between the 7-factor model of PTSD symptoms and AUD. Adjusting for sociodemographic, military, trauma factors, and depressive symptoms, scores on the dysphoric arousal (20.7% relative variance explained [RVE]) and externalizing behaviors (19.0% RVE) symptom clusters were most strongly associated with AUD in the full sample, while externalizing behaviors (47.7% RVE), anxious arousal (23.9% RVE), and dysphoric arousal (12.4%) accounted for the majority of explained variance in veterans who screened positive for PTSD. Results of this nationally representative study of U.S. veterans highlight the importance of externalizing behaviors and arousal symptoms of PTSD as potential drivers of AUD in this population. The 7-factor hybrid model of PTSD provides a more nuanced understanding of PTSD-AUD associations, and may help inform risk assessment and more personalized treatment approaches for veterans with and at-risk for AUD.

Associations of substance abuse histories and gambling addiction history with post-traumatic stress symptoms and depressive symptoms among Chinese prisoners

Background: Although there are over two million prisoners in China, few studies have reported the prevalence and correlates of mental health problems in this population. Objective: This study investigated the prevalence rates of trauma exposure, post-traumatic stress disorder (PTSD) and depression among Chinese male prisoners and further examined the associations of substance abuse histories and gambling addiction history with PTSD and depressive symptoms. Method: Participants were 1,484 male prisoners (mean age 35.44 years, sd = 9.66) recruited from a large prison in Guangdong, China. Self-administered standardized questionnaires were used to assess trauma exposure, histories of substance abuse and perceived gambling addiction, social supports, childhood trauma, PTSD and depression. Criminal background information was extracted from jail record. Linear regressions were performed to examine the correlates of PTSD and depressive symptoms. Results: Of these participants, 78.8% had experienced at least one trauma exposure, 26.7% had drug addiction, 85.5% had smoked cigarettes, 70.8% had used alcohol and 21.4% had gambling addiction before incarceration. The prevalence rates of PTSD and depression were 7.1% and 28.8%, respectively. Trauma exposure was significantly associated with PTSD and depressive symptoms, but not substance abuse histories and gambling history except for drinking. Histories of drinking and perceived gambling addiction were significantly related to PTSD and depressive symptoms after adjustment of demographics, criminal background, health status, social supports, childhood trauma and lifetime traumatic exposure. Conclusions: Trauma exposure, PTSD and depression are common among prisoners. Furthermore, this study for the first time demonstrates a significant relationship between gambling addiction history and PTSD.

Alcohol to down-regulate negative and positive emotions: Extending our understanding of the functional role of alcohol in relation to posttraumatic stress disorder

INTRODUCTION

Functional models of posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD) underscore the role of internally-driven negative reinforcement. However, with the focus of these models being on negative emotions broadly, there is limited understanding of the effect of alcohol use to down-regulate specific forms of negative emotions or positive emotions generally. Among populations characterized by PTSD, there is growing evidence that positive emotions may elicit aversive reactions and thus be intentionally reduced, including via alcohol use.

OBJECTIVE

The current study examined the associations among PTSD symptom severity, alcohol use to down-regulate both negative (i.e., despondency and anger) and positive emotions, and alcohol misuse.

METHOD

Data were collected from 320 trauma-exposed, substance-using individuals in the community (M age = 35.78, 46.9% women).

RESULTS

Individuals with greater PTSD symptom severity reported significantly higher alcohol use to down-regulate despondency, anger, and positive emotions, which, in turn, were linked to greater alcohol misuse.

CONCLUSIONS

Alcohol use may serve to down-regulate both negative (i.e., despondency and anger) and positive emotions, and these functions may help to explain the association of PTSD symptom severity to alcohol misuse. PTSD-AUD models may benefit from specifying a negatively reinforcing function of alcohol use in the context of positive emotions.

Risk for Mental Disorders Associated With Sexual Assault: A Meta-Analysis

Sexual assault (SA) is a common form of trauma that is associated with numerous deleterious outcomes. Understanding the relative prevalence of psychiatric diagnoses in people who have been sexually assaulted versus people who have not been assaulted could help to prioritize assessment and intervention efforts, but there has been no quantitative review of this topic. A search of PsychINFO, ProQuest Digital Dissertations and Theses, and Academic Search Premier for articles dated between 1970 and 2014 was conducted, and unpublished data were obtained. Eligible studies used diagnostic interviews to assess Diagnostic and Statistical Manual of Mental Disorders diagnoses in both individuals experiencing adolescent/adult and/or lifetime SA and unassaulted individuals. The search yielded 171 eligible effects from 39 studies representing 88,539 participants. Meta-regression was used to aggregate the prevalence of psychiatric diagnoses in sexually assaulted and unassaulted samples as well as calculate odds ratios reflecting the difference between these prevalence estimates. Results indicated that most disorders were more prevalent in survivors of SA, and depressive disorders and posttraumatic stress disorder (PTSD) were especially prevalent. Disorder-specific differences in odds ratios were observed as a function of sample type, type of comparison group, and time frame of SA. Service providers should be prepared to address depressive disorders and PTSD in survivors of SA, and interventions that prevent the development of these disorders are especially needed.

Parallel process modeling of posttraumatic stress disorder symptoms and alcohol use severity in returning veterans

Posttraumatic stress disorder (PTSD) is associated with higher levels of alcohol use among returning veterans. Persistent PTSD symptoms can predict alcohol use over the span of hours, days, weeks, and months; however, knowledge of the strength of these associations beyond 1 year remains limited. In this study, we examined the 6-year course of co-occurring PTSD and alcohol use to explicate the directional and possible enduring effects of PTSD on alcohol use severity over time. Our study included 1,649 returning veterans (M age = 37.49; SD = 9.88) who completed 4 waves of data collection between 2010 and 2016. We used parallel process modeling to evaluate temporal associations between PTSD symptoms and alcohol use severity across 4 (T1-T4) waves of data collection. PTSD and alcohol use both decreased significantly between T1 and T4 and in tandem with one another. That is, decreases in one were associated with decreases in the other. Further, individuals with higher levels of PTSD symptom severity at T1 reported accelerated rates of change regarding PTSD symptoms and alcohol use over time. Conversely, baseline alcohol use severity did not predict the rate of change in PTSD symptom severity. Our findings provide evidence of a prospective association between PTSD symptoms and alcohol use and highlight the potential for reciprocal associations between them over the span of years. Importantly, our demonstration of the natural course of co-occurring PTSD symptoms and alcohol use suggests further trauma-focused and combined intervention strategies are needed to disrupt this enduring and reciprocal pattern among returning veterans. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Discussing substance use with clients during the COVID-19 pandemic: A motivational interviewing approach

During the COVID-19 pandemic, trauma-exposed individuals may have heightened risk for substance use. Using substances to cope may contribute to the development of problematic substance use over time. It is imperative to initiate conversations about substance use with clients during this time and motivational interviewing offers an ideal framework for doing so. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Bidirectional relationship of posttraumatic stress disorder (PTSD) symptom severity and alcohol use over the course of integrated treatment

Posttraumatic stress disorder (PTSD) and alcohol use disorder commonly co-occur. Little is known about how symptoms of one affect subsequent week symptoms of the other during the course of integrated treatment for both disorders. The sample included 107 veterans who were randomized to receive either Concurrent Treatment of PTSD and Substance Use Disorder Using Prolonged Exposure (COPE; an exposure-based trauma focused treatment) or Seeking Safety (SS; a present-focused coping skills-based treatment) and completed measures of PTSD and alcohol use at every other session. Multilevel models estimated the prospective associations between PTSD and alcohol use during treatment. Results indicated that greater PTSD symptom severity was associated with greater future alcohol use (b = 0.20, p = .024), and greater alcohol use was associated with greater future PTSD symptom severity (b = 0.13, p = .003). The effect size for PTSD symptoms to future alcohol use was larger than the reciprocal relationship. When using lagged PTSD severity to predict future drinking, results revealed that clinically significant differences in PTSD severity levels were associated with comparably large differences in drinking. Treatment condition did not moderate the effect of PTSD symptom severity on alcohol use (or the reciprocal relationship). Findings lend support to the mutual maintenance model of addiction. Integrated treatments that treat both PTSD and alcohol use may be preferential to sequential model of care where individuals are expected to achieve abstinence or reduced use prior to receiving trauma-focused treatment. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Refinement and Pilot Testing of a Brief, Early Intervention for PTSD and Alcohol Use Following Sexual Assault

Experiencing a sexual assault can have long-lasting negative consequences including development of posttraumatic stress disorder (PTSD) and alcohol misuse. Intervention provided in the initial weeks following assault can reduce the development of these chronic problems. This study describes the iterative treatment development process for refining a brief intervention targeting PTSD and alcohol misuse for women with recent sexual assault experiences. Experts, treatment providers, and patients provided feedback on the intervention materials and guided the refinement process. Based on principles of cognitive change, the final intervention consists of one in-person session and four coaching calls targeting beliefs about the assault and about drinking behavior. Initial feasibility and acceptability data are presented for patients enrolled in an open trial (N = 6). The intervention was rated as helpful, not distressing, and interesting by patients and all patients completed the entire treatment protocol. A large decrease in PTSD symptoms pre- to post-intervention was observed. A small effect on decreasing alcohol consequences also emerged, although drinks consumed per week showed a slight increase, not a decrease, over the course of the intervention. Applications of this intervention and next steps for testing efficacy are presented.

The effect of pre-existing alcohol use disorder on the risk of developing posttraumatic stress disorder: results from a longitudinal national representative sample

Background: There is inconsistent evidence in the literature as to whether or not Alcohol Use Disorder (AUD) is a risk factor for Post-Traumatic Stress Disorder (PTSD).Objectives: We evaluated the risk of developing PTSD after trauma exposure in individuals with AUD. As a secondary analysis, we also tested if alcohol dependence or alcohol abuse separately increased the risk of PTSD development. We also explored the effect of AUD on exposure to various traumas.Methods: Longitudinal data was obtained from 30,180 individuals with and without AUD from National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) waves I and II. Using propensity score methods, we matched individuals with AUD (alcohol abuse and/or dependence using DSM-IV criteria) to those without AUD at baseline on demographic, familial, and clinical factors to estimate the risk of PTSD development after trauma exposure. Data were adjusted for complex survey methods.Results: Individuals with AUD had an increased risk of being exposed to various traumas between wave I and II (60.6% vs. 48.3% of controls). Among individuals exposed to trauma between the two waves (N = 14,107), AUD had no effect on subsequent PTSD development after matching and controlling for covariates (OR: 1.00; 95%CI: 0.72-1.39; p = .99). However, those with alcohol dependence only did have an effect on subsequent PTSD development (OR: 1.76; 95%CI: 1.05-2.95; p = .03).Conclusion: In individuals with alcohol dependence the experience of trauma increases the risk of developing PTSD. These findings suggest that prevention methods from PTSD after trauma exposure for individuals with alcohol dependence are needed.

Exploring the Relationships Between Eating Disorders and Mental Health in Women Attending Residential Substance Use Treatment

Objective: Comorbid eating disorders (EDs) and ED symptoms are highly prevalent among women with substance use disorders and may be a barrier to recovery. Higher rates of psychiatric illness are common when more than one disorder is present. Yet little is known about the rates and risk factors for EDs/ED symptoms in women attending treatment centers in Australia. The primary aim is to examine the prevalence of ED symptoms among women attending treatment centers. This study also examines past physical and sexual abuse and mental health as specific predictors of EDs/ED symptoms. Methods: Participants were 1,444 women attending residential treatment for substance use issues provided by the Salvation Army in Australia. Measures included the Addiction Severity Index, the Eating Disorder Screen for Primary Care, medication use, hospitalization, mental health, and past abuse. Results: Alcohol was the primary substance of concern for 53.3% of the women, followed by amphetamines (17.5%), and the mean age was 37.83 years (SD = 10.8). Nearly 60% of women screened positive for ED symptoms and 32% reported a previous or current ED. Women with a history of sexual abuse had significantly greater odds (1.96) of positive screening for an ED compared to those without a history of sexual abuse. Similarly, compared to women without a history of physical abuse, those who did have a history had significantly higher odds (1.59) of a positive screen for an ED. These women were also significantly more likely to have had a health care provider recommend they take medications for psychological or emotional problems in the past 30 days, χ²(1) = 8.42, p = .004, and during their lifetime, χ²(1) = 17.89, p < .001. They also had a significantly greater number of overnight hospitalizations for medical problems compared to those who screened negative, t(137) = -2.19, p = .03. Conclusions: Women with comorbid substance use issues and EDs are highly likely to have a history of past abuse. This combination of comorbidities makes treatment and recovery difficult. Increased awareness and research are required to explore integrated approaches to treatment that accommodate these vulnerabilities and improve long-term outcomes.

Early Interventions for the Prevention of Posttraumatic Stress Symptoms in Survivors of Critical Illness: A Qualitative Systematic Review

OBJECTIVES

Posttraumatic stress disorder among survivors of critical illness is of public health importance, as it is common and reduces patient quality of life. The objective of this systematic review was to collate the world's literature on interventions aimed at preventing posttraumatic stress disorder among survivors of critical illness.

DATA SOURCES

We performed a search of CENTRAL, MEDLINE, EMBASE, CINAHL, and clinical trials registry platforms, with no restriction to language using a comprehensive strategy.

STUDY SELECTION

Study inclusion criteria were as follows: 1) adult human subjects, 2) patients treated in an ICU setting, 3) intervention arm aimed at reducing posttraumatic stress disorder symptoms, 4) use of a control arm, and 5) an outcome measure assessing development of acute stress or posttraumatic stress disorder symptoms.

DATA EXTRACTION

We performed a qualitative analysis to collate and summarize effects of identified interventions according to the recommended methodology from the Cochrane Handbook.

DATA SYNTHESIS

Seventeen studies met all inclusion and no exclusion criteria. There was heterogeneity in interventions and outcome measures used. All studies had some concern for risk of bias as per the Cochrane tool for assessing risk of bias. In eight of 12 studies (67%) testing early interventions (i.e., initiated in the ICU course) and one of five studies (20%) testing delayed interventions following ICU discharge, posttraumatic stress disorder symptoms were decreased among the intervention group compared with controls.

CONCLUSIONS

Despite a paucity of high-quality clinical investigations, the preponderance of evidence to date suggests that 1) posttraumatic stress disorder among survivors of critical illness may be preventable and 2) early interventions may be the most effective.

Post-traumatic stress symptoms and sense of coherence in proximity to intensive care unit discharge

BACKGROUND

Post-traumatic stress (PTS) symptoms following intensive care unit (ICU) treatment can lead to post-traumatic stress disorder and represent a severe health burden. In trauma patients, a strong sense of coherence (SOC) is associated with fewer PTS symptoms. However, this association has not been investigated in a general ICU sample.

AIMS AND OBJECTIVES

To examine the occurrence of PTS symptoms in general ICU patients early after ICU discharge and to assess possible associations between PTS symptoms and SOC, ICU memory, pain, and demographic and clinical characteristics.

DESIGN

This was a cross-sectional study.

METHODS

Adult patients aged ≥18 years admitted for ≥24 hours to five ICUs between 2014 and 2016 were recruited. PTS symptoms and SOC were measured at the ward within the first week after discharge from the ICU using the Posttraumatic Stress Scale-10 and Sense of Coherence Scale-13. Multiple linear regression analysis was used to identify associations between PTS symptoms and SOC and the selected independent variables.

RESULTS

A total of 523 patients were included (17.8% trauma patients; median age 57 years [range 18-94]; 53.3% male). The prevalence of clinically significant PTS symptoms was 32%. After adjustments for gender and age, lower SOC (P < 0.001), more ICU delusional memories (P < 0.001), greater pain interference (P < 0.001), not being a trauma patient (P = 0.02), and younger age (P = 0.03) were significantly associated with more PTS symptoms.

CONCLUSIONS

One third of patients experienced clinically relevant PTS symptoms early after discharge from the ICU. In the present study, SOC, delusional memory, pain interference, younger age, and not being a trauma patient were factors associated with more PTS symptoms.

RELEVANCE TO CLINICAL PRACTICE

Early individual follow up after ICU discharge focusing on pain relief and delusional memory may reduce PTS symptoms, with a potential of improving rehabilitation.

Polydrug use disorders in individuals with opioid use disorder

BACKGROUND

Understanding the association of polydrug use disorders (PUD) with psychosocial and clinical factors is essential for the treatment of individuals with opioid use disorder (OUD). The aim of this study is to examine whether there is an association between childhood maltreatment, mood disorders, anxiety disorders, personality disorders, or posttraumatic stress disorder (PTSD) and PUD in individuals with OUD.

METHODS

We used data from 356 individuals with OUD in the past 12 months from a nationally representative database in the United States. PUD patients were classified into two groups: a group with additional one substance disorder (OUD + 1) and that with two or more additional substance disorders (OUD + 2). We conducted multivariate logistic regression to predict the PUD status, after adjustment for confounders including childhood maltreatment.

RESULTS

Among all individuals, 57.3% were polydrug users (n = 204) and 42.7% were not (n = 152). There was a high prevalence of childhood maltreatment in both groups, ranging from 16.1% to 59.5%, but the difference was not statistically significant. After adjustment for confounders, we found an association between past-year PTSD and OUD + 2 (odds ratio: 3.98; 95% confidence interval: 1.15-13.72; p = 0.03) but not with OUD + 1.

CONCLUSION

PTSD is highly prevalent in individuals with OUD using multiple substances and could influence PUD. We recommend screening for PTSD in cases of PUD. Future studies should evaluate the effect of PTSD treatment on PUD.

Post-traumatic Stress Disorder in Victims of Sexual Assault With Pre-assault Substance Consumption: A Systematic Review

Background: Post-traumatic stress disorder (PTSD) and substance consumption commonly co-occur in victims of sexual assault. Substance consumption can occur pre- andi/or post-assault. Pre-assault substance consumption may have an impact on the subsequent development of PTSD. This review aims to provide an overview of current understanding of the effects of acute substance intoxication and chronic pre-assault problematic substance use on symptoms of PTSD amongst individuals who were victims of sexual assault. Methods: PsycINFO, EMBASE, and MEDLINE were searched using terms related to PTSD, sexual assault, and substance consumption. These yielded 2,121 articles, 268 of which were retrieved for more detailed evaluation and 13 of these met inclusion criteria and were appraised in full. Results: Overall, the reviewed papers supported our hypothesis that acute substance intoxication and chronic pre-assault problematic substance use are associated with fewer initial PTSD symptoms but less improvement over time, resulting in slower overall PTSD recovery. They also highlighted post-assault characterological self-blame and negative social reactions as mediators of recovery in the context of pre-assault substance consumption. Conclusions: Acute substance intoxication and chronic pre-assault problematic substance use appear to have an impact on the development of PTSD symptoms amongst victims of sexual assault. The importance of developing early interventions and routine screening and assessment for PTSD and pre-assault substance consumption is emphasized. The limited research on male victims and on substances other than alcohol is highlighted.

PTSD symptoms and alcohol-related problems among veterans: Temporal associations and vulnerability

Posttraumatic stress disorder (PTSD) is associated with elevated risk of both alcohol use disorder (AUD) and related conduct problems, which are associated with behavioral and emotional dysregulation. We conducted an intensive longitudinal burst design study with 10 weeks of experience sampling over the course of 1.5 years with 250 veterans of recent conflicts. We tested time-series models of daily associations between posttraumatic stress symptoms (PTSS), alcohol dependence syndrome, and conduct problems. Exacerbations of PTSS predicted higher dependence syndrome and conduct problems the next day. This effect was significant after controlling for both concurrent (i.e., same-day) associations between drinking and the outcomes as well as the strength of associations between the outcomes from one day to the next (i.e., autoregression). Affect lability and disinhibition were hypothesized vulnerability factors increasing the strength of within-person predictors of dependence syndrome and conduct problems. Lability and disinhibition were associated with greater dependence syndrome symptoms and conduct problems over the follow-up period. Consistent with expectation, lability rather than disinhibition increased the association between drinking and dependence syndrome as well as the strength of association between dependence syndrome symptoms from one day to the next. Moderating effects of disinhibition in the conduct problems model were not significant. Importantly, results indicated reciprocal associations over time. Lability potentiated the association between dependence syndrome symptoms and next day PTSS, whereas disinhibition potentiated the association between conduct problems and next day PTSS. Results demonstrate complex dynamic associations between PTSS, AUD symptoms, and conduct problems over time indicative of broad regulatory impairments. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Functional and Psychiatric Correlates of Comorbid Post-Traumatic Stress Disorder and Alcohol Use Disorder

Post-traumatic stress disorder (PTSD) and alcohol use disorder (AUD) are common comorbid conditions that affect large segments of the population. Individuals with comorbid PTSD/AUD face greater clinical and functional stressors than those with diagnoses of either PTSD or AUD alone. The purpose of this article is to review the phenomenology and functional associations of PTSD/AUD and address the common social, occupational, and psychological concerns associated with both disorders. Given the increased problems associated with comorbid PTSD/AUD, clinical and research efforts should focus on targeting functional and psychosocial problems in conjunction with psychiatric symptoms.

PTSD symptom presentation among people with alcohol and drug use disorders: Comparisons by substance of abuse

Posttraumatic stress disorder (PTSD) and substance use disorders (SUDs) commonly co-occur, and there is some evidence to suggest that PTSD symptom clusters are differentially related to various substances of abuse. However, few studies to date have compared PTSD symptom patterns across people with different types of SUDs, and fewer still have accounted for the presence of comorbidity across types of SUDs in understanding symptom patterns. Thus, in the current study, we use a treatment-seeking sample of people with elevated symptoms of PTSD and problem alcohol use to explore differential associations between past-year SUDs with active use and PTSD symptoms, while accounting for the presence of multiple SUDs. When comparing alcohol and drug use disorders, avoidance symptoms were elevated in those with alcohol use disorder, and hyperarousal symptoms were elevated in those who had a drug use disorder. In the subsample with alcohol use disorder, hyperarousal symptoms were elevated in people with co-occurring cocaine use disorders and numbing symptoms were elevated in people with co-occurring sedative/hypnotic/anxiolytic use disorder. These findings provide evidence for different symptom cluster patterns between PTSD and various types of SUDs and highlight the importance of examining the functional relationship between specific substances of abuse when understanding the interplay between PTSD and SUDs.

A Randomized Clinical Trial Examining the Effect of Video-Based Prevention of Alcohol and Marijuana Use Among Recent Sexual Assault Victims

BACKGROUND

This study examined whether a brief video intervention (Prevention of Post-Rape Stress [PPRS]) delivered in the emergency department to recent sexual assault (SA) victims reduced alcohol and marijuana use at 3 points over the course of a 6-month follow-up compared to treatment as usual (TAU) and an active control condition (Pleasant Imagery and Relaxation Instruction [PIRI]). Prior assault history, minority status, and pre-SA substance use also were examined as moderators of intervention efficacy.

METHODS

Women aged 15 and older (N = 154) who participated in a post-SA medical forensic examination were randomly assigned to watch the PPRS video (n = 54) or the PIRI video (n = 48) or receive TAU (n = 52) and completed at least 1 follow-up assessment targeted at 1.5 (T1), 3 (T2), or 6 (T3) months following the examination.

RESULTS

Regression analyses revealed that, relative to TAU, PPRS was associated with less frequent alcohol use at 6 months post-SA among women reporting pre-SA binge drinking and minority women. Relative to TAU, PPRS also was associated with fewer days of marijuana use at T1 among those who did not report pre-SA marijuana use and prior SA. Findings for pre-SA marijuana use were maintained at T3; however, findings for prior SA shifted such that PPRS was associated with fewer days of marijuana use at T3 for women with a prior SA.

CONCLUSIONS

PPRS may be effective at reducing substance use for some recent SA victims, including those with a prior SA history, a prior substance use history, and minority women.

Treating PTSD in Pregnant and Postpartum Rural Women with Substance Use Disorders

The co-occurrence of posttraumatic stress disorder and substance use disorder (PTSD-SUD) can pose significant problems for rural pregnant and postpartum women (PPW) and the well-being of their children. Although effective treatments exist, PPW experience limitations in their ability to access and engage in treatment that may be compounded by various aspects of rural settings, so providers must be attentive to these barriers in order to address this pressing public health need. In addition, as part of increasing rural access to care, it is important to consider the costs and benefits to PPW of selecting exposure-based techniques (e.g., prolonged exposure) to disseminate. The current article discusses the treatment of PTSD-SUD in rural PPW in the context of the authors' experiences providing an exposure-based cognitive behavioral treatment for PTSD in this population. Barriers to treatment access and engagement are discussed and recommendations are provided.

Sexual assault victimization and psychopathology: A review and meta-analysis

Sexual assault (SA) is a common and deleterious form of trauma. Over 40years of research on its impact has suggested that SA has particularly severe effects on a variety of forms of psychopathology, and has highlighted unique aspects of SA as a form of trauma that contribute to these outcomes. The goal of this meta-analytic review was to synthesize the empirical literature from 1970 to 2014 (reflecting 497 effect sizes) to understand the degree to which (a) SA confers general risk for psychological dysfunction rather than specific risk for posttraumatic stress, and (b) differences in studies and samples account for variation in observed effects. Results indicate that people who have been sexually assaulted report significantly worse psychopathology than unassaulted comparisons (average Hedges' g=0.61). SA was associated with increased risk for all forms of psychopathology assessed, and relatively stronger associations were observed for posttraumatic stress and suicidality. Effects endured across differences in sample demographics. The use of broader SA operationalizations (e.g., including incapacitated, coerced, or nonpenetrative SA) was not associated with differences in effects, although including attempted SA in operationalizations resulted in lower effects. Larger effects were observed in samples with more assaults involving stranger perpetrators, weapons, or physical injury. In the context of the broader literature, our findings provide evidence that experiencing SA is major risk factor for multiple forms of psychological dysfunction across populations and assault types.

High dose alcohol consumption predicts less reduction in post-traumatic stress symptoms after a campus mass shooting

BACKGROUND

Recognizing that alcohol might affect subsequent processing of trauma-related information, this study examined whether high dose alcohol consumption (HDAC) following a campus mass shooting affected the relation between shooting exposure and post-traumatic stress symptoms (PTSS).

METHODS

Female participants (N = 691) recorded levels of physical exposure to the shooting event, alcohol use, and PTSS 1 month following the shooting event and 8 months later.

RESULTS

No evidence was found to suggest that pre-shooting HDAC moderated the relationship between trauma exposure and PTSS 1 month following the shooting. HDAC in the month following the shooting predicted less resolution of PTSS 8 months later. Specifically, at higher (but not lower) levels of HDAC, shooting exposure was associated with less reduction in PTSS from 1 to 8 months post-trauma. Several alternate explanations were ruled out.

CONCLUSIONS

Less reduction in PTSS seems to occur at high levels of both shooting exposure and HDAC. Theoretical implications and directions for future research are discussed.

Mental Health Help Seeking Among Traumatized Individuals: A Systematic Review of Studies Assessing the Role of Substance Use and Abuse

OBJECTIVE

Prior research has suggested that competing neurobehavioral decision-making processes might affect health outcomes among traumatized populations. Regulatory imbalances to impulsive and executive decision systems are affected by high levels of stress, including stress resulting from traumatic events. Such regulatory imbalances have been associated with addictive behaviors. However, it is not well known whether addictive behavior increases or decreases the likelihood of utilization of behavioral health services among traumatized populations. The aim of this study is to systematically review mental health utilization studies targeting traumatized populations to determine the direction of association between substance use and behavioral health utilization.

METHOD

Databases of literature were searched in a systematic manner, and 37 relevant studies were recovered and analyzed.

FINDINGS

Of the 37 relevant studies that included addictive behaviors as a predictor of utilization, 16 showed a positive significant relationship and 6 showed a negative significant relationship. Studies showing a negative significant relationship used younger samples with more recent trauma exposure.

CONCLUSION

Studies have shown that for the most part, substance abuse increases the likelihood of utilization, except among younger populations with more recent trauma. Longitudinal studies that access how utilization evolves over time among traumatized populations and interacts with posttraumatic stress disorder (PTSD) and substance abuse severity are necessary to better understand how decision-making processes of traumatized individuals may increase the likelihood of chronic PTSD.

The unique associations of sexual assault and intimate partner violence with PTSD symptom clusters in a traumatized substance-abusing sample

OBJECTIVE

There is a high occurrence of sexual assault (SA) and intimate partner violence (IPV) among people with substance use disorders and an established association between substance use and posttraumatic stress disorder (PTSD), but no research has examined associations between combinations of these traumas and PTSD symptom profiles among people who abuse substances. Thus, this study aimed to examine how combinations of SA and IPV histories contribute to the severity of symptoms within PTSD symptom clusters above and beyond the impact of exposure to other traumas in a substance abusing population.

METHOD

Participants were men and women (N = 219) with trauma histories seeking treatment in a substance abuse facility. Multivariate analyses of covariance examined differences on Clinician Administrated PTSD Scale cluster scores in people with experiences of SA and/or IPV in comparison to people with other types of trauma, controlling for number of PTSD criterion A events.

RESULTS

SA was associated with increased symptom severity across all 3 PTSD symptom clusters, whereas IPV was not associated with differences in cluster scores. In addition, survivors of IPV had consistent levels of avoidance symptoms regardless of whether they had also experienced SA, but people who had not experienced IPV only evidenced increased avoidance symptoms when they had experienced SA. Follow-up analyses testing gender differences indicated that these findings were largely similar for men and women.

CONCLUSIONS

SA should be assessed in people in substance use treatment settings to conceptualize their unique presentations of PTSD symptoms and inform treatment planning. (PsycINFO Database Record

A population-based study of help seeking and self-medication among trauma-exposed individuals

Epidemiologic studies of trauma highlight the imbalance between prevalence of psychiatric diagnoses and help seeking. We investigated prevalence and correlates of help seeking and self-medication in Norwegian adults with trauma history with a focus on common posttrauma outcomes of posttraumatic stress disorder (PTSD) and substance use disorders (alcohol or drug). Participants reporting at least 1 PTSD symptom (n = 307) were asked if they consulted with a doctor/another professional (help seeking) or used drugs/alcohol (self-medication) for trauma-related problems. PTSD, alcohol abuse or dependence (AUD), and drug use or dependence (DUD) were assessed via structured diagnostic interviews. Help seeking and self-medication were endorsed by 37.4% and 10.4% of the sample, respectively. As compared to the full sample, help seeking was endorsed at a greater rate in individuals with PTSD (χ2 = 8.59, p = .005) and at a lower rate in those with AUD (χ2 = 7.34, p < .004). Self-medication was more likely to be endorsed by individuals with PTSD than without PTSD (χ2 = 25.68, p < .001). In regression analyses, PTSD was associated with increased likelihood of self-medication (odds ratio [OR] = 4.56) and help seeking (OR = 2.29), while AUD was associated with decreased likelihood of help-seeking (OR = .29). When self-medication was included as a predictor, PTSD was no longer associated with help seeking, although AUD remained inversely associated. PTSD and AUDs have a nuanced relationship with formal help seeking as well as the use of substances to cope. Trauma-exposed individuals are likely engaging in adaptive and maladaptive coping strategies, the latter of which may be compounding distress. (PsycINFO Database Record

Examination of the dynamic interplay between posttraumatic stress symptoms and alcohol misuse among combat-exposed Operation Enduring Freedom (OEF)/Operation Iraqi Freedom (OIF) Veterans

BACKGROUND

Although alcohol misuse co-occurs with PTSD symptoms at a strikingly high rate (i.e., nearly 52% of men and 28% of women with PTSD also meet diagnostic criteria for an Alcohol Use Disorder), the functional associations between these symptom types remain unclear.

METHODS

The current study sought to clarify the nature of posttraumatic stress-alcohol misuse relations by employing a prospective longitudinal methodology-the latent difference score approach-to examine dynamic change in posttraumatic stress symptoms and alcohol misuse among 478 combat-exposed Veterans completing a longitudinal survey of post-deployment mental and physical health. This study builds on the existing literature, as most prior research has been limited to cross-sectional studies and has not explored prospective relations between specific PTSD symptom clusters and alcohol misuse.

RESULTS

Consistent with the self-medication model, results indicated that PTSD symptoms demonstrate a prospective and proximal association with alcohol misuse during the assessment period; however, alcohol misuse did not appear to be a unique contributor to overall PTSD symptom exacerbation over time. Examination of individual PTSD symptom clusters revealed that more severe symptoms of intrusion and numbing, but not avoidance and hyperarousal, predicted greater alcohol misuse at subsequent time intervals.

LIMITATIONS

The constructs examined within this investigation relied on self-report data; diagnostic criteria for PTSD and/or Alcohol Use Disorders were not assessed. Future work may benefit from replicating these findings in clinical populations formally diagnosed with PTSD via clinician-administered structured interviews.

CONCLUSIONS

Findings underscore the importance of addressing PTSD symptoms in the context of alcohol treatment to facilitate improved drinking outcomes.

Does negative affect mediate the relationship between daily PTSD symptoms and daily alcohol involvement in female rape victims? Evidence from 14 days of interactive voice response assessment

The negative reinforcement model of addiction posits that individuals may use alcohol to reduce negative affective (NA) distress. The current study investigated the mediating effect of daily NA on the relationship between daily PTSD symptoms and same-day and next-day alcohol involvement (consumption and desire to drink) in a sample of 54 non-treatment-seeking female rape victims who completed 14 days of interactive voice response assessment. The moderating effect of lifetime alcohol use disorder diagnosis (AUD) on daily relationships was also examined. Multilevel models suggested that NA mediated the relationship between PTSD and same-day, but not next-day alcohol involvement. NA was greater on days characterized by more severe PTSD symptoms, and alcohol consumption and desire to drink were greater on days characterized by higher NA. Furthermore, daily PTSD symptoms and NA were more strongly associated with same-day (but not next-day) alcohol consumption and desire to drink for women with an AUD than without. Results suggest that NA plays an important role in female rape victims' daily alcohol use. Differences between women with and without an AUD indicate the need for treatment matching to subtypes of female rape victims.

Drinking motives moderate daily relationships between PTSD symptoms and alcohol use

Posttraumatic stress disorder (PTSD) and alcohol dependence (AD) frequently co-occur, although results of both cross-sectional and longitudinal studies evaluating the nature of their relationship have been mixed. There has been varied support for competing models explaining how these conditions influence one another. To assess both the self-medication and mutual maintenance models, as well as examine the potential moderating role of drinking motives, the current study used Generalized Estimating Equations to evaluate daily associations for an average of 7.3 days between PTSD symptoms and alcohol use in a mixed-gender sample of individuals who met criteria for both PTSD and AD. Results generally supported a self-medication model with elevated PTSD symptoms predictive of greater alcohol use on that same day and on the following day. Contrary to a mutual maintenance model prediction, drinking did not predict next-day PTSD symptoms. Results also indicated that both coping and enhancement drinking motives were significant moderators of the PTSD and drinking relationships, suggesting that these relationships may be more or less salient depending on an individual's particular drinking motivations. For example, among those higher on coping drinking motives, a 1-unit increase in PTSD symptom severity was associated with a 35% increase in amount of alcohol consumed the same day, while among those low on coping drinking motives, a 1-unit PTSD increase was associated with only a 10% increase in alcohol consumption. We discuss implications of these findings for the larger literature on the associations between PTSD and alcohol use as well as for clinical interventions. (PsycINFO Database Record (c) 2014 APA, all rights reserved).

Analyzing multiple outcomes in clinical research using multivariate multilevel models

OBJECTIVE

Multilevel models have become a standard data analysis approach in intervention research. Although the vast majority of intervention studies involve multiple outcome measures, few studies use multivariate analysis methods. The authors discuss multivariate extensions to the multilevel model that can be used by psychotherapy researchers.

METHOD AND RESULTS

Using simulated longitudinal treatment data, the authors show how multivariate models extend common univariate growth models and how the multivariate model can be used to examine multivariate hypotheses involving fixed effects (e.g., does the size of the treatment effect differ across outcomes?) and random effects (e.g., is change in one outcome related to change in the other?). An online supplemental appendix provides annotated computer code and simulated example data for implementing a multivariate model.

CONCLUSIONS

Multivariate multilevel models are flexible, powerful models that can enhance clinical research.

Risk pathways among traumatic stress, posttraumatic stress disorder symptoms, and alcohol and drug problems: a test of four hypotheses

The present study utilized longitudinal data from a community sample (n = 377; 166 trauma-exposed; 54% males; 73% non-Hispanic Caucasian; 22% Hispanic; 5% other ethnicity) to test whether pretrauma substance use problems increase risk for trauma exposure (high-risk hypothesis) or posttraumatic stress disorder (PTSD) symptoms (susceptibility hypothesis), whether PTSD symptoms increase risk for later alcohol/drug problems (self-medication hypothesis), and whether the association between PTSD symptoms and alcohol/drug problems is attributable to shared risk factors (shared vulnerability hypothesis). Logistic and negative binomial regressions were performed in a path analysis framework. Results provided the strongest support for the self-medication hypothesis, such that PTSD symptoms predicted higher levels of later alcohol and drug problems, over and above the influences of pretrauma family risk factors, pretrauma substance use problems, trauma exposure, and demographic variables. Results partially supported the high-risk hypothesis, such that adolescent substance use problems increased risk for assaultive violence exposure but did not influence overall risk for trauma exposure. There was no support for the susceptibility hypothesis. Finally, there was little support for the shared vulnerability hypothesis. Neither trauma exposure nor preexisting family adversity accounted for the link between PTSD symptoms and later substance use problems. Rather, PTSD symptoms mediated the effect of pretrauma family adversity on later alcohol and drug problems, thereby supporting the self-medication hypothesis. These findings make important contributions to better understanding the directions of influence among traumatic stress, PTSD symptoms, and substance use problems.