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Systematic review of burnout in PM&R are unique to the USA, potential causative factors, and rates of burnout in allied health disciplines. In the present study, the authors were surprised by the paucity of data outside of the American context. The fundamental structural differences between the American healthcare system, in which most individu- als’ healthcare is purchased in a private marketplace with a multi-payer system, and socialized, single-payer systems which are most common in Canada and Europe (16), make it difficult to determine whether system and organizational factors contribute to burnout in physici- ans in the same way. One study from Italy that did not meet inclusion criteria for this review examined burn­ out in a multidisciplinary rehabilitation team, finding a “medium-low” pooled level of burnout amongst all team members, including physicians and other allied healthcare workers (17). Although this study did not report the prevalence of burnout in physicians or other allied health providers, such as physiotherapists, un- derstanding the prevalence and risk/protective factors for burnout amongst all members of multidisciplinary teams may be critical for individuals and institutions committed to tackling burnout and developing orga- nizational culture that promotes wellbeing. Limitations of this systematic review include the ex- clusion of non-English language studies, and the narrow scope, focussing solely on burnout rather than all mental or physical ailments that might contribute to physician distress. The present study is also limited by the small number of available studies, small sample sizes in many of these studies, low quality and American-only evidence of PM&R-specific burnout literature. Scientific journals specific to rehabilitation medicine have featured diverse opinions on burnout, ranging from acknowledging that physicians in PM&R are at increased risk by the nature of work they do (18), to rebuking burnout as a legitimate condition threate- ning physician wellbeing and viewing it as a “myth” and a “cop-out” (19), to describing the prevalence of burnout as a research priority (20). This systematic review presents evidence that strongly challenges the notion that burnout amongst physiatrists is a myth, and underscores the need for additional research to eva- luate the prevalence of burnout in PM&R physicians outside of the American context, to confirm or refute current evidence with larger sample sizes, to explore why physicians in PM&R experience such high rates of burnout, and to better understand risk and protective factors specific to physiatrists. Given that burnout has well-established detrimental consequences for physici- ans, patients, and healthcare institutions, the physiatry community needs to take burnout seriously, parti- 873 cularly because burnout is preventable and treatable (5–7). As a crucial first step, it must be acknowledged that burnout is prevalent in PM&R. There is no consensus on how best to prevent or treat burnout. To date, the authors are not aware of any studies of prevention or treatment of burnout in specialists or trainees in PM&R. Previous recommendations ranged from individual and organizational interventions (5, 7, 22) to focusing on physiatrists’ mission (20) to using collective action to target root causes of marginaliza- tion amongst our patients (21). On an individual level, PM&R specialists and trainees should be given tools to understand, prevent, identify, and treat burnout. Establis- hing relevant core competencies in residency training and continuing medical education resources for specia- lists are two important ways to start. However, placing the onus solely on individuals, and judging burnout as an individual problem, ignores the larger context in which burnout develops. National associations outside of the USA should also undertake to better understand the prevalence of burnout in their members, possible risk or protective factors, and design further initiatives around these findings. Our understanding of putative risk factors amongst physiatrists comes from a single large study (12) that identified system and institutional factors as the main drivers of burnout in PM&R specialists. The authors therefore recommend that departments, institutions, and national associations make burnout a priority to support the health and wellbeing of PM&R specialists and trainees, which is an investment to ensure the delivery of the best possible rehabilitative care. Conclusion As far as the authors are aware, this is the first systema- tic analysis of literature regarding burnout in PM&R. Three studies report burnout prevalence in specialists in PM&R and 2 report burnout in trainees in PM&R. The prevalence of burnout ranged from 48% to 62% in surveys of USA-based PM&R specialists; the pre- valence of burnout ranged from 22.2% to 83.3% in trainees in different stages of training at one institution, and was 50% in a national survey of second-year resi- dents. In the only study (12) reporting risk factors for burnout amongst physiatrists, system and institutional factors were the main drivers of burnout; individual factors were not significantly associated with burnout. All 5 studies use survey methodology and are of low- quality evidence. All available data come from a single country; there is no data on the prevalence of burnout in PM&R specialists or trainees outside of the USA, indicating a significant gap in knowledge. J Rehabil Med 51, 2019