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BACKGROUND: Social support may be a protective factor for the mental health of public safety personnel (PSP), who are frequently exposed to potentially psychologically traumatic events and report substantial post-traumatic stress disorder (PTSD) and major depressive disorder (MDD) symptoms. Research examining perceived social support and its association with PTSD and MDD in different PSP categories (e.g. firefighters, paramedics) is limited. AIMS: To examine differences in perceived social support across PSP and determine whether perceived social support is associated with differences in rates of MDD and PTSD. METHODS: We asked Canadian PSP, including correctional workers and officers, public safety communications officials, firefighters, paramedics, municipal and provincial police officers, and Royal Canadian Mounted Police (RCMP) officers, to complete an online anonymous survey that assessed socio-demographic information (e.g. occupation, sex, marital status, service years), social supports and symptoms of mental disorders, including PTSD and MDD. Analyses included ANOVA and logistic regression models. RESULTS: Perceived social support differed by PSP occupation. RCMP officers reported lower social support than all other PSP except paramedics. For most PSP categories, PSP who reported greater social support were less likely to screen positive for PTSD (adjusted odds ratios [AORs]: 0.90-0.93). Across all PSP categories, greater perceived social support was associated with a decreased likelihood of screening positive for MDD (AORs: 0.85-0.91). CONCLUSIONS: Perceived social support differs across some PSP categories and predicts PTSD and MDD diagnostic status. Studies involving diagnostic clinical interviews, longitudinal designs and social support interventions are needed to replicate and extend our results.

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Canadian Public Safety Personnel (PSP; e.g., correctional service officers, dispatchers, firefighters, paramedics, police officers) regularly experience potentially traumatic, painful, and injurious events. Such exposures increase risk for developing mental disorders and chronic pain, which both involve substantial personal and social costs. The interrelationship between mental disorders and chronic pain is well-established, and both can be mutually maintaining; accordingly, understanding the relationship between mental health and chronic pain among PSP is important for improving health care. Unfortunately, the available research on such comorbidity for PSP is sparse. The current study was designed to provide initial estimates of comorbidities between mental disorders and chronic pain across diverse PSP. Participants included 5093 PSP (32% women) in six categories (i.e., Call Center Operators/Dispatchers, Correctional Workers, Firefighters, Municipal/Provincial Police, Paramedics, Royal Canadian Mounted Police) who participated in a large PSP mental health survey. The survey included established self-report measures for mental disorders and chronic pain. In the total sample, 23.1% of respondents self-reported clinically significant comorbid concerns with both mental disorders and chronic pain. The results indicated PSP who reported chronic pain were significantly more likely to screen positive for posttraumatic stress disorder (PTSD), major depressive disorder, generalized anxiety disorder, social anxiety disorder, and alcohol use disorder. There were differences between PSP categories; but, the most consistent indications of comorbidity were for chronic pain, PTSD, and major depressive disorder. Comorbidity between chronic pain and mental disorders among PSP is prevalent. Health care providers should regularly assess PSP for both symptom domains.

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Background: Chronic pain is highly prevalent in the general population and may be even higher among public safety personnel (PSP; e.g., correctional officers, dispatchers, firefighters, paramedics, police). Comprehensive data on chronic pain among diverse Canadian PSP are relatively sparse. Aims: The current study was designed to provide initial estimates of chronic pain frequency and severity among Canadian PSP. Methods: Estimates of chronic pain frequency and severity (i.e., intensity and duration) at different bodily locations were derived from self-reported data collected through an online survey. Participants included 5093 PSP (32.5% women) grouped into six categories (i.e., call center operators/dispatchers, correctional officers, firefighters, municipal/provincial police, paramedics, Royal Canadian Mounted Police [RCMP]). Results: Substantial proportions of participants reported chronic pain, with estimates ranging from 35.3% to 45.4% across the diverse PSP categories. Across PSP categories, chronic lower back pain was the most prevalent. For some pain locations, firefighters and municipal/provincial police reported lower prevalence, but paramedics reported lower intensity, and duration, than some other PSP groups. Over 50% of RCMP and paramedics reporting chronic pain indicated that the pain was associated with an injury related to active duty. Conclusions: Discrepancies emerged across PSP members with respect to prevalence, location, and severity. The current data suggest that additional resources and research are necessary to mitigate the development and maintenance of distressing or disabling chronic pain for Canadian PSP.

Contexte : La prévalence de la douleur chronique est élevée parmi la population en général et pourrait être encore plus élevée chez le personnel de la sécurité publique (ex.: agents correctionnels, répartiteurs, pompiers, ambulanciers, policiers). Il y a relativement peu de données exhaustives sur la douleur chronique chez le personnel de sécurité publique canadien.But : Cette étude visait à estimer la fréquence et la gravité de la douleur chronique chez le personnel de sécurité publique canadien.Méthodes : Des estimations de la fréquence et de la gravité de la douleur chronique (i.e. intensité et durée) à différents endroits du corps ont été tirées de données autodéclarées receuillies par le truchement d'un questionnaire en ligne. Les 5 093 participants (32,5 % de femmes) ont été regroupés en six catégories (i.e. opérateurs et répartiteurs en centre d'appel, agents correctionnels, pompiers, policiers au niveau municipal ou provincial, ambulanciers, Gendarmerie royale du Canada.)Résultats : Une proportion importante de participants a déclaré souffrir de douleur chronique, avec des estimations allant de 35,3 % à 45,4 % pour toutes les catégories de personnel de sécurité. La douleur au bas du dos présentait la prévalence la plus élevée dans toutes les catégories de personnel de sécurité. Les ambulanciers ont déclaré une plus faible prévalence de l'intensité et de la durée de la douleur à ressentie à certains endroits, comparativement aux autres groupes de personnel de la santé publique. Plus de 50 % des agents de la Gendarmerie royale du Canada et des ambulanciers qui ont déclaré souffrir de douleur chronique ont affirmé que la douleur était associée à une blessure subie pendant qu'ils étaient en service.Conclusions : Des différences ont été relevées entre les membres du personnel de la sécurité publique en ce qui concerne la prévalence, la localisation et la gravité de la douleur. Les données actuelles suggèrent que des ressources et des études additionnelles sont nécessaires pour atténuer l'apparition et la persistance de la douleur chronique éprouvante ou invalidante chez le personnel de la sécurité publique canadien.

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This dissemination study examined the effectiveness of therapist-assisted Internet-delivered Cognitive Behavior Therapy (ICBT) when offered in clinical practice. A centralized unit screened and coordinated ICBT delivered by newly trained therapists working in six geographically dispersed clinical settings. Using an open trial design, 221 patients were offered 12 modules of ICBT for symptoms of generalized anxiety (n=112), depression (n=83), or panic (n=26). At baseline, midpoint and post-treatment, patients completed self-report measures. On average, patients completed 8 of 12 modules. Latent growth curve modeling identified significant reductions in depression, anxiety, stress and impairment (d=.65-.78), and improvements in quality of life (d=.48-.66). Improvements in primary symptoms were large (d=.91-1.25). Overall, therapist-assisted ICBT was effective when coordinated across settings in clinical practice, but further attention should be given to strategies to improve completion of treatment modules.

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Health anxiety disorders (e.g., hypochondriasis) are prevalent but understudied in older adults. Existing research suggests that severe health anxiety has a late age of onset, perhaps because of comorbidity with physical health conditions that are more likely to occur with aging. Despite being under diagnosed in later life due to a lack of age-appropriate diagnostic criteria, significant positive associations with age suggest that health anxiety disorders are more prevalent in older than younger adults. Preliminary research also highlights the complexity of these disorders in older adults and the potential importance of medical morbidity as a risk factor. This review explores the complexities of health anxiety disorders in later life with a focus on understanding defining features, prevalence rates, correlates, assessment, diagnosis, and treatment. We offer a theoretical model of the development of severe health anxiety among older adults to encourage further research on this important and under-studied topic.

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BACKGROUND: Although it has been posited that exposure to adverse childhood experiences (ACEs) increases vulnerability to deployment stress, previous literature in this area has demonstrated conflicting results. Using a cross-sectional population-based sample of active military personnel, the present study examined the relationship between ACEs, deployment related stressors and mood and anxiety disorders. METHOD: Data were analyzed from the 2002 Canadian Community Health Survey-Canadian Forces Supplement (CCHS-CFS; n = 8340, age 18-54 years, response rate 81%). The following ACEs were self-reported retrospectively: childhood physical abuse, childhood sexual abuse, economic deprivation, exposure to domestic violence, parental divorce/separation, parental substance abuse problems, hospitalization as a child, and apprehension by a child protection service. DSM-IV mood and anxiety disorders [major depressive disorder, post-traumatic stress disorder (PTSD), generalized anxiety disorder (GAD), panic attacks/disorder and social phobia] were assessed using the composite international diagnostic interview (CIDI). RESULTS: Even after adjusting for the effects of deployment-related traumatic exposures (DRTEs), exposure to ACEs was significantly associated with past-year mood or anxiety disorder among men [adjusted odds ratio (aOR) 1.34, 99% confidence interval (CI) 1.03-1.73, p < 0.01] and women [aOR 1.37, 99% CI 1.00-1.89, p = 0.01]. Participants exposed to both ACEs and DRTEs had the highest prevalence of past-year mood or anxiety disorder in comparison to those who were exposed to either ACEs alone, DRTEs alone, or no exposure. CONCLUSIONS: ACEs are associated with several mood and anxiety disorders among active military personnel. Intervention strategies to prevent mental health problems should consider the utility of targeting soldiers with exposure to ACEs.

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BACKGROUND: Differences in attentional processes have been linked to the development and maintenance of psychopathology. Shifts in such processes have been described by the constructs Dissociation and Absorption. Dissociation occurs when external and/or internal stimuli are excluded from consciousness due to discrepant, rather than unitary, manifestations of cognitive awareness [Erdelyi MH. 1994: Int J Clin Exp Hypnosis 42:379-390]. In contrast, absorption can be conceptualized by a focus on limited stimuli, to the exclusion of other stimuli, because of unifying, rather than discrepant, manifestations of cognitive awareness. The Dissociative Experiences Scale [DES; Bernstein EM, Putnam FW. 1986: J Nerv Ment Dis 174:727-735] and Tellegen Absorption Scale [TAS; Tellegen A, Atkinson G. 1974: J Abnorm Psychol 83:268-277] are common measures of each construct; however, no factor analyses are available for the TAS and despite accepted overlap, no one has assessed the DES and TAS items simultaneously. Previous research suggests the constructs and factor structures need clarification, possibly including more parsimonious item inclusion [Lyons LC, Crawford HJ. 1997: Person Individ Diff 23:1071-1084]. The purpose of this study was to evaluate the factor structure of the DES and TAS and create a psychometrically stable measure of Dissociation and Absorption. METHODS: This study included data from an undergraduate (n=841; 76% women) and a community sample (n=233; 86% women) who each completed the DES and TAS. RESULTS: Exploratory factor analyses [Osborne JW (ed). 2008: Best Practices in Quantitative Methods. Los Angeles: Sage Publications Inc.] with all DES and TAS items suggested a 15-item 3-factor solution (i.e., imaginative involvement, dissociative amnesia, attentional dissociation). Confirmatory factor analyses resulted in excellent fit indices for the same solution. CONCLUSIONS: The items and factors were conceptualized in line with precedent research as the Attentional Resource Allocation Scale (ARAS). Comprehensive results, implications, and future research directions are discussed.

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Heterogeneity has been identified within chronic musculoskeletal pain (CMP) patient samples; however, investigations have typically focused on psychological constructs or coping (e.g., pain-related anxiety, catastrophizing) in this regard. Furthermore, studies to date have included either samples presenting with a specific anatomical site (e.g., only lower back pain) or a mix of anatomical sites (e.g., lower back, shoulder, or leg pain) as the primary pain complaint, without making comparisons based on the anatomical site of reported pain. For example, patients with chronic lower back pain (CLBP) may differ from those with chronic upper or lower extremity pain (ULEP) in presentation, recovery trajectory, and psychological variables. The current investigation explored whether systematic differences existed between patients participating in a multidisciplinary reconditioning third-party-payer program who have CLBP relative to patients with ULEP. Patients included those with CLBP (n=23; 35% women) or ULEP (e.g., arm, shoulder, leg, knee; n=28; 29% women). The ULEP group began and finished the program with more pain-related anxiety, more catastrophic thoughts, and more fearful cognitions than the CLBP group. There were no significant correlations between functional deficit and perceived levels of disability or associations between group and return to work status; however, there was an unexpected significant interaction between group and perceived disability. Specifically, CLBP patients reported increasing perceived disability despite improvements in functional deficit, whereas ULEP patients did not. These findings suggest a disconnect between perceived disability and function that may be specific to lower back pain. Implications and directions for future research are discussed.

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INTRODUCTION: Fear-anxiety-avoidance models of chronic pain emphasize psychological constructs as key vulnerabilities for the development and maintenance of disabling chronic pain. Complementarily, Waddell described physical signs and symptoms thought inconsistent with anatomic and pathologic disease patterns that might function as indications of pain-related psychological distress. Research has not supported using Waddell's signs due to low inter-rater reliability and limited associations with psychological distress; however, these findings are equivocal. Similarly, theorists have suggested that endorsement of Waddell's symptoms may indicate psychological distress; however, the precedent research has not included the psychological constructs described in fear-anxiety-avoidance models as vulnerability factors for the development and maintenance of chronic pain. METHODS: Participants for the current study were patients (n = 68; 35% women) with chronic low back pain involved in a multi-disciplinary work-hardening program provided by a third-party insurer. Patients endorsing more than two of Waddell's symptoms were compared with those who did not on demographic variables as well as established self-report psychological measures, measures of perceived disability, functional capacity, and treatment outcome. RESULTS: Patients endorsing more than two of Waddell's symptoms reported higher levels of depressive symptoms, pain-related anxiety, fear, catastrophizing, and pain intensity. Unexpectedly, there were no significant differences in functional capacity. Similar differences were found between those who did and did not return to work. CONCLUSIONS: While Waddell's symptoms must still be interpreted judiciously, they may provide much needed cross-disciplinary utility as indicators that more detailed psychological assessment is warranted. Comprehensive implications and directions for future research are discussed.

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INTRODUCTION: Waddell's signs and symptoms have been described as patient presentations not within usual anatomic patterns of injury pathology. Waddell's signs were thought to indicate psychological distress and were termed "non-organic findings"; similarly, Waddell's symptoms were described as inappropriate and attributable to psychological features. Endorsement of more than two of Waddell's symptoms is thought to be associated with psychological distress, disability, and poor treatment outcomes; however, this has not been empirically assessed. METHODS: The current study used a sample of patients (n = 108; 30% women) involved in a multi-disciplinary work hardening program provided by a third-party insurer. Patients who endorsed more than two of Waddell's symptoms were compared with those who did not on demographic variables as well as self-report measures of psychological distress, disability, and treatment outcome. RESULTS: Patients who endorsed more than two of Waddell's symptoms reported higher levels of psychological distress, perceived disability, pain intensity, and pain durations. Moreover, consistent with previous research on Waddell's symptoms, patients endorsing more than two symptoms were also less likely to return to work. CONCLUSIONS: Waddell's symptoms were associated with increased perceived disability and pervasive pain interference. Patients who endorsed more than two symptoms were significantly less likely to return to work than those who endorsed zero, one, or two symptoms. Patients who endorsed more than two symptoms may indeed be affected by factors beyond tissue pathology that nonetheless warrant clinical attention. Waddell's symptoms appear to have promise as a quick indicator of treatment complexity and outcome.

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Coping is a cyclical process in which an individual evaluates stressful events, chooses and implements coping strategies, re-evaluates the outcome of the coping effort and modifies the strategy if necessary. The intent of the present study was to evaluate the extent to which pain-related adjustment (i.e. pain severity, pain interference, negative affect) and perceptions of control are associated with the implementation of particular coping strategies. Participants were 136 patients assessed at an interdisciplinary pain clinic for cervical sprain injuries. As part of a routine assessment, participants completed a questionnaire package regarding background, pain severity, pain interference, negative affect, perceived control and use of particular coping strategies. Results of hierarchical multiple regression analyses revealed that pain interference, after controlling for all other variables, was associated with greater use of less physically demanding strategies (i.e. resting, guarding, asking for assistance, seeking social support and coping self-statements). Negative affect, on the other hand, after controlling for other variables, was associated with reduced use of task persistence. Finally, perceived control, independent of other variables, was associated with greater use of cognitive and social coping strategies (i.e. asking for assistance, seeking social support and coping self-statements). The results of the study shed light on the complex relationship between use of particular coping strategies and situational variables of pain-related adjustment and perceived control. Implications for clinicians who assist patients via implementation or modification of particular coping techniques are discussed.

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Although widely used, there have been few investigations of the factorial validity of the short-form McGill Pain Questionnaire (SF-MPQ; Melzack, 1987). Confirmatory factor analysis was performed on item responses to the SF-MPQ obtained from 188 patients with chronic back pain. Consistent with the original structure proposed by Melzack (1987), results indicated that the SF-MPQ is best represented by a two-factor solution. However, these findings are contrary to results obtained by Burckhardt and Bjelle (1994) who, using their Swedish version of the SF-MPQ, obtained a three-factor solution. Potential explanations for the disparity between the results of the two studies are explored and recommendations for continuing clinical and research applications are offered.

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Little research has addressed McNally's hypothesis [(1996). Anxiety sensitivity is distinguishable from trait anxiety. In: R. M. Rapee (Ed.), Current controversies in the anxiety disorders (pp. 214-227). New York: The Guilford Press.] that anxiety sensitivity (AS) should be negatively associated with the use of arousal-increasing substances. In the present study, we examined the relationship between AS and the self-reported use of two widely available stimulants--nicotine and caffeine--and exercise frequency in a sample of 256 university students. A measure of trait anxiety was also incorporated within the design. The associations between use of both substances and levels of AS and trait anxiety were weak and nonsignificant. Although inconsistent with McNally's hypothesis, some significant findings were found when the lower-order components of AS (i.e., fears of physical, psychological, and publicly observable symptoms of anxiety) were examined. The associations between exercise frequency and the anxiety measures, indicating a negative relationship, were generally consistent with McNally's hypothesis. Implications of these findings are discussed with reference to future investigation.

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In an effort to confirm the factorial validity of the Childhood Trauma Questionnaire (CTQ) across sex, the items from the CTQ for 916 university students were subjected to confirmatory factor analysis. Results indicated that the factor structure for the CTQ was significantly different for men and women. For women, the items from the Physical Abuse subscale did not create a stable factor and thus appear not to be conceptually valid. Conversely, for men, the five-factor model provided a relatively good fit to the data. This investigation provides important information regarding sex differences in the factorial validity of the CTQ. Implications and future research directions are discussed.

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The objective of the present investigation was to clarify the role that anxiety sensitivity (AS) and other related constructs play in headache medication use in patients with recurring headaches. A total of 108 patients (88% female) with chronic recurring headaches (mean duration = 205.6 months) provided complete responses to a self-report inventory administered during a treatment visit to an outpatient neurology clinic. The inventory included measures of depression, trait anger, trait anxiety, fear of pain, AS, and the impact of headache on daily living. AS and fear of pain were used in accordance with their multidimensional conceptualizations. Hierarchical multiple regression analyses were conducted to determine the variables that contributed significantly to the prediction of current over-the-counter analgesic and prescription medication use. After controlling for pain severity, the cognitive anxiety dimension of fear of pain was the only significant predictor of over-the-counter analgesic use. For prescription medication use, the fear of physical catastrophe dimension of AS and the physiological anxiety dimension of fear of pain were significant predictors, although the predictive direction of the former was opposite to that found in prior studies. The models, while significant, accounted for relatively small amounts of variance. Implications of these results and issues of medication abuse and dependency are discussed.

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Interpretation of research on the prevalence and sequelae of childhood trauma has been hindered by the use of assessment instruments with unknown psychometric properties. Thus, we examined the psychometric properties of a new childhood trauma measure, the Childhood Trauma Questionnaire (CTQ). The CTQ has demonstrated strong psychometric properties in clinical samples; limited information exists on its psychometric properties in community samples. Therefore, we explored the factor structure and reliability of the CTQ in a community sample and calculated normative data. Consistent with previous literature, a 5-factor model best described the CTQ, with a hierarchical model also providing excellent fit. Additionally, the CTQ demonstrated acceptable internal consistency. Overall, our findings suggest that the CTQ is appropriate for use in a community sample.

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The prevalence of posttraumatic stress disorder (PTSD) was evaluated in 91 participants attending a community-based substance abuse program. The participants were classified as having PTSD, possible PTSD, or no PTSD using the modified PTSD symptom scale (MPSS; Falsetti, Resnick, H. S., Resnick, P. A. & Kilpatrick, 1993). These groups were then compared on measures of anxiety, depression, and fear using the Beck Anxiety Inventory (BAI), Beck Depression Inventory (BDI), Anxiety Sensitivity Index (ASI), and the Fear Questionnaire (FQ). The results showed that 52.8% of participants had either PTSD (37.4%) or possible PTSD (15.4%). Findings also showed that those with PTSD experienced more potentially traumatic events (e.g., rape, being beaten-up) compared to the possible PTSD and no PTSD participants. The PTSD group also reported significantly greater scores on the ASI, BAI, and BDI than did the no PTSD group, and greater scores on the ASI and BAI than did the possible PTSD group. Further, when using a discriminant function analysis, self-report measures correctly classified 70% of the PTSD group and 80% of a composite group of possible PTSD and no PTSD participants. Implications of these results are discussed.

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Few investigations have addressed whether patient subgroups derived using the Multiaxial Assessment of Pain (MAP) [Turk, D. C., & Rudy, T. E. (1987). Towards a comprehensive assessment of chronic pain patients. Behaviour Research and Therapy, 25, 237-249; Turk, D. C., & Rudy, T. E. (1988). Toward an empirically derived taxonomy of chronic pain patients: integration of psychological assessment data. Journal of Consulting and Clinical Psychology, 56, 233-238.] differ with regard to fear and avoidance. It has, however, been reported that dysfunctional patients exhibit more pain-specific fear and avoidance than patients classified as interpersonally distressed or minimizers/adaptive copers [Asmundson, G. J. G., Norton, G. R., & Allerdings, M. D. (1997). Fear and avoidance in dysfunctional chronic back pain patients. Pain, 69, 231-236.]. We attempted to extend these findings by examining two fear constructs that are receiving increased attention in the chronic pain literature-anxiety sensitivity and PTSD. The sample comprised 115 patients with chronic pain. Of these, 14 (12.2%) were classified as dysfunctional, 21 (18.3%) as interpersonally distressed and 47 (40.8%) as minimizers/adaptive copers. Between-group differences were observed on the fear of cognitive and emotional dyscontrol dimension of anxiety sensitivity, total and symptom cluster scores on the PTSD measure, and depression. No differences were observed for the fear of somatic sensations dimension of anxiety sensitivity or agoraphobia, social phobia, and blood/injury fears. Dysfunctional patients generally exhibited elevated scores relative to one or both of the other MAP subgroups on fear of cognitive and emotional dyscontrol, depressed affect, PTSD symptom total score and PTSD symptom cluster scores. As well, a substantial proportion of dysfunctional and interpersonally distressed patients were classified as having PTSD (71.4 and 42.9%, respectively) when compared to minimizers/adaptive copers (21.3%). These results suggest that MAP subgroups differ with regard to their propensity to be(come) fearful and in their likelihood of having PTSD. Theoretical and clinical implications are discussed.

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OBJECTIVE: The goal of this study was to clarify whether patients with chronic pain selectively attend to syndrome-specific (i.e., pain-related) information and, if so, to determine whether this occurs at the conscious (i.e., strategic) or unconscious (i.e., automatic) level. SETTING: This study was conducted at a tertiary care rehabilitation center. PATIENTS: Thirty-three patients with chronic back and/or neck pain and 33 healthy volunteers matched for age, sex, and education participated in this study. OUTCOME MEASURES: A computerized version of a modified Stroop color-naming task, with unmasked and masked conditions, was used to assess strategic and automatic information processing of words related to sensory pain, affect pain, physical threat, social threat, and neutral themes. RESULTS: A repeated-measures ANOVA indicated that patients with chronic pain but not healthy volunteers had delayed color-naming latencies to both sensory and affect pain words in the unmasked condition. Color-naming latency differences were not evident for other word types in the unmasked condition or for any word types in the masked condition. Correlational and regression analyses indicated that the delayed color-naming latencies to pain words in the unmasked condition observed for the chronic pain patients were, in part, associated with high pain-specific cognitive anxiety and interference and lower levels of anxiety sensitivity. CONCLUSIONS: Individuals with chronic pain selectively process pain-related cues at the strategic level but not at the automatic level. Implications of the findings and future research directions are discussed.

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