Symptoms of traumatic stress and substance use in a non-clinical sample of young adults

Traumatic stress and alcohol-related disordered eating in a college sample

The current study examined the association between posttraumatic stress symptoms and disordered eating behaviors related to alcohol consumption (i.e., "drunkorexia"). Participants: Participants were 478 undergraduate students at a university in the southeastern United States. Method: Participants completed online self-report questionnaires related to alcohol-related disordered eating and compensatory behaviors, posttraumatic stress symptoms, problematic drinking, and weight and shape concerns. Results: Results found that posttraumatic stress symptoms, body weight and shape concerns, and problematic drinking were independent predictors of alcohol-related disordered eating. Conclusion: These findings confirm previous research that symptoms of eating disorders and symptoms of problem drinking predict disordered eating patterns surrounding alcohol use and further indicate that trauma may play an important role in such behaviors. Results have implications for trauma-informed treatment for college students presenting with "drunkorexia."

The Desire to Dissociate Scale: factor analysis, cross-cultural findings, and links to substance-induced dissociation

BACKGROUND

Past research identified that a desire for dissociative experiences, rather than dissociative tendencies, mediate the relationship between early sexual abuse and problem drinking in college students. Desire to dissociate was conceptualized as a mechanism facilitating substance-induced dissociation or the use of substances to achieve dissociative-like experiences and was measured using a modified version of the Dissociative Experiences Scale-II. The validity and cross-cultural generalizability of the modified scale are not yet known.

OBJECTIVES

The current study examined the psychometric properties of the modified scale, exploring findings across U.S. and Filipino college samples, and explored how the desire to dissociate construct related to other variables linked to substance-induced dissociation. Methods: Participants were recruited across two U.S. samples and one Filipino sample (N = 2404; 72% female). Instead of asking "how often do you experience" dissociative items, 14-items from the original scale were selected and individuals were asked "how often would you like to experience" items.

RESULTS

Results supported the validity of the Desire to Dissociate Scale (DDS) with a bifactor model best fitting the data in U.S. and Filipino samples. The bifactor model identified that the DDS primarily measured a general 'desire to dissociate' factor and two specific factors comprised smaller portions of the variance. DDS scores were positively correlated with trauma-related and alcohol use variables including drinking to cope, variables conceptually consistent with theories of substance-induced dissociation.

CONCLUSION

Clinical implications address avoidant coping patterns and differences in specific factor findings between U.S. and Filipino samples.

PTSD Symptom Severity, Cannabis, and Gender: A Zero-Inflated Negative Binomial Regression Model

INTRODUCTION

In the general population, significant relations have been shown between experienced trauma and cannabis use. Approximately three out of four college students report experiencing at least one-lifetime traumatic event, putting them at greater risk for developing substance use disorder (SUD), and college students report using cannabis to cope with negative effect and stress. However, PTSD symptom severity predicting cannabis use in the college population has not been investigated.

METHODS

This cross-sectional survey study investigated the relation between PTSD symptom severity and cannabis use, and explored the moderating effect of gender on this relation, using a non-directional, exploratory analysis, in a sample of college students (N = 536; 68% female). Due to excessive zero values in the primary outcome, a zero-inflated negative binomial regression model was used.

RESULTS

Gender predicted number of cannabis using days [incidence rate ratio (IRR) = 2.17; 95%CI = 1.41, 3.35; p < .001]. The probability of being a cannabis user was moderated by gender [odds ratio (OR) = 0.96; 95%CI= 0.93, 0.99; p = .026], such that for males, as PTSD symptom severity increased, likelihood of being a cannabis user increased. This relation was not supported in females, however. Conclusion/Implication: Discussion includes the potential role of the endocannabinoid system, social norms, and motives in gender differences in PTSD-related cannabis use, and explores the self-medication hypothesis in this context.

PTSD Symptoms, Emotion Dysregulation, and Alcohol-Related Consequences Among College Students With a Trauma History

OBJECTIVE

Posttraumatic stress disorder (PTSD), alcohol use, and alcohol-related consequences have been linked to emotion dysregulation. Sex differences exist in both emotion regulation dimensions and alcohol use patterns. This investigation examined facets of emotion dysregulation as potential mediators of the relationship between PTSD symptoms and alcohol-related consequences and whether differences may exist across sexes.

METHODS

Participants were 240 college students with a trauma history who reported using alcohol within the past three months and completed measures of PTSD symptoms, emotion dysregulation, alcohol consumption, alcohol-related consequences, and negative affect. The six facets of emotion dysregulation were examined as mediators of the relationship between PTSD symptoms and alcohol-related consequences in the full sample and by sex.

RESULTS

There were differences in sexes on several variables, with women reporting higher PTSD scores and lack of emotional awareness. Men reported significantly more drinks per week in a typical week and a heavy week. There were significant associations between the variables for the full sample, with PTSD showing associations with five facets of emotion dysregulation subscales: impulse control difficulties when upset, difficulties engaging in goal-directed behavior, nonacceptance of emotional responses, lack of emotional clarity, and limited access to emotion regulation strategies. Alcohol-related consequences were associated with four aspects of emotion dysregulation: impulse control difficulties when upset, difficulties engaging in goal-directed behavior, nonacceptance of emotional responses, and limited access to emotion regulation strategies. Two aspects of emotion regulation, impulse control difficulties and difficulties engaging in goal directed behavior, mediated the relationship between PTSD symptoms and alcohol-related consequences in the full sample, even after adjusting for the effects of negative affect. When examined separately by gender, impulse control difficulties remained a mediator for men and difficulties engaging in goal directed behavior for women.

CONCLUSIONS

These analyses shed light on processes that may underlie "self-medication" of PTSD symptoms. Gender-specific interventions targeting emotion dysregulation may be effective in reducing alcohol-related consequences in individuals with PTSD. Women may possibly benefit from interventions that focus on difficulties engaging in goal-directed behavior, while men may benefit from interventions that target impulse control difficulties when upset.

The impact of elevated posttraumatic stress on the efficacy of brief alcohol interventions for heavy drinking college students

Brief alcohol interventions (BAIs) have been widely adopted for use with college students and are associated with significant reductions in drinking and problems. However, many students do not respond to these approaches and little is known about risk factors for poor response. The current study investigated one possible risk factor by examining the impact of posttraumatic stress (PTS) symptoms on BAI efficacy. This study presents pooled data from two randomized clinical trials that examined the efficacy of counselor-administered BAIs compared with computerized interventions. Participants were 207 college students (53.1% women, 68.1% White/Caucasian, 16.9% with elevated post-traumatic stress) who reported past-month heavy episodic drinking. Follow-up assessments were completed six months post-intervention. Analyses testing differences in frequency of past-month heavy episodic drinking revealed a significant post-traumatic stress by time interaction (F(1,165)=8.27, p=.005) such that individuals screening positive for PTS showed larger reductions in heavy episodic drinking at follow-up. A significant three-way interaction between time, PTS, and intervention condition (F(2,167)=5.76, p=.004) was found for alcohol related consequences. Specifically, among individuals screening positive for PTS, only those that received the counselor-administered BAI showed a significant reduction in consequences at follow-up. These results suggest that overall college students with PTS may respond well to BAIs and that counselor-delivered BAIs may be more efficacious than computer-delivered interventions for reducing alcohol problems for these high-risk students.

Symptoms of depression and PTSD are associated with elevated alcohol demand

BACKGROUND

Behavioral economic demand curves measure individual differences in motivation for alcohol and have been associated with problematic patterns of alcohol use, but little is known about the variables that may contribute to elevated demand. Negative visceral states have been theorized to increase demand for alcohol and to contribute to excessive drinking patterns, but little empirical research has evaluated this possibility. The present study tested the hypothesis that symptoms of depression and PTSD would be uniquely associated with elevated alcohol demand even after taking into account differences in typical drinking levels.

METHOD

An Alcohol Purchase Task (APT) was used to generate a demand curve measure of alcohol reinforcement in a sample of 133 college students (50.4% male, 64.4% Caucasian, 29.5% African-American) who reported at least one heavy drinking episode (5/4 or more drinks in one occasion for a man/woman) in the past month. Participants also completed standard measures of alcohol consumption and symptoms of depression and PTSD.

RESULTS

Regression analyses indicated that symptoms of depression were associated with higher demand intensity (alcohol consumption when price=0; ΔR(2)=.05, p=.002) and lower elasticity (ΔR(2)=.04, p=.03), and that PTSD symptoms were associated with all five demand curve metrics (ΔR(2)=.04-.07, ps<.05).

CONCLUSIONS

These findings provide support for behavioral economic models of addiction that highlight the role of aversive visceral states in increasing the reward value of alcohol and provide an additional theoretical model to explain the association between negative affect and problematic drinking patterns.

Low family support perception: a 'social marker' of substance dependence?

OBJECTIVE

Simultaneously assess the relationship between the family support perception and the intensity of hopelessness, depression, and anxiety symptoms in alcohol or drug dependent (AOD) patients and in non-AOD dependent control group (CON).

METHOD

60 patients who met the DSM-IV criteria for AOD dependence and 65 individuals with similar profile, but not dependent on AOD completed the Family Support Perception Inventory (FSPI), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), and Beck Hopelessness Scale (BHS).

RESULTS

Logistic regression analysis indicated that high scores in family autonomy (OR = 0.08), and low scores in hopelessness (OR = 0.64) were negatively correlated with AOD dependence. Individuals with high scores in BAI had higher probability (OR = 1.22) of belonging to the AOD group, as well as those who reported previous psychiatric treatment (OR = 68.91). Only in the AOD group the total FSPI scores presented significant correlation with depression, anxiety, and hopelessness.

CONCLUSIONS

Individuals with AOD dependence and low scores of family support perception also presented high scores of depression, anxiety, and hopelessness, suggesting that FSPI scores could be a useful 'social marker' of AOD dependence with psychiatric comorbidities. These data also reinforce the relevance of evaluating family support in AOD treatment planning.

Intimate partner violence and patterns of alcohol abuse and dependence criteria among women: a latent class analysis

OBJECTIVE

Intimate partner violence (IPV) is a major public health issue, yet little is known about the association between IPV victimization and problem drinking among women. Study objectives were to (a) identify subtypes of problem drinking among women according to abuse and dependence criteria from the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV); (b) examine the association between recent IPV and the problem drinking classes; and (c) evaluate major depressive disorder (MDD) as a mediator of the IPV-alcohol relationship.

METHOD

Data come from a cohort of 11,782 female current drinkers participating in Wave 2 (2004-2005) of the National Epidemiologic Survey on Alcohol and Related Conditions. Latent class analysis was used to group participants into problem drinking classes according to 11 DSM-IV abuse and dependence criteria. The IPV measure was derived from six questions regarding abusive behaviors perpetrated by a romantic partner in the past year. Past-year MDD was assessed according to DSM-IV criteria. Latent class regression was used to test the association between drinking class and IPV.

RESULTS

Three classes of problem drinkers were identified: Severe (Class 1: 1.9%; n = 224), moderate (Class 2: 14.2%; n = 1,676), and nonsymptomatic (Class 3: 83.9%; n = 9,882). Past-year IPV was associated with severe and moderate classes (severe: adjusted odds ratio [aOR] = 5.70, 95% CI [3.70, 8.77]; moderate: aOR = 1.92, 95% CI [1.43, 2.57]). Past-year MDD was a possible mediator of the IPV-drinking class relationship.

CONCLUSIONS

Results indicate a strong association between recent IPV and problem drinking class membership. This study offers preliminary evidence that programs aimed at preventing problem drinking among women should take IPV and MDD into consideration.

Substance use coping as a mediator of the relationship between trauma symptoms and substance use consequences among incarcerated females with childhood sexual abuse histories

Rates of substance use and maltreatment are alarmingly high among incarcerated women. Although the direct link between trauma and substance use has been established, less is known about potential mediators. Thus, we examined substance use coping as a mediator between trauma symptoms and substance use consequences among a sample of incarcerated females (N = 111) who were survivors of childhood sexual abuse. Trauma symptoms predicted the severity of substance use consequences, with this relationship being mediated fully by avoidance coping (e.g., using substances to cope). Overall, trauma histories are important in predicting outcomes but must be examined in the context of current coping behaviors and substance use. Findings (data collected in 2007/2008) may help promote interventions that target patterns of coping and/or emotional avoidance among trauma survivors with substance use problems in incarcerated populations. The study's limitations are noted.

Psychological maltreatment in relation to substance use problem severity among youth

OBJECTIVES

Research has demonstrated that experiences of childhood maltreatment are prevalent in the life histories of youth with substance use problems; however, most of this research has focused on sexual or physical abuse. The purpose of the current study was to extend the scope of previous investigations to include psychological maltreatment experiences, examining the extent to which emotional abuse and emotional neglect predict substance use problem severity among youth. The current study also sought to examine whether a cumulative model fit the data, in which the experience of multiple forms of maltreatment would be related most strongly to severity of substance use problems, or whether there was a distinct effect of psychological maltreatment.

METHODS

Data were collected through self-report questionnaires from 216 youth (144 males, 72 females) entering an outpatient treatment program for youth with substance use concerns.

RESULTS

Results indicated that, when considering all forms of abuse together, only emotional abuse and emotional neglect emerged as significant predictors of substance use problem severity. Furthermore, the association between psychological maltreatment and substance use problem severity was unaltered by the consideration of concurrent experiences of interpersonal violence.

CONCLUSIONS

The results of the current study are consistent with those of a body of research describing the detrimental effects of psychological maltreatment. The findings have potential implications for the development and provision of trauma-informed youth substance use treatment services. The findings suggest that attending to the sequelae of psychological maltreatment may be important in assisting these youth in achieving successful treatment outcomes.

Instruments to detect alcohol and other drug misuse in the emergency department: a systematic review

CONTEXT

Alcohol and other drug (AOD) misuse by youth is a significant public health concern. Unanticipated treatment for AOD-related morbidities is often sought in hospital emergency departments (EDs). Screening instruments that rapidly identify patients who require further diagnostic evaluation and/or brief intervention are critically important.

OBJECTIVE

To summarize evidence on screening instruments that can assist emergency care clinicians in identifying AOD misuse in pediatric patients.

METHODS

Fourteen electronic databases (including Medline, Embase, and PsycINFO) and reference screening were used. Psychometric and prospective diagnostic studies were selected if the instrument focused on detecting AOD misuse in patients aged 21 years or younger in the ED. Two reviewers independently assessed quality and extracted data. Validity and reliability data were collected for psychometric studies. Instrument performance was assessed by using sensitivity, specificity, and positive (LR(+)) and negative (LR(-)) likelihood ratios. Meta-analysis was not possible because of clinical and measurement heterogeneity.

RESULTS

Of the 1545 references initially identified, 6 studies met inclusion criteria; these studies evaluated 11 instruments for universal or targeted screening of alcohol misuse. Instruments based on diagnostic criteria for AOD disorders were effective in detecting alcohol abuse and dependence (sensitivity: 0.88; specificity: 0.90; LR(+): 8.80) and cannabis use disorder (sensitivity: 0.96; specificity: 0.86; LR(+): 6.83).

CONCLUSIONS

On the basis of the current evidence, we recommend that emergency care clinicians use a 2-question instrument for detecting youth alcohol misuse and a 1-question instrument for detecting cannabis misuse. Additional research is required to definitively answer whether these tools should be used as targeted or universal screening approaches in the ED.

Child sexual abuse, dissociation, and alcohol: implications of chemical dissociation via blackouts among college women

The present study examined whether childhood sexual trauma moderated the relationships between dissociation and both problematic college drinking and alcohol-induced blackouts among a sample of college females (N = 156). Cross-sectional data were consistent with the moderation hypotheses. Simple effects showed that the relationship between dissociation and blackout frequency as well as problematic drinking only existed among those with sexual trauma histories (p < .035), but not among those reporting no sexual trauma exposure (p = .333). Findings implicate the use of alcohol as a possible maladaptive coping mechanism among college females with childhood sexual trauma.