Do shorter delays to care and mental health system renewal translate into better occupational outcome after mental disorder diagnosis in a cohort of Canadian military personnel who returned from an Afghanistan deployment?

Recommendations for follow-up care during post-deployment screening of Canadian Armed Forces personnel: how well does self-reported mental health predict referral decisions?

OBJECTIVE

Canadian Armed Forces (CAF) post-deployment screening aims to facilitate early care for members with mental health issues. The process consists of a questionnaire to screen for mental health problems, followed by an interview with a healthcare provider during which recommendations for follow-up care are provided if needed. In this study, we examined the association of self-reported mental health from the screening questionnaire with recommendation for follow-up care during the interview.

DESIGN

Using screening data collected from CAF members who deployed from 2009 to 2012 (n=14 957), logistic regression analysis was conducted to examine the association of self-reported mental health from the screening questionnaire with clinicians' recommendation for follow-up care.

RESULTS

In total, 19.7% of screened individuals were recommended for follow-up care. In the adjusted logistic regression model, some demographic characteristics, as well current and prior mental healthcare and self-reported mental health problems, had a substantial association with recommendation for follow-up. Compared with each mental health problem's lowest severity category, recommendation for follow-up care was higher by approximately 12%-17% for those with mild to severe depression, 7% for those with panic disorder, 8%-10% for those with mild to severe anxiety, 8% for those experiencing high levels of stressors, 4%-10% for those at risk of alcohol use disorder and 7%-12% for those at risk of post-traumatic stress disorder.

CONCLUSIONS

Although the presence of mental health problems was significantly associated with receiving a follow-up recommendation, the relationships between self-reported mental health and subsequent recommendations for care were not as high as expected. Although this may partly reflect time delays between the questionnaire and interview, further research is needed on the extent to which other factors contributed to referral decisions.

Does recommended mental health follow-up care occur after postdeployment screening in the Canadian Armed Forces? A retrospective cohort study

OBJECTIVE

To determine Canadian service members' level of adherence to a recommendation for mental health services follow-up that was assigned by clinicians during postdeployment screening.

DESIGN

Retrospective cohort study.

SETTING

Canadian military population.

PARTICIPANTS

The cohort consisted of personnel (n=28 460) with a deployment within the 2009-2014 time frame. A stratified random sample (n=3004) was selected for medical chart review. However, we restricted our analysis to individuals whose completed screening resulted in a recommendation for mental health services follow-up (sample n=316 (weighted n=2034) or 11.2% of screenings.

INTERVENTIONS

Postdeployment health screening.

PRIMARY OUTCOME MEASURE

The outcome was adherence to a screening-indicated mental health services follow-up recommendation, assessed within 90 days, a preferred delay, and within 365 days, a delay considered partially associated with the screening recommendation.

RESULTS

Adherence within 90 days of screening was 71.1% (95% CI 59.7% to 82.5%) for individuals with 'major' mental health concerns, 36.1% (95% CI 23.9% to 48.4%) for those with 'minor' mental health concerns, and 46.8% (95% CI 18.6% to 75.0%), for those with psychosocial mental health concerns; the respective 365-day adherence fractions were 85.3% (95% CI 76.1% to 94.5%), 55.7% (95% CI 42.0% to 69.4%) and 48.6% (95% CI 20.4% to 76.9%). Logistic regression indicated that a 90-day adherence among those with a 'major' mental health concern was higher among those screening after 2012 (adjusted OR (AOR) 5.45 (95% CI 1.08 to 27.45)) and lower, with marginal significance, among those with deployment durations greater than 180 days (AOR 0.35 (95% CI 0.11 to 1.06)).

CONCLUSIONS

On an individual level, screening has the potential to identify when a care need is present and a follow-up assessment can be recommended; however, we found that adherence to this recommendation is not absolute, suggesting that administrative checks and possibly, process refinements would be beneficial to ensure that care-seeking barriers are minimised.

The Factors Associated With Telehealth Use and Avoidance During the COVID-19 Pandemic: Longitudinal Survey

BACKGROUND

Social distancing requirements due to the COVID-19 pandemic saw a rapid increase in the delivery of telehealth consultations as an alternative to face-to-face health care services.

OBJECTIVE

The aims of this study were to assess the use and acceptability of telehealth during the early stages of the pandemic and identify factors associated with telehealth avoidance during this period.

METHODS

Data were obtained from waves 4 and 7 of a longitudinal survey designed to assess the impact of the COVID-19 pandemic on the health and behavior of a representative sample of Australian adults. Participants reported on their use or avoidance of telehealth during the assessment period, as well as the mode of telehealth used and acceptability.

RESULTS

Approximately 30% of participants reported using telehealth during the assessment periods, with the most common telehealth modality being the telephone. Acceptance of telehealth was generally high and was higher among those who used telehealth compared with those who did not. Approximately 18% of participants reported avoiding health care due to telehealth. Across assessment waves, avoidance was associated with younger age, speaking a language other than or in addition to English, having a current medical diagnosis, and lower levels of telehealth acceptability.

CONCLUSIONS

While most participants in this study were accepting of telehealth services, there remain barriers to use, especially among those from particular sociodemographic groups. At a population level, avoidance of health services in nearly one in five adults may have considerable long-term impacts on morbidity and potentially mortality. Targeted efforts to promote engagement with telehealth services are critical if these adverse outcomes are to be avoided, particularly during periods when access to face-to-face services may be limited.

Causal theoretical frameworks that explain veteran mental health help-seeking behavior: a scoping review protocol

OBJECTIVE

This scoping review will determine what causal theoretical frameworks have been used to examine veteran mental health help-seeking behavior. The review will also examine the causal factors proposed by these theoretical frameworks, and whether they account for the complex cultural, social, and affective experiences of veterans, which may drive both uptake or avoidance of mental health help-seeking.

INTRODUCTION

Some military veterans delay mental health help-seeking, preventing early intervention, creating poor long-term quality of life and functional outcomes, and increasing the likelihood of reaching crisis point before seeking help. There is a distinct lack of research utilizing causal motivational frameworks to explain veteran mental health help-seeking behavior (both engagement and avoidance). To date, no review has been conducted on motivational frameworks used to explain veteran help-seeking behavior. This scoping review will be the first to identify the motivational models that have been used to explain veteran mental health help-seeking, as well as table the proposed causal factors, and determine whether the models account for the cultural, social, and affective experiences of veterans.

INCLUSION CRITERIA

This scoping review will only consider studies on veteran cohorts. Studies in English that utilize or create an explanatory theory, model, or framework for veteran mental health help-seeking behavior will be included. Literature that focuses solely on intentions rather than behavior will be excluded.

METHODS

Published and unpublished studies and gray literature will be included. Titles and abstracts will be screened, followed by full-text screening. Factors, theories, models, and frameworks used to explain veteran help-seeking behavior will be extracted, charted, and narratively summarized. The JBI methodology for scoping reviews will be used.

Pathways to mental health care in active military populations across the Five-Eyes nations: An integrated perspective

Military service is associated with increased risk of mental health problems. Previous reviews have pointed to under-utilization of mental health services in military populations. Building on the most recent systematic review, our narrative, critical review takes a complementary approach and considers research across the Five-Eyes nations from the past six years to update and broaden the discussion on pathways to mental healthcare in military populations. We find that at a broad population level, there is improvement in several indicators of mental health care access, with greater gains in initial engagement, time to first treatment contact, and subjective satisfaction with care, and smaller gains in objective indicators of adequacy of care. Among individual-level barriers to care-seeking, there is progress in improving recognition of need for care and reducing stigma concerns. Among organizational-level barriers, there are advances in availability of services and cultural acceptance of care-seeking. Other barriers, such as concerns around confidentiality, career impact, and deployability persist, however, and may account for some remaining unmet need. To address these barriers, new initiatives that are more evidence-based, theoretically-driven, and culturally-sensitive, are therefore needed, and must be rigorously evaluated to ensure they bring about additional improvements in pathways to care.

Does screening shorten delays to care for post-deployment mental disorders in military personnel? A longitudinal retrospective cohort study

OBJECTIVE

To determine whether post-deployment screening is associated with a shorter delay to diagnosis and care among individuals identified with a deployment-related mental disorder.

DESIGN

Retrospective cohort study.

SETTING

Canadian military population.

PARTICIPANTS

The cohort consisted of personnel (n=28 460) with a deployment within the 2009 to 2014 time frame. A stratified random sample (n=3004) was selected for medical chart review. We restricted our analysis to individuals who had an opportunity to undergo screening and were subsequently diagnosed with a mental disorder that a clinician indicated was deployment-related (n=1157).

INTERVENTIONS

Post-deployment health screening.

MAIN OUTCOME MEASURE

The outcome was delay to diagnosis and care, the latency from individuals' deployment return to their mental disorder diagnosis date. Cox proportional hazards regression assessed screening's influence on this outcome.

RESULTS

74.4% of the study population had screened. Overall, the median delay to care was 766 days, 578 days among screeners and 928 days among non-screeners-a 350-day difference. Cox regression indicated that screeners had a significantly shorter delay to care (adjusted HR (aHR), 1.43 (95% CI, 1.11 to 1.86)). Screening findings had a substantial influence on delay to care. Identification of a mental health concern, whether a 'major' concern (aHR, 3.36 (95% CI, 2.38 to 4.73)) or a 'minor' concern (aHR, 1.46 (95% CI, 1.08 to 1.99)), and a recommendation for mental health services follow-up (aHR, 2.35 (95% CI, 1.73 to 3.21)) were strongly associated with shorter delays to care relative to non-screeners.

CONCLUSIONS

Reduced delays to care are anticipated to lead to beneficial outcomes for both the individual and military organisation. We found that screening was associated with a shortened delay to care for mental disorders that were deployment-related. Future work will further explore this screening's components and optimisation strategies.

Retrospective cohort study of compliance with post-deployment screening in the Canadian Armed Forces

OBJECTIVE

Canadian Armed Forces (CAF) personnel who return from certain international deployments are required to complete post-deployment screening (PDS) 90 to 180 days post-deployment; the primary goal of PDS is early detection of mental health problems that aims for reduced delays to care provision. We investigated service members' compliance with the PDS completion requirement and the factors associated with this compliance; a secondary objective was to investigate completion timing.

DESIGN

The study used a retrospective cohort of CAF personnel (n=28 460) who had deployments over 01 January 2009 to 31 December 2014; inferences were based on a probabilistic sample (n=3004).

PRIMARY OUTCOME

The primary outcome was PDS completion. We assessed the timing of PDS completion, comparing non-compliant (early, late or no completion) with compliant completions (90 to 180 days post-deployment) among deployments that required screening. Kaplan-Meier plots summarised time-to-completion and logistic regression assessed the covariate associations with compliant completion. Covariate-adjusted marginal compliance prevalence differences (MPD) were computed.

RESULTS

67.3% (95% CI65.0 to 69.6) of deployments that required PDS had one completed; 43.3% (95%CI 40.6 to 46.0) were completed within the compliant period. Compliant completion was higher with lower ranks (MPD=10.6%, relative to officers), combat arms occupations (MPD=8.4%), Afghanistan deployments (MPD=19.2%), longer deployments (MPD=10.1%) and among those without a past mental health problem (MPD=9.7%).

CONCLUSIONS

Our findings suggest that some selective processes may be occurring where those perceived to be at higher risk for post-deployment mental health problems are more compliant with PDS completion. However, PDS completion and compliant completion were lower than expected and this suggests a need to reinforce instruction on the guidelines and objectives of PDS among service members in the CAF.

Delays in making initial treatment contact after the first onset of mental health disorders in the Argentinean Study of Mental Health Epidemiology

AIMS

While there are effective treatments for psychiatric disorders, many individuals with such disorders do not receive treatment and those that do often take years to get into treatment. Information regarding treatment contact failure and delay in Argentina is needed to guide public health policy and planning. Therefore, this study aimed to provide data on prompt treatment contact, lifetime treatment contact, median duration of treatment delays and socio-demographic predictors of treatment contact after the first onset of a mental disorder.

METHODS

The Argentinean Study of Mental Health Epidemiology (EAESM) is a multistage probability sample representative of adults (aged 18+) living in large urban areas of Argentina. A total of 2116 participants were evaluated with the World Mental Health Composite International Diagnostic Interview to assess psychiatric diagnosis, treatment contact and delay.

RESULTS

Projections of cases that will make treatment contact by 50 years taken from a survival curve suggest that the majority of individuals with a mood (100%) or anxiety disorder (72.5%) in Argentina whose disorder persist for a sufficient period of time eventually make treatment contact while fewer with a substance disorder do so (41.6%). Timely treatment in the year of onset is rare (2.6% for a substance disorder, 14.6% for an anxiety disorder and 31.3% of those with a mood disorder) with mean delays between 8 years for mood disorders and 21 years for anxiety disorders. Younger cohorts are more likely to make treatment contact than older cohorts, whereas those with earlier ages of disorder onset are least likely to make treatment contact. Those with anxiety disorders and major depressive disorder are more likely to make treatment contact when they have comorbid disorders, whereas those with substance use disorders are less likely.

CONCLUSIONS

Argentina needs to implement strategies to get individuals with substance use disorders into treatment, and to reduce treatment delays for all, but particularly to target early detection and treatment among children and adolescents.

Posttraumatic stress disorder: a model of the longitudinal course and the role of risk factors

Posttraumatic stress disorder (PTSD) differs from other anxiety disorders in that experience of a traumatic event is necessary for the onset of the disorder. The condition runs a longitudinal course, involving a series of transitional states, with progressive modification occurring with time. Notably, only a small percentage of people that experience trauma will develop PTSD. Risk factors, such as prior trauma, prior psychiatric history, family psychiatric history, peritraumatic dissociation, acute stress symptoms, the nature of the biological response, and autonomic hyperarousal, need to be considered when setting up models to predict the course of the condition. These risk factors influence vulnerability to the onset of PTSD and its spontaneous remission. In the majority of cases, PTSD is accompanied by another condition, such as major depression, an anxiety disorder, or substance abuse. This comorbidity can also complicate the course of the disorder and raises questions about the role of PTSD in other psychiatric conditions. This article reviews what is known about the emergence of PTSD following exposure to a traumatic event using data from clinical studies.

Stigma doesn't discriminate: physical and mental health and stigma in Canadian military personnel and Canadian civilians

Background

Illness-related stigma has been identified as an important public health concern. Past research suggests there is a disproportionate risk of mental-health stigma in the military, but this same finding has not yet been established for physical-health stigma. The current study aimed to assess the independent contribution of mental and physical health on both enacted stigma (discriminatory behaviour) and felt stigma (feelings of embarrassment) and to determine whether these associations were stronger for military personnel than civilians.

Methods

Data were obtained from the 2002 Canadian Community Health Survey - Mental Health and Well-being and its corresponding Canadian Forces Supplement. Logistic regressions were used to examine a potential interaction between population (military [N = 1900] versus civilian [N = 2960]), mental health, and physical health in predicting both enacted and felt stigma, with adjustments made for socio-demographic information, mental health characteristics, and disability.

Results

Mental health did not predict enacted or felt stigma as a main effect nor in an interaction. There was a strong link between physical health and enacted and felt stigma, where worse physical health was associated with an increased likelihood of experiencing both facets of stigma. The link between physical health and enacted stigma was significantly stronger for military personnel than for civilians.

Conclusions

Physical health stigma appears to be present for both civilians and military personnel, but more so for military personnel. Elements of military culture (e.g., the way care is sought, culture of toughness, strict fitness requirements) as well as the physical demands of the job could be potential predictors of group differences.

Do Investments in Mental Health Systems Result in Greater Use of Mental Health Services? National Trends in Mental Health Service Use (MHSU) in the Canadian Military and Comparable Canadian Civilians, 2002-2013

BACKGROUND

Mental disorders constitute a significant public health problem worldwide. Ensuring that those who need mental health services access them in an appropriate and timely manner is thus an important public health priority. We used data from 4 cross-sectional, nationally representative population health surveys that employed nearly identical methods to compare MHSU trends in the Canadian military versus comparable civilians.

METHOD

The surveys were all conducted by Statistics Canada, approximately a decade apart (Military-2002, Military-2013, Civilian-2002, and Civilian-2012). The sample size for the pooled data across the surveys was 35,984. Comparisons across the 4 surveys were adjusted for differences in need in the 2 populations at the 2 time points.

RESULTS

Our findings suggested that first, in the Canadian military, there was a clear and consistent pattern of improvement (i.e., increase) in MHSU over the past decade across a variety of provider types. The magnitudes of the changes were large, representing an absolute increase of 7.15% in those seeking any professional care, corresponding to an 84% relative increase. Second, in comparable Canadian civilians, MHSU remained either unchanged or increased only slightly. Third, the increases in MHSU over time were consistently greater in the military than in the comparable civilian sample.

CONCLUSIONS

Our findings point to advantages with respect to MHSU of the military mental health system over the civilian system in Canada; these advantages have widened substantially over time. These findings speak strongly to the potential impact of analogous changes in other health systems, both military and civilian.

Common mental disorders among US army aviation personnel: Prevalence and return to duty

OBJECTIVES

Assess the prevalence of US Army aviation personnel with common mental disorders, the percentage that return to duty following mental health treatment, and predictors of return to duty.

METHODS

Examined the prevalence over a 5-year period. The percentage of personnel who were granted a waiver to return to flying duty following treatment was also determined.

RESULTS

The results revealed a 5-year prevalence of 0.036 (95% CI = 0.034-0.038) for personnel experiencing one or more of the mental disorders (N = 1,155). Prevalence was highest for adjustment disorders and for nonpilot participants. Overall, personnel were granted a waiver 55.3% of the time and suspended or disqualified 44.7% of the time. Waivers were more likely to be granted for an adjustment disorder and for pilots.

CONCLUSIONS

Discussion focuses on the importance of aviation personnel receiving mental health treatment when problems are not severe to maximize the likelihood of returning to duty.

Delayed unpaired extinction as a treatment for hyperarousal of the rabbit nictitating membrane response and its implications for treating PTSD

Treatment for PTSD (Post-traumatic stress disorder) is rarely available immediately after trauma and often delayed for weeks or months after an event. In a rabbit eyeblink conditioning model of PTSD, we have previously shown that presentations of a tone conditioned stimulus (CS) and shock unconditioned stimulus (US) in an explicitly unpaired manner known as unpaired extinction is effective in reducing CS responding and US hyperarousal even if shock intensity is reduced eight-fold and elicits only minimal responding. Here we determined if delayed delivery of unpaired extinction would still be effective in extinguishing hyperarousal. Rabbits were tested for sensitivity to shock before CS-US pairings and after six days of unpaired extinction presented a day, a week or a month after CS-US pairings. Hyperarousal was extinguished a day and a week after conditioning but not after a month suggesting a significant delay in "treatment" can make hyperarousal persist. We next assessed if this persistence of hyperarousal was associative by comparing rabbits given CS-US pairings to those given explicitly unpaired CS and US presentations, measuring hyperarousal a day and a month later, followed by unpaired extinction and hyperarousal assessment. After four weeks, there was an increase in responding for all rabbits but only rabbits receiving CS-US pairings showed a significant increase in associatively-mediated hyperarousal. Importantly, both paired and unpaired groups showed increased levels of responding after unpaired extinction suggesting treatment delayed for too long may no longer be effective and could cause generalized hyperarousal.

Delay to mental healthcare in a cohort of Canadian Armed Forces personnel with deployment-related mental disorders, 2002-2011: a retrospective cohort study

OBJECTIVE

To assess whether the delay to care among Canadian Armed Forces (CAF) personnel who sought care for a mental disorder changed over time and in association with CAF mental health system augmentations.

DESIGN

A stratified, random sample (n=2014) was selected for study from an Afghanistan-deployed cohort (N=30 513) and the 415 (weighted N=4108) individuals diagnosed with an Afghanistan service-related mental disorder were further assessed. Diagnosis-related data were abstracted from medical records (22 June 2010 to 30 May 2011). Other data were extracted from administrative databases. Delay to care was assessed across five mental health system eras: 2002/2004, 2005/2006, 2007, 2008 and 2009/2010. Weighted Cox proportional hazards regression assessed the association between era, handled as a time-dependent covariate, and the outcome while controlling for a broad range of potential confounders (ie, sociodemographic, military and clinical characteristics). Taylor series linearisation methods and sample design weights were applied in generating descriptive and regression analysis statistics.

PRIMARY OUTCOME

The outcome was the delay to mental healthcare, defined as the latency from most recent Afghanistan deployment return date to diagnosis date, among individuals with an Afghanistan service-related mental disorder diagnosis.

RESULTS

Mean delay to care was 551 days (95% CI 501 to 602); the median was 400 days. Delay to care decreased in subsequent eras relative to 2002/2004; however, only the most recent era (2009/2010) was statistically significant (adjusted HR (aHR): 3.01 (95% CI 1.91 to 4.73)). Men, operations support occupations, higher ranks, non-musculoskeletal comorbidities and fewer years of military service were also independently associated with longer delays to care.

CONCLUSIONS

CAF mental health system changes were associated with reduced delays to mental healthcare. Further evaluation research is needed to identify the key system changes that were most impactful.

The 2013 Canadian Forces Mental Health Survey: Background and Methods

OBJECTIVE

The 2013 Canadian Forces Mental Health Survey (CFMHS) collected detailed information on mental health problems, their impacts, occupational and nonoccupational determinants of mental health, and the use of mental health services from a random sample of 8200 serving personnel. The objective of this article is to provide a firm scientific foundation for understanding and interpreting the CFMHS findings.

METHODS

This narrative review first provides a snapshot of the Canadian Armed Forces (CAF), focusing on 2 key determinants of mental health: the deployment of more than 40,000 personnel in support of the mission in Afghanistan and the extensive renewal of the CAF mental health system. The findings of recent population-based CAF mental health research are reviewed, with a focus on findings from the very similar mental health survey done in 2002. Finally, key aspects of the methods of the 2013 CFMHS are presented.

RESULTS

The findings of 20 peer-reviewed publications using the 2002 mental health survey data are reviewed, along with those of 25 publications from other major CAF mental health research projects executed over the past decade.

CONCLUSIONS

More than a decade of population-based mental health research in the CAF has provided a detailed picture of its mental health and use of mental health services. This knowledge base and the homology of the 2013 survey with the 2002 CAF survey and general population surveys in 2002 and 2012 will provide an unusual opportunity to use the CFMHS to situate mental health in the CAF in a historical and societal perspective.

Prevalence of Past-Year Mental Disorders in the Canadian Armed Forces, 2002-2013

OBJECTIVE

More than 40,000 Canadian Armed Forces (CAF) personnel have deployed in support of the mission in Afghanistan since 2002. Over the same period, the CAF strengthened its mental health system. This article explores the effect of these events on the prevalence of past-year mental disorders over the period 2002-2013.

METHOD

The data sources were 2 highly comparable population-based mental health surveys of CAF Regular Force personnel done in 2002 and 2013 (n = 5155 and 6996, respectively). Data were collected via in-person interviews with Statistics Canada personnel using the World Health Organization's Composite International Diagnostic Interview to assess past-year disorders.

RESULTS

In 2013, 16.5% had 1 or more of the 6 past-year disorders assessed in the survey, with the most common conditions being major depressive episode (MDE), posttraumatic stress disorder (PTSD), and generalized anxiety disorder (GAD), which affected 8.0%, 5.3%, and 4.7%, respectively. The prevalence of PTSD, GAD, and panic disorder has increased significantly since 2002 (adjusted odds ratios from logistic regression models = 2.1, 3.0, and 1.9, respectively), while no change was seen for MDE. The comorbidity of mood and anxiety disorders increased significantly over time, being seen in 27.4% and 41.0% of those with mental disorders in 2002 and 2013, respectively.

CONCLUSION

There has been an increase in the prevalence of PTSD and other anxiety disorders and of the extent of comorbidity of mood and anxiety disorders in CAF personnel over the period 2002-2013.

Disability and Mental Disorders in the Canadian Armed Forces

OBJECTIVES

The initial goal was to validate the use of a self-report measure of disability in the Canadian Armed Forces (CAF). The main goal was to document the extent of disability in personnel with and without mental disorders.

METHODS

Data were obtained from the 2013 Canadian Forces Mental Health Survey; the sample included 6700 Regular Forces personnel. Disability was measured with the 12-item version of the World Health Organization Disability Assessment Schedule (WHODAS-2); established cut points were used to demarcate severe, moderate, minimal, and no disability. The following recent (past-year) and remote (lifetime but not past-year) disorders were assessed with diagnostic interviews: posttraumatic stress disorder, major depressive episode, generalized anxiety disorder, panic disorder, and alcohol use disorder.

RESULTS

The WHODAS-2 showed good internal consistency (α = 0.89) and a 1-factor structure. Most personnel had no disability (59.2%) or minimal disability (30.8%). However, an important minority had moderate or severe disability (8.4% and 1.6%, respectively). Individuals with recent disorders reported greater disability than those without lifetime disorders, although many had minimal or no disability (41.2% and 24.7%, respectively). Disability increased with the number of recent disorders. Relative to those without lifetime disorders, individuals with remote disorders showed slightly greater disability, but most had no disabilty (57.1%) or minimal disability (35.0%).

CONCLUSIONS

The 12-item WHODAS-2 is a valid measure of disability in the CAF. Mental disorders may be important drivers of disability in this population, although limited residual disability is seen in individuals with remote disorders.

Prevalence Comparison of Past-year Mental Disorders and Suicidal Behaviours in the Canadian Armed Forces and the Canadian General Population

OBJECTIVE

Military personnel in Canada and elsewhere have been found to have higher rates of certain mental disorders relative to their corresponding general populations. However, published Canadian data have only adjusted for age and sex differences between the populations. Additional differences in the sociodemographic composition, labour force characteristics, and childhood trauma exposure in the populations could be driving these prevalence differences. Our objective is to compare the prevalence of past-year mental disorders and suicidal behaviours in the Canadian Armed Forces Regular Force with the rates in a representative, matched sample of Canadians in the general population (CGP).

METHODS

Data sources were the 2013 Canadian Forces Mental Health Survey and the 2012 Canadian Community Health Survey-Mental Health. CGP sample was restricted to match the age range, employment status, and history of chronic conditions of Regular Force personnel. An iterative proportional fitting method was used to approximate the marginal distribution of sociodemographic and childhood trauma variables in both samples.

RESULTS

Relative to the matched CGP, Regular Force personnel had significantly higher rates of past-year major depressive episode, generalized anxiety disorder, and suicide ideation. However, lower rates of alcohol use disorder were seen in Regular Force personnel relative to the matched CGP sample.

CONCLUSIONS

Factors other than differences in sociodemographic composition and history of childhood trauma account for the excess burden of mental disorders and suicidal behaviours in the Canadian Armed Forces. Explanations to explore in future research include occupational trauma, selection effects, and differences in the context of administration of the 2 surveys.