REM Sleep Behavior Disorder Single-Question Screen
A single yes/no question screens for dream enactment behavior.
The REM Sleep Behavior Disorder Single-Question Screen (RBD1Q) is a brief screening tool that uses a single yes-or-no question to identify dream enactment behaviors linked to the parasomnia REM sleep behavior disorder (RBD). The question asks whether the person has ever been told by someone else, or has suspected themselves, of appearing to act out dreams while asleep—such as punching, flailing arms, or making running movements. In detecting RBD, this screen has a sensitivity of 94% and a specificity of 87%.
The RBD1Q can help establish a diagnosis of REM sleep behavior disorder in individuals with Parkinson’s disease or dementia with Lewy bodies.
Other screening tools for RBD are longer and harder to use in large epidemiological studies, which are needed to estimate how common RBD is. The RBD1Q was developed using data from a case-control study that recruited 484 participants (242 with polysomnogram-confirmed RBD and 242 controls) from twelve centers of the International REM Sleep Behavior Disorder Study Group. Dream enactment behavior was confirmed through patient history or video recording, and the absence of REM sleep muscle paralysis (atonia) was verified by polysomnogram, following the International Classification of Sleep Disorders-2 criteria.
- field
- Sleep medicine, neurology
- known_for
- Single-question screening for REM sleep behavior disorder
- sensitivity
- 94%
- specificity
- 87%
Lore & Background
The RBD1Q queries dream-enactment behavior of RBD with a single yes/no question: 'Have you ever been told, or suspected yourself, that you seem to "act out your dreams" while asleep (for example, punching, flailing your arms in the air, making running movements, etc.)?' It has a sensitivity of 94% and a specificity of 87% in detecting RBD. The RBD1Q can be used to establish a diagnosis of REM sleep behavior disorder in Parkinson's disease and dementia with Lewy bodies.
Reader's Guide
Other screening tools for RBD are lengthy and difficult to use for epidemiological studies, needed to determine the prevalence of RBD. Participants for a case-control study were recruited from twelve centers of the International REM Sleep Behavior Disorder Study Group between 2008 and 2011. The 484 participants (242 individuals with polysomnogram-confirmed RBD and 242 controls) completed the screen. Dream-enactment behavior was established by history or video recording, and the absence of REM sleep muscle paralysis (atonia) was confirmed by polysomnogram, according to the International Classification of Sleep Disorders-2. The RBD1Q provides a brief, validated method for identifying probable RBD in clinical and research settings, particularly in populations with neurodegenerative conditions.
Did You Know?
- The RBD1Q consists of a single yes/no question about acting out dreams.
- It has a sensitivity of 94% and a specificity of 87% for detecting RBD.
- The screen was validated in a study of 484 participants from twelve centers of the International REM Sleep Behavior Disorder Study Group.
- It can be used to establish a diagnosis of RBD in Parkinson's disease and dementia with Lewy bodies.
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