Nicholas Carleton
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Dr. R. Nicholas Carleton, Ph.D., R.D. Psychology
Professor of Psychology,
Department of Psychology,
University of Regina
Professor of Psychology,
Department of Psychology,
University of Regina
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Browsing Nicholas Carleton by Author "Afifi, Tracie O."
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Item Open Access Child Maltreatment History, Deployment-Related Traumatic Events, and Past 12-Month Cannabis Use Among Veterans in Canada(Sage, 2023-08-11) Afifi, Tracie O.; Taillieu, Tamara; Salmon, Samantha; Stewart-Tufescu, Ashley; Sareen, Jitender; Enns, Murray W.; Mota, Natalie; Bolton, Shay-Lee; Carleton, R. Nicholas; Heber, Alexandra; VanTil, LindaObjective Cannabis use among veterans in Canada is an understudied public health priority. The current study examined cannabis use prevalence and the relationships between child maltreatment histories and deployment-related traumatic events (DRTEs) with past 12-month cannabis use including sex differences among Canadian veterans. Method Data were drawn from the 2018 Canadian Armed Forces Members and Veterans Mental Health Follow-up Survey (response rate 68.7%; veterans only n = 1,992). Five child maltreatment types and 9 types of DRTEs were assessed in relation to the past 12-month cannabis use. Results The prevalence of lifetime and past 12-month cannabis use was 49.4% and 16.7%, respectively. Females were less likely than males to report lifetime cannabis use (41.9% vs. 50.4%; odds ratio [OR] 0.71; 95% CI, – 0.59 to 0.86). No sex differences were noted for past 12-month cannabis use (14.1% vs. 17.0%; OR 0.80; 95% CI, 0.60 to 1.07). Physical abuse, sexual abuse, neglect, any child maltreatment, most individual DRTEs, and any DRTE were associated with increased odds of past 12-month cannabis use after adjusting for sociodemographic and military variables. Some models were attenuated and/or nonsignificant after further adjustments for mental disorders and chronic pain conditions. Sex did not statistically significantly moderate these relationships. Cumulative effects of having experienced both child maltreatment and DRTEs compared to DRTEs alone increased the odds of past 12-month cannabis use. Statistically significant interaction effects between child maltreatment history and DRTE on cannabis use were not found. Conclusions Child maltreatment histories and DRTEs increased the likelihood of past 12-month cannabis use among Canadian veterans. A history of child maltreatment, compared to DRTEs, indicated a more robust relationship. Understanding the links between child maltreatment, DRTEs, and cannabis use along with mental disorders and chronic pain conditions is important for developing interventions and improving health outcomes among veterans.Item Open Access Daily survey participation and positive changes in mental health symptom scores among Royal Canadian Mounted Police Cadets(Frontiers, 2023-08-04) Shields, Robyn E.; Teckchandani, Taylor A.; Asmundson, Gordon J. G.; Nisbet, Jolan; Krakauer, Rachel L.; Andrews, Katie L.; Maguire, Kirby Q.; Jamshidi, Laleh; Afifi, Tracie O.; Lix, Lisa M.; Brunet, Alain; Sauer-Zavala, Shannon; Krätzig, Gregory P.; Neary, J. Patrick; Sareen, Jitender; Carleton, R. NicholasIntroduction: Royal Canadian Mounted Police (RCMP) officers self-report high levels of mental health disorder symptoms, such as alcohol use disorder, generalized anxiety disorder, major depressive disorder, panic disorder, and posttraumatic stress disorder. Participation in regular mental health monitoring has been associated with improved mental health disorder symptom reporting and may provide an accessible tool to support RCMP mental health. The current study assessed relationships between self-reported mental health disorder symptoms and the completion of daily surveys (i.e., daily mental health disorder symptom monitoring) by RCMP cadets during the Cadet Training Program (CTP). Methods: Participants were RCMP cadets (n = 394; 76.1% men) in the Standard Training Program who completed the 26-week CTP and daily self-monitoring surveys, as well as full mental health assessments at pre-training (i.e., starting the CTP) and pre-deployment (i.e., ~2 weeks prior to deployment to the field). Symptoms of alcohol use disorder, generalized anxiety disorder, major depressive disorder, panic disorder, and posttraumatic stress disorder were assessed. Changes in mental health disorder symptom reporting from pre-training to pre-deployment were calculated. Spearman’s rank correlations were estimated for number of daily surveys completed and change in mental health disorder symptom scores between pre-training and pre-deployment. Results: There were statistically significant inverse relationships between number of daily surveys completed and number of mental health disorder symptoms reported; specifically, cadets who completed more daily surveys during CTP reported fewer symptoms of alcohol use disorder, generalized anxiety disorder, major depressive disorder, panic disorder, and posttraumatic stress disorder. Conclusion: An inverse correlation between number of daily surveys completed and mental health disorder symptom scores indicated that participation in daily mental health monitoring was associated with improvements in self-reported mental health disorder symptoms between pre-training and pre-deployment. Regular self-monitoring of mental health disorder symptoms may help to mitigate mental health challenges among RCMP cadets and officers.Item Open Access Mental Health of Royal Canadian Mounted Police at the Start of the Cadet Training Program(SAGE Publications, 2023-05-02) Carleton, R. Nicholas; Jamshidi, Laleh; Maguire, Kirby Q.; Lix, Lisa M.; Stewart, Sherry H.; Afifi, Tracie O.; Sareen, Jitender; Andrews, Katie L.; Jones, Nicholas A.; Nisbet, Jolan; Sauer-Zavala, Shannon; Neary, J. Patrick; Brunet, Alain; Krätzig, Gregory P.; Fletcher, Amber J.; Teckchandani, Taylor A.; Keane, Terence M.; Asmundson, Gordon J.G.Objective Serving Royal Canadian Mounted Police (RCMP) have screened positive for one or more mental disorders based on self-reported symptoms with substantial prevalence (i.e., 50.2%). Mental health challenges for military and paramilitary populations have historically been attributed to insufficient recruit screening; however, cadet mental health when starting the Cadet Training Program (CTP) was unknown. Our objective was to estimate RCMP Cadet mental health when starting the CTP and test for sociodemographic differences. Method Cadets starting the CTP completed a survey assessing self-reported mental health symptoms (n = 772, 72.0% male) and a clinical interview (n = 736, 74.4% male) with a clinician or supervised trainee using the Mini-International Neuropsychiatric Interview to assess current and past mental health. Results The percentage of participants screening positive for one or more current mental disorders based on self-reported symptoms (15.0%) was higher than the diagnostic prevalence for the general population (10.1%); however, based on clinical interviews, participants were less likely to screen positive for any current mental disorder (6.3%) than the general population. Participants were also less likely to screen positive for any past mental disorder based on self-report (3.9%) and clinical interviews (12.5%) than the general population (33.1%). Females were more likely to score higher than males (all ps<.01; Cohen's ds .23 to .32) on several self-report mental disorder symptom measures. Conclusions The current results are the first to describe RCMP cadet mental health when starting the CTP. The data evidenced a lower prevalence of anxiety, depressive, and trauma-related mental disorders than the general population based on clinical interviews, contrasting notions that more rigorous mental health screening would reduce the high prevalence of mental disorders among serving RCMP. Instead, protecting RCMP mental health may require ongoing efforts to mitigate operational and organizational stressors.Item Open Access Potentially Psychologically Traumatic Event Exposure Histories of new Royal Canadian Mounted Police Cadets(SAGE Publications, 2023-02-05) Andrews, Katie L.; Jamshidi, Laleh; Nisbet, Jolan; Brunet, Alain; Afifi, Tracie O.; Asmundson, Gordon J.G.; Fletcher, Amber J.; Maguire, Kirby Q.; Teckchandani, Taylor A.; Lix, Lisa; Sauer-Zavala, Shannon; Sareen, Jitender; Keane, Terence M.; Neary, J. Patrick; Carleton, R. NicholasObjective Royal Canadian Mounted Police (RCMP) report extremely frequent and varied exposures to potentially psychologically traumatic events (PPTEs). While occupational exposures to PPTEs may be one explanation for the symptoms of mental disorders prevalent among serving RCMP, exposures occurring prior to service may also play a role. The objective of the current study was to provide estimates of lifetime PPTE exposures among RCMP cadets in training and assess for associations with mental disorders or sociodemographic variables. Methods RCMP cadets (n = 772; 72.0% male) beginning the Cadet Training Program (CTP) completed a survey assessing self-reported PPTE exposures as measured by the Life Events Checklist for the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition-Extended. Binomial tests were conducted to compare the current results to previously collected data from the general population, a diverse sample of public safety personnel (PSP) and serving RCMP. Results Cadets reported statistically significantly fewer PPTE exposures for all PPTE types than serving RCMP (all p’s < 0.001) and PSP (all p’s < 0.001) but more PPTE exposures for all PPTE types than the general population (all p’s < 0.001). Cadets also endorsed fewer PPTE types (6.00 ± 4.47) than serving RCMP (11.64 ± 3.40; p < 0.001) and other PSP (11.08 ± 3.23) but more types than the general population (2.31 ± 2.33; p < 0.001). Participants who reported being exposed to any PPTE type reported the exposures occurred 1–5 times (29.1% of participants), 6–10 times (18.3%) or 10 + times (43.1%) before starting the CTP. Several PPTE types were associated with positive screens for one or more mental disorders. There were associations between PPTE types and increased odds of screening positive for post-traumatic stress disorder (PTSD), major depressive disorder (MDD), generalized anxiety disorder (GAD) and social anxiety disorder (SAD) (all p’s < 0.05). Serious transport accident (11.1%), physical assault (9.5%) and sudden accidental death (8.4%) were the PPTEs most identified as the worst event, and all were associated with positive screens for one or more mental disorders. Conclusion The current results provide the first information describing PPTE histories of cadets, evidencing exposure frequencies and types much higher than the general population. PPTE exposures may have contributed to the cadet's vocational choices. The current results support the growing evidence that PPTEs can be associated with diverse mental disorders; however, the results also suggest cadets may be uncommonly resilient, based on how few screened positive for mental disorders, despite reporting higher frequencies of PPTE exposures prior to CTP than the general population.Item Open Access Provincial Correctional Service Workers: The Prevalence of Mental Disorders(Multidisciplinary Digital Publishing Institute, 2020-03-25) Carleton, R. Nicholas; Ricciardelli, Rosemary; Taillieu, Tamara; Mitchell, Meghan M.; Andres, Elizabeth; Afifi, Tracie O.Correctional service employees in Ontario, Canada (n = 1487) began an online survey available from 2017 to 2018 designed to assess the prevalence and correlates of mental health challenges. Participants who provided data for the current study (n = 1032) included provincial staff working in institutional wellness (e.g., nurses) (n = 71), training (e.g., program officers) (n = 26), governance (e.g., superintendents) (n = 82), correctional officers (n = 553), administration (e.g., record keeping) (n = 25 ), and probation officers (n = 144, parole officers). Correctional officers, workers in institutional administration and governance positions, and probation officers reported elevated risk for mental disorders, most notably posttraumatic stress disorder (PTSD) and major depressive disorder. Among institutional correctional staff, 61.0% of governance employees, 59.0% of correctional officers, 43.7% of wellness staff, 50.0% of training staff, and 52.0% of administrative staff screened positive for one or more mental disorders. In addition, 63.2% of probation officers screened positive for one or more mental disorders. Women working as correctional officers were more likely to screen positive than men (p < 0.05). Across all correctional occupational categories positive screens for each disorder were: 30.7% for PTSD, 37.0% for major depressive disorder, 30.5% for generalized anxiety disorder, and 58.2% for one or more mental disorders. Participants between ages 40 and 49 years, working in institutional governance, as an institutional correctional officer, or as a probational officer, separated or divorced, were all factors associated (p < 0.05) with screening positive for one or more mental disorders. The prevalence of mental health challenges for provincial correctional workers appears to be higher than federal correctional workers in Canada and further supports the need for evidence-based mental health solutions.