Ru-Qing Liu1, Zhengmin Qian2, Si-Quan Wang3, Michael G Vaughn4, Sarah Dee Geiger5, Hong Xian6, Shao Lin7, Gunther Paul8, Xiao-Wen Zeng1, Bo-Yi Yang1, Li-Wen Hu1, Shu-Li Xu1, Mo Yang9, Guang-Hui Dong1. 1. Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou, China. 2. Department of Epidemiology, College of Public Health and Social Justice, Saint Louis University, Saint Louis, Missouri. 3. Department of Statistics and Operations Research, Hong Kong Baptist University, Hong Kong, China. 4. School of Social Work, College of Public Health and Social Justice, Saint Louis University, Saint Louis, Missouri. 5. School of Nursing and Health Studies, Northern Illinois University, DeKalb, Illinois. 6. Department of Biostatistics, College for Public Health and Social Justice, Saint Louis University, Saint Louis, Missouri. 7. Department of Epidemiology and Biostatistics, School of Public Health, State University of New York, Albany, New York. 8. Faculty of Health, School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia. 9. Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China.
Abstract
STUDY OBJECTIVES: Existing studies on sleep quality and associated obesity are inconsistent, and few studies have prospectively evaluated the association between sleep quality and abdominal obesity among Chinese individuals. To fill this void, the current study aimed to assess the association between sleep quality and abdominal obesity in a rural Chinese population. METHODS: A representative sample of 9,404 adults aged 20-93 years in northeastern China was selected between 2012 and 2013 by a multistage cluster and random sampling method. Sleep quality was evaluated by the Pittsburgh Sleep Quality Index (PSQI), where a score of 6 or higher indicated sleep disorder. Abdominal obesity was measured by waist circumference (WC), with abdominal obesity defined as WC > 90 cm for men and WC > 80 cm for women. RESULTS: Male participants with abdominal obesity had higher global PSQI scores in addition to higher subscores in almost all of the elements compared to normal values. The odds ratios of abdominal obesity among participants with sleep disorders were 1.64 (95% confidence interval [CI]: 1.39-1.95) and 1.14 (95% CI: 0.98-1.32) for males and females compared to the reference group. The risk in all sleep elements was significantly increased, with odds ratios ranging from 1.28 (95% CI: 1.08-1.51) to 5.81 (95% CI: 3.54-9.53) for males. The risk only in four elements was significantly increased, from 1.28 (95% CI: 1.12-1.47) to 2.27 (95% CI: 1.36-3.80) for females. CONCLUSIONS: Poor sleep quality was associated with abdominal obesity in Chinese. Furthermore, effects in males were larger than those in females.
STUDY OBJECTIVES: Existing studies on sleep quality and associated obesity are inconsistent, and few studies have prospectively evaluated the association between sleep quality and abdominal obesity among Chinese individuals. To fill this void, the current study aimed to assess the association between sleep quality and abdominal obesity in a rural Chinese population. METHODS: A representative sample of 9,404 adults aged 20-93 years in northeastern China was selected between 2012 and 2013 by a multistage cluster and random sampling method. Sleep quality was evaluated by the Pittsburgh Sleep Quality Index (PSQI), where a score of 6 or higher indicated sleep disorder. Abdominal obesity was measured by waist circumference (WC), with abdominal obesity defined as WC > 90 cm for men and WC > 80 cm for women. RESULTS: Male participants with abdominal obesity had higher global PSQI scores in addition to higher subscores in almost all of the elements compared to normal values. The odds ratios of abdominal obesity among participants with sleep disorders were 1.64 (95% confidence interval [CI]: 1.39-1.95) and 1.14 (95% CI: 0.98-1.32) for males and females compared to the reference group. The risk in all sleep elements was significantly increased, with odds ratios ranging from 1.28 (95% CI: 1.08-1.51) to 5.81 (95% CI: 3.54-9.53) for males. The risk only in four elements was significantly increased, from 1.28 (95% CI: 1.12-1.47) to 2.27 (95% CI: 1.36-3.80) for females. CONCLUSIONS: Poor sleep quality was associated with abdominal obesity in Chinese. Furthermore, effects in males were larger than those in females.
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