Epidemiology of REM sleep behavior disorder: both study design and measurement tool count

REM sleep behavior disorder (RBD) is characterized by both dream enactment behaviors (DEB) and loss of muscle atonia during REM sleep (RSWA).1 To confirm the diagnosis of RBD, a history of DEB reported by patients/caregivers or recorded by video-polysomnography and the demonstration of RSWA during polysomnographic recording are needed.2 However, video-polysomnographic (vPSG) analysis is costly and time-consuming, which significantly limits the feasibility of conducting vPSG study for all subjects in a large-scale epidemiologic study.

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