Objectives: Gold-standard overnight polysomnography does not reliably capture highly variable sleep patterns across the 24-hour day that are common with dementia and often problematic for carers. We evaluated the reliability of automatically scored actigraphy data as an alternative. Methods: Actigraphy recordings were analysed from 15 community-dwelling people with dementia (135 days total) and 14 of their family carers (124 days total). Manual scoring used participant sleep diaries to identify sleep periods.
