A community-based cross-sectional study of sleep quality in middle-aged and older adults.
Sleep quality has been widely studied among western countries. However, there is limited population-based evidence on insomnia in Chinese adult populations, especially in middle-aged and older adults. The aims of present study are to (1) examine the prevalence of poor sleep among Chinese middle-age and older adults, (2) compare the Pittsburgh Sleep Quality Index (PSQI) seven domain scores across different physical health statuses, (3) explore factors associated with insomnia.



A cross-sectional survey was conducted using a multi-instrument questionnaire. In total, 1563 residents aged 45 or older in the community were interviewed. The Chinese version of the PSQI was used to assess sleep quality while poor sleep was defined as a total PSQI score >5. Socio-demographic, lifestyle and physical health data were also collected.



The prevalence of poor sleep among adults aged over 45 years was 20.67 %. Clusters logistic regression analysis identified that migrant workers, single marital status, lower education level, no physical exercise, illness within 2 weeks, and a higher total number of chronic diseases contribute to increased risk of poor sleep (P < 0.05). Among three clusters, physical health has the biggest independent contribution on sleep quality.



Our results indicated that poor sleep was common in middle-aged and older adults. It was associated with identity of migrant worker, education level, exercise, illness within 2 weeks and number of chronic disease. Being ill within 2 weeks and having more chronic diseases were the major physical health-related factors contributing to poor sleep in the middle-aged and older people. Physical health may be a major determinant in sleep quality.
Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China.|Institute of Public Health, School of Nursing, Henan University, Kaifeng, China.
Hui-Shan
HS
Zhang
Affiliated Hospital Of Zunyi Medical College, Zunyi, China.
Yuan
Y
Li
Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China.
Hai-Yun
HY
Mo
Gongming People's Hospital & Community Health Service Management Center of Guangming New Area, Shenzhen, China.
De-Xing
DX
Qiu
Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China.
Jing
J
Zhao
Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China.
Jia-Li
JL
Luo
Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China.
Wei-Quan
WQ
Lin
Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China.
Jia-Ji
JJ
Wang
Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, China. peixi001@163.com.|Institute of Public Health, School of Nursing, Henan University, Kaifeng, China. peixi001@163.com.
Pei-Xi
PX
Wang
D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002681:China / Q000453:epidemiology; D003151:Community Health Centers; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011788:Quality of Life; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology* / Q000523:psychology; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires
Cross-sectional study; Middle-aged and older adults; PSQI; Sleep quality