Long Sun,1,2 Keqing Li,3 Lili Zhang,3 Yunshu Zhang3 1Centre for Health Management and Policy Research, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People's Republic of China; 2National Health Commission of China Key Laboratory for Health Economics and Policy Research (Shandong University), Jinan, Shandong, People's Republic of China; 3Department of Sleep Medicine, Hebei Provincial Mental Health Center, Baoding, Hebei, People's Republic of

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... espondence: Yunshu Zhang, Department of Sleep Medicine, Hebei Provincial Mental Health Center, 572 Dongfengdong Road, Baoding, Hebei, 071000, People's Republic of China, Tel +86 312-507-9277, Email yunshucoffee@sina.comObjective: Cognitive impairment is a rapidly growing global public health problem in China and worldwide. In the recent decades, emerging studies have explored the associations between sleep disturbances and cognitive impairment. However, the variety of the results imply us that further studies should be conducted for the associations.Methods: This is a cross-sectional study conducted between August and October 2018 in five cities in Hebei province, China. Subjects were 21,376 community residents. Cognitive impairment was screened by the Chinese version of the Mini-Mental State Examination (MMSE). Scales of Athens Insomnia Scale (AIS), Berlin Questionnaire (BQ), REM (rapid eye movement) Sleep Behavior Disorder Questionnaire (RBDQ-HK), Ullanlinna Narcolepsy Scale (CUNS), and Cambridge-Hopkins Restless Legs Syndrome Questionnaire (CH-RLSq) were used to access insomnia, sleep apnea, REM sleep behavior disorder, narcolepsy, and restless leg syndrome.Results: The mean ± SD (standard error) of MMSE, AIS, RBDQ-HK, and CUNS were 27.95 ± 4.79, 2.16 ± 3.39, 5.55 ± 7.75, and 3.76 ± 2.31, respectively. Among the participants, 10.6% and 1.5% of the participants were identified as having a high risk of sleep apnea and restless leg syndrome, respectively. The results of multiple linear regression showed that cognitive impa [...]