Criteria-based probable REM sleep behaviour disorder and risk of Lewy body dementia: analyses of a memory clinic cohort and a community cohort
REM sleep behaviour disorder (RBD) is the strongest prodromal marker of alpha-synucleinopathies, but whether a brief questionnaire carries prognostic information for Lewy body dementia is unclear. We tested whether criteria-based probable RBD (pRBD)—a questionnaire algorithm requiring both core clinical features...