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© Springer-Verlag Wien 2015Aleksandar Videnovic and Birgit Högl (eds.)Disorders of Sleep and Circadian Rhythms in Parkinson’s Disease10.1007/978-3-7091-1631-9_6 6. Insomnia in Parkinson’s Disease Margaret Park1   and Cynthia L. Comella2 (1) Rush University Medical Center, Sleep Disorders Service and Reacher…

Scale Type of disorder assessed Bed partner/informant Period assessed Population studied Number of questions Range of scores (cut–off value) Comments PDSS-2 Nocturnal disturbance Not required, allowed to help Previous week…