The negative impact of prison work on sleep health.

OBJECTIVES: To examine the prevalence of sleep disorders, deprivation, and quality in a sample of prison employees, and investigate the relationship between exposure to work-related critical incidents and sleep. METHODS: We surveyed 355 Washington State Department of Corrections employees. The survey included the Pittsburg Sleep Quality Index and the Critical Incident History Questionnaire. RESULTS: We found 28% and 45% of the sample reported suffering from Apnea and insomnia, respectively. Over half of the sample reporting sleeping less than 2 h between shifts and being constantly fatigued. We found significant associations between exposure to critical incidents and sleep problems. CONCLUSIONS: Prison workers are in desperate need of help to improve their sleep. Our findings suggest the importance of continued investigation of prison worker sleep health using objective measures, toward the development of programs for improving sleep and resilience to critical incidents and stress.

Patterns and predictors of alcohol use in male and female urban police officers.

In a large sample of urban police officers, 18.1% of males and 15.9% of females reported experiencing adverse consequences from alcohol use and 7.8% of the sample met criteria for lifetime alcohol abuse or dependence. Female officers had patterns of alcohol use similar to male officers and substantially more than females in the general population. Critical incident exposure and posttraumatic stress disorder (PTSD) symptoms were not associated with level of alcohol use. Greater psychiatric symptoms were related to adverse consequences from alcohol use. There was a noteworthy gender by work stress interaction: greater routine work stress related to lower current alcohol use in female officers.

Frequency and severity approaches to indexing exposure to trauma: the Critical Incident History Questionnaire for police officers.

The Critical Incident History Questionnaire indexes cumulative exposure to traumatic incidents in police by examining incident frequency and rated severity. In over 700 officers, event severity was negatively correlated (r(s) = -.61) with frequency of exposure. Cumulative exposure indices that varied emphasis on frequency and severity-using both nomothetic and idiographic methods-all showed satisfactory psychometric properties and similar correlates. All indices were only modestly related to posttraumatic stress disorder (PTSD) symptoms. Ratings of incident severity were not influenced by whether officers had ever experienced the incident. Because no index summarizing cumulative exposure to trauma had superior validity, our findings suggest that precision is not increased if frequency is weighted by severity.

Deployment Anxiety Reduction Training: A Pilot Study of Acceptability and Feasibility in Current or Recent Active Duty Service Members.

Objectives: The Deployment Anxiety Reduction Training (DART) is a manualized tool that was developed and piloted with active duty service members and recently deployed veterans regarding their response to potential and experienced acute combat stress reactions. DART is low risk and has high potential to be beneficial. It is a brief, one-session, non-pharmacological approach designed to reduce symptoms of peritraumatic panic and increase resilience in the face of a potentially traumatic stressor. Methods: This study was a mixed-methods pilot study to assess the utility and acceptability of DART during deployment. Results: Self-report and interview responses indicated that participants generally found the DART techniques acceptable and easy to understand. Overall, the techniques were perceived as likely to be helpful with high utility, although there was variation in perceived helpfulness among the different techniques. Participants overwhelmingly positively endorsed delivery of the DART protocol through use of smartphone technology. Conclusions: Results indicate that the DART components were considered highly acceptable and feasible for use in the deployed environment.

Associations between childhood trauma and emotion-modulated psychophysiological responses to startling sounds: a study of police cadets.

Childhood trauma may confer risk for adult psychopathology by altering emotional and physiological responses to subsequent stressors. Few studies have distinguished effects of childhood trauma from effects of current Axis I psychopathology on adult psychophysiological reactivity. The authors exposed 90 psychiatrically healthy police cadets to startling sounds under increasing threat of shock while assessing their eyeblink electromyogram (EMG), skin conductance (SC), and heart rate responses. When compared with those who did not endorse early trauma (n = 65), cadets reporting childhood trauma (n = 25) reported less positive emotion and showed greater SC responses across all threat levels. They also showed threat-dependent elevations in reported negative emotions and EMG responses. Results suggest that childhood trauma may lead to long-lasting alterations in emotional and psychophysiological reactivity even in the absence of current Axis I psychopathology.

Peritraumatic fear, helplessness and horror and peritraumatic dissociation: do physical and cognitive symptoms of panic mediate the relationship between the two?

The goal of this study was to examine whether panic mediates the relationship between fear, helplessness, and horror (PTSD criterion A2) and dissociation at the time of trauma. The study sample included 709 police officers and 317 peer-nominated civilians who had been exposed to a variety of critical incidents. Participants filled out measures of critical incident exposure, PTSD criterion A2, panic, and dissociation. Results indicate that together, physical and cognitive symptoms of panic completely mediate the relationship between criterion A2 and dissociation in civilians, and partially mediate that relationship in police. These results provide support for the idea that panic mediates the relationship between fear, helplessness, and horror (criterion A2) and dissociation at the time of trauma. The results also raise the possibility, however, that the mediational role of panic may be further moderated by additional variables.

Predictors of posttraumatic stress in police and other first responders.

We provide an overview of previous research conducted by our group on risk and resilience factors for PTSD symptoms in police and other first responders. Based on our work, the findings of other investigators on individual differences in risk for PTSD, and drawing on preclinical studies fear conditioning and extinction, we propose a conceptual model for the development of PTSD symptoms emphasizing the role of vulnerability and resilience to peritraumatic panic reactions. We tested this conceptual model in a cross-sectional sample of police officers (n = 715). Utilizing an hierarchical linear regression model we were able to explain 39.7% of the variance in PTSD symptoms. Five variables remained significant in the final model; greater peritraumatic distress (beta = 0.240, P < .001), greater peritraumatic dissociation (beta = 0.174, P < .001), greater problem-solving coping (beta = 0.103, P < .01), greater routine work environment stress (beta = 0.182, P < .001), and lower levels of social support (beta = -0.246, P < .001). These results were largely consistent with the proposed conceptual model. Next steps in this line of research will be to test this model prospectively in a sample of 400 police academy recruits assessed during training and currently being followed for the first 2 years of police service.

Association between alexithymia and neuroendocrine response to psychological stress in police academy recruits.

Alexithymia has been associated with both posttraumatic stress disorder and neuroendocrine responses to stress. This study examined the relationship of alexithymia to salivary cortisol and 3-methoxy-4-hydroxy-phenylglycol (MHPG) in a sample of police academy recruits exposed to a video stress challenge. Alexithymia scores were negatively associated with catecholamine response to the video challenge but no association was found between alexithymia scores and cortisol reactivity.

Association between childhood trauma and catecholamine response to psychological stress in police academy recruits.

BACKGROUND: Childhood trauma is a risk factor for anxiety disorders in adulthood. One possible mechanism for this association is an increased neuroendocrine response to stress in adults with a history of childhood trauma. METHODS: In a cross-sectional study, 76 police academy recruits (mean [+/-SD] age 28 +/- 5 years, 10 female) were exposed to a video depicting real-life officers exposed to highly stressful incidents. Salivary cortisol and 3-methoxy-4-hydroxy-phenylglycol (MHPG, the major metabolite of norepinephrine) were collected at baseline, immediately after the video, and 20 min after the video. Childhood trauma before age 14 was assessed with an interview (Life Stressor Checklist-Revised). RESULTS: Exposure to the video elicited significant MHPG and cortisol responses in both groups. Recruits with childhood trauma histories (n = 16) had a significantly greater MHPG response, as evidenced by a group effect (F = 8.0, p < .01), and a group x time interaction (F = 4.1, p < .05). The cortisol response did not differ between groups. CONCLUSIONS: Police academy recruits with childhood trauma histories have an increased catecholamine response to psychological stress. This might serve as a risk factor for anxiety disorders in recruits, and these findings might generalize to other groups with a history of childhood trauma.

PTSD symptoms predict waking salivary cortisol levels in police officers.

This study examines whether pre- or post-dexamethasone salivary cortisol is related to cumulative critical incident exposure, peritraumatic responses, or post-traumatic stress disorder (PTSD) symptom severity. Thirty active duty police officers completed the study protocol, which included measures of peritraumatic emotional distress, peritraumatic dissociation, duty-related trauma exposure, and PTSD symptoms. Salivary cortisol was consolidated into three outcome variables: (1) pre-dexamethasone free cortisol levels at 1, 30, 45, and 60 min after awakening, (2) post-dexamethasone cortisol levels at the identical wake times, and (3) percentage of cortisol suppression. Control variables included age, gender, average daily alcohol use, night shift work, routine work environment stressors, and salivary dexamethasone levels. Zero order correlations showed that greater levels of PTSD symptoms, peritraumatic distress, and peritraumatic dissociation were associated with lower levels of pre-dexamethasone cortisol levels on awakening, but were not associated with the other two cortisol variables. A trend was also noted for older subjects to have lower pre-dexamethasone cortisol on awakening. When these four predictors were entered simultaneously in a regression analysis, only age and PTSD symptom severity significantly predicted pre-dexamethasone awakening cortisol levels. These results replicate previous research indicating a relationship between greater PTSD symptoms and lower levels of basal cortisol on awakening, and extend this finding to a previously unstudied non-treatment seeking population, urban police.

Why are hispanics at greater risk for PTSD?

Several studies have found that Hispanic Americans have higher rates of posttraumatic stress disorder (PTSD) than non-Hispanic Caucasian and Black Americans. The authors identified predictors of PTSD symptom severity that distinguished Hispanic police officers (n=189) from their non-Hispanic Caucasian (n=317) and Black (n=162) counterparts and modeled them to explain the elevated Hispanic risk for PTSD. The authors found that greater peritraumatic dissociation, greater wishful thinking and self-blame coping, lower social support, and greater perceived racism were important variables in explaining the elevated PTSD symptoms among Hispanics. Results are discussed in the context of Hispanic culture and may be important for prevention of mental illness in the fastest growing ethnic group in the United States.

Predictors of posttraumatic stress disorder and symptoms in adults: a meta-analysis.

A review of 2,647 studies of posttraumatic stress disorder (PTSD) yielded 476 potential candidates for a meta-analysis of predictors of PTSD or of its symptoms. From these, 68 studies met criteria for inclusion in a meta-analysis of 7 predictors: (a) prior trauma, (b) prior psychological adjustment, (c) family history of psychopathology, (d) perceived life threat during the trauma, (e) posttrauma social support, (f) peritraumatic emotional responses, and (g) peritraumatic dissociation. All yielded significant effect sizes, with family history, prior trauma, and prior adjustment the smallest (weighted r = .17) and peritraumatic dissociation the largest (weighted r = .35). The results suggest that peritraumatic psychological processes, not prior characteristics, are the strongest predictors of PTSD.

The mediating effects of sleep in the relationship between traumatic stress and health symptoms in urban police officers.

OBJECTIVE: Posttraumatic stress symptoms have been associated with increased health problems across numerous studies. Sleep disruption, one of the principal symptoms resulting from traumatic stress, has also been shown to produce health problems. This study explored the hypothesis that the relationship between posttraumatic stress symptoms and health is mediated by sleep problems. METHOD: A sample of 741 police officers were administered measures of traumatic stress symptoms, sleep, health functioning, and somatic symptoms. RESULTS: Traumatic stress symptoms were significantly related to both somatic symptoms (R2 = 0.18, p <.001) and health functioning (R2 = 0.02, p <.01). The relationship between somatic symptoms and traumatic stress symptoms was partially mediated by sleep (p <.001). The relationship between traumatic stress symptoms and health functioning was fully mediated by sleep. CONCLUSIONS: Although design characteristics, such as cross-sectional sampling, limit the inferences that can be drawn, these findings suggest that sleep may serve as an important mediator between traumatic stress and somatic symptoms.

Prospective study of police officer spouse/partners: a new pathway to secondary trauma and relationship violence?

INTRODUCTION: It has been reported that posttraumatic stress disorder (PTSD) is associated with secondary spouse/partner (S/P) emotional distress and relationship violence. OBJECTIVE: To investigate the relationships between PTSD, S/P emotional distress and relationship violence among police recruits using a prospective design. METHODS: Two hypotheses were tested in 71 S/Ps: (1) Police officer reports of greater PTSD symptoms after 12 months of police service will be associated with greater secondary trauma symptoms among S/Ps; (2) Greater secondary trauma symptoms among S/Ps at 12 months will be associated with S/P reports of greater relationship violence. METHODS: 71 police recruits and their S/Ps were assessed at baseline and 12 months after the start of police officer duty. Using linear and logistic regression, we analyzed explanatory variables for 12 month S/P secondary traumatic stress symptoms and couple violence, including baseline S/P variables and couple violence, as well as exposure and PTSD reports from both S/P and officer. RESULTS: S/P perception of officer PTSD symptoms predicted S/P secondary traumatic stress. OS/P secondary trauma was significantly associated with both total couple violence (.34, p = .004) and S/P to officer violence (.35, p = .003). CONCLUSIONS: Although results from this relatively small study of young police officers and their S/Ps must be confirmed by larger studies in general populations, findings suggest that S/P perception of PTSD symptoms may play a key role in the spread of traumatic stress symptoms across intimate partner relationships and intimate partner violence in the context of PTSD.

Gender and PTSD: What can we learn from female police officers?

Studies of civilians typically find that female gender is a risk factor for posttraumatic stress disorder (PTSD). Police and military studies often find no gender differences in PTSD. We compared 157 female police officers and 124 female civilians on several variables including trauma exposure, peritraumatic emotional distress, current somatization, and cumulative PTSD symptoms. We found that despite greater exposure to assaultive violence in the officer group, female civilians reported significantly more severe PTSD symptoms. Elevated PTSD symptoms in female civilians were explained by significantly more intense peritraumatic emotional distress among female civilians. We also found that female officers showed a stronger direct relationship between peritraumatic emotional distress and current somatization. Our findings suggest that apparent gender differences in PTSD may result from differences in peritraumatic emotionality, which influence subsequent PTSD and somatization symptoms. Emotionality may be more important than biological sex in understanding gender differences in PTSD.

A randomized controlled clinical treatment trial for World Trade Center attack-related PTSD in disaster workers.

This article describes a controlled clinical trial of cognitive-behavioral treatment (CBT) for disaster workers. Despite high rates of PTSD in disaster workers worldwide, there have been no randomized trials of PTSD treatment. Participants were randomly assigned to a 12-week cognitive-behavioral exposure treatment (CBT, N = 15) or a treatment-as-usual (N = 16) condition. Eight CBT and 14 treatment-as-usual participants completed treatment. An ANOVA examining changes in Clinician-Administered PTSD Scale scores found significant main effects of Time, Group, and a Time x Group interaction (p's < 0.010) with a significantly greater decline in symptom scores in the CBT group. Between-group effect sizes were large. Dropout was associated with lower income, less education, and higher alcohol consumption. This project demonstrates the feasibility of recruitment in the aftermath of a catastrophic event, the relevance of a brief focused intervention comprised of CBT and exposure, and the need to eliminate barriers to treatment retention associated with income and education.

The relationship between peritraumatic distress and peritraumatic dissociation: an examination of two competing models.

This study examined whether peritraumatic dissociation serves to protect trauma-exposed individuals from experiencing high levels of peritraumatic distress or is an epiphenomenon of high levels of peritraumatic distress. The sample was comprised of 709 police officers and 317 peer-nominated civilians exposed to a variety of critical incidents. Participants filled out measures of trauma exposure, traumatic stress, peritraumatic distress, and peritraumatic dissociation. There was an overall moderate-to-strong linear relationship between peritraumatic distress and dissociation. Among those with high levels of dissociation, very few reported low levels of distress. Among those with high levels of distress, a significant number--but not all--reported high levels of dissociation. Our results do not provide support for the idea that dissociation protects individuals from experiencing high levels of distress at the time of the trauma but rather suggest that dissociation is an epiphenomenon of high levels of distress observed in a subset of individuals.

Alexithymia and PTSD symptoms in urban police officers: cross-sectional and prospective findings.

The relationship of alexithymia to posttraumatic stress disorder (PTSD) symptomatology was examined cross-sectionally in 166 urban police officers surveyed between 1998 and 1999 and prospectively in 54 of these officers who participated in a follow-up survey after the September 11, 2001 (9/11) terrorist attacks. In cross-sectional analyses, alexithymia scores were positively associated with PTSD symptom levels and self-reported childhood emotional abuse--neglect, but not with cumulative level of critical incident exposure. Alexithymia scores accounted for 11.2% of the variance in PTSD symptoms prior to accounting for additional predictors, but did not retain significance in the final model. In prospective analyses, alexithymia scores significantly predicted 9/11-related PTSD symptom severity over and above pre-9/11 PTSD symptoms.

The impact of personal threat on police officers' responses to critical incident stressors.

The relationship of type of critical incident (CI) stressor with peritraumatic responses and posttraumatic stress disorder symptoms was examined in police. Officers (N = 662) provided narratives of their most distressing CI experienced during police service and completed measures of related peritraumatic responses and posttraumatic stress disorder symptoms. Narratives were reliably rated (kappa = .80-1.0) on seven categories emerging from a series of factor analyses of a measure of critical incident stressors. Additional analysis revealed that the classification of primary narrative features required only five categories (personal life threat, duty-related violence, encountering physical or sexual assault victims, exposure to civilian death, other). When analyzed by further collapsing these five categories into high versus low personal threat, officers whose narratives contained high personal threat reported more peritraumatic dissociation, peritraumatic emotional distress, and current hyperarousal symptoms. Results suggest that greater personal threat during a CI may place an officer at greater risk for subsequent distress.