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Prevalence of insomnia and other sleep disturbances by type of dementia. MCI = Mild cognitive impairment; AD = Alzheimer's disease; VaD = vascular dementia; FTD = frontotemporal dementia; LBD = Lewy Body dementia; PDD = Parkinson's disease dementia; SDB = sleep-disordered breathing; RBD = REM behavior disorder; RLS = restless legs syndrome; EDS = excessive daytime sleepiness.
