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Int J Biol Sci 2017; 13(6):682-689. doi:10.7150/ijbs.19695 This issue Cite

Research Paper

Sleep Duration and Patterns in Chinese Older Adults: a Comprehensive Meta-analysis

Li Lu^1*, Shi-Bin Wang^{1, 2*}, Wen-Wang Rao^3*, Gabor S. Ungvari^{4, 5}, Chee H. Ng⁶, Helen F.K. Chiu⁷, Juan Zhang⁸, Changgui Kou³, Fu-Jun Jia^2✉, Yu-Tao Xiang^1✉

1. Unit of Psychiatry, Faculty of Health Sciences, University of Macau, Macao SAR, China;
2. Guangdong Mental Health Center, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China;
3. Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, China;
4. University of Notre Dame Australia / Marian Centre, Perth, Australia;
5. School of Psychiatry & Clinical Neurosciences, University of Western Australia, Perth, Australia;
6. Department of Psychiatry, University of Melbourne, Melbourne, Victoria, Australia;
7. Department of Psychiatry, Chinese University of Hong Kong, Hong Kong SAR, China;
8. Faculty of Education, University of Macau, Macao SAR, China.
* These authors contributed equally to the work.

✉ Corresponding authors: Dr. Yu-Tao Xiang, 3/F, Building E12, Faculty of Health Sciences, University of Macau, Avenida da Universidade, Taipa, Macau SAR, China. Fax: +853-2288-2314; Phone: +853-8822-4223; E-mail: ytxiangmo; or Dr. Fu-Jun Jia, Guang Dong Mental Health Centre, Guangdong province, China. E-mail: jiafujuncom More

Abstract

This meta-analysis examined the mean sleep duration and patterns in Chinese older adult population. A literature search was systematically conducted covering major English (PubMed, Embase and PsycINFO) and Chinese (Chinese National Knowledge Infrastructure (CNKI), WanFang and SinoMed) databases. Data in studies with the mean and standard deviation of sleep duration and/or the proportion of short and long sleep durations in Chinese older adults were extracted and pooled using random-effects models. Subgroup analyses were conducted according to gender, region, area, survey time and sample size. A total of 36 studies with 150,616 subjects were included for analyses. The pooled mean sleep duration of 21 studies with available data was 6.82 hours/day (95% CI: 6.59-7.05 hours/day). The estimated proportions of sleep duration <5 hours/day, <6 hours/day, <7 hours/day were 18.8% (95% CI: 1.7%-35.9%), 26.7% (95% CI: 19.7%-33.7%) and 42.3% (95% CI: 34.8%-49.8%), respectively. The pooled proportions for long sleepers were 22.6% (95% CI: 13.9%-31.4%) (>8 hours/day) and 17.6% (95% CI: 12.4%-22.9%) (>9 hours/day). Given the adverse effects of unhealthy sleep patterns, health professionals should pay more attention to sleep patterns in this population in China.

Keywords: Sleep duration, old adult, meta-analysis, China.

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