Characteristics and correlates of sleep duration, daytime napping, snoring and insomnia symptoms among 0.5 million Chinese men and women

Publication date: Available online 6 December 2017
Source:Sleep Medicine
Author(s): Yiping Chen, Christiana Kartsonaki, Robert Clarke, Yu Guo, Canqing Yu, Zheng Bian, Qilian Jiang, Shanpeng Li, Junshi Chen, Liming Li, Zhengming Chen
BackgroundInadequate sleep duration and insomnia can affect both physical and mental health. There is limited evidence, however, on characteristics and correlates of sleep patterns and of insomnia in urban and rural China.MethodsThis cross-sectional study, involving 512,891 adults aged 30-79 years from 10 (5 urban, 5 rural) diverse areas in China, recorded detailed information, using interviewer administered laptop-based questionnaires on sleep patterns (duration, daytime napping and snoring) and insomnia symptoms. Logistic regression was used to examine the associations of sleep patterns and insomnia symptoms with a range of socio-economic, lifestyle, behaviour and health-related factors.ResultsOverall, the mean (SD) sleep duration was 7.38 (1.37) hours, with 23% reporting short (≤6 hours), 16% reporting long (≥9 hours) sleep duration, 21% taking daytime napping and 22% having frequent snoring. Overall, 17% reported having insomnia symptoms, with a higher proportion in women than in men (19% vs 13%), in rural than in urban residents (19% vs 15%), and in individuals who were living alone (23%). The adjusted odds ratios (ORs) of having insomnia symptoms were significantly higher among people with major depressive episodes (6.10, 95% CI: 5.69-6.55), generalized anxiety disorders (7.46, 6.65-8.37), any chronic diseases (1.46; 1.44-1.49). In contrast, the ORs of insomnia symptoms were significantly lower among those reporting napping (0.77, 0.75-0.78) and frequent snoring (0.86, 0.84-0.87).ConclusionsAmong Chinese adults, sleep patterns varied greatly by socioeconomic, lifestyle and health-related factors. The risk of insomnia symptoms was associated with both poor mental and poor physical health status.



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