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23. Association of Nighttime Sleep Duration with Cognitive Impairment among Community-dwelling Older Adults

Author

NIE Huanhuan, LI Huaibiao, YANG Linsheng, HU Bing, SUN Liang, SHENG Jie, ZHANG Dongmei, CHEN Guimei, CHENG Beijing, MENG Xianglong, XU Peiru, XUE Guizhi, TAO Fangbiao

Subjects
aged, cognitive dysfunction, sleep disorders, sleep duration, restricted cubic spline, Medicine
Abstract

Background With the rapid population aging in China, cognitive impairment in older adults has become a growing public health concern. Objective To examine the association between nighttime sleep duration and cognitive impairment among community-dwelling older adults. Methods Data were derived from the cohort of Older Adult Health and Modifiable Environmental Factors established in Fuyang City from July to September 2018, among whom a total of 4 837 older adults with complete data on cognitive function and sleep time were included in this study. General demographic characteristics〔gender, age, living area (urban or rural), education level, occupation, marital status〕, living habits, the history of chronic diseases, sleep duration, and overall cognitive function were extracted. Binary Logistic regression models were used to analyze the association between nighttime sleep duration and cognitive impairment. Restrictive cubic splines were used to further determine potential dose-response relationships between them. Results The participants had a mean nighttime sleep duration of (6.95±1.75) hours, among whom 1 773 (36.65%) slept ≤6 hours per day, 2 088 (43.17%) slept >6-8 hours per day, and 976 (20.18%) slept >8 hours per day. The detection rate of cognitive impairment was 37.44% (1 811/4 837). After adjusting for gender, age, living area, education level and other confounding factors, the detection rate of cognitive impairment was 1.26〔95%CI (1.09, 1.46) 〕 times higher in older adults with nighttime sleep duration of ≤6 hours, and was 1.22〔95%CI (1.03, 1.46) 〕 times higher in older adults with nighttime sleep duration of >8 hours than in those with nighttime sleep duration of >6-8 hours (P8 hours was 1.35〔 (95%CI (1.06, 1.72) 〕 times higher than in those with nighttime sleep duration of >6-8 hours (P6-8 hours (P

Published
2023
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28. Spatio-temporal characteristics and coupling coordination relationship between urbanization and atmospheric particulate pollutants in the Bohai Rim in China

Author

Nie Chengjing, Li Yixuan, Yang Linsheng, Wang Li, and Zhang Fengying

Subjects
Spatial autocorrelation, Urbanization, PM2.5, PM10, Degree of coupling coordination, Ecology, QH540-549.5
Abstract

The coordinated development of urbanization and atmospheric environment is of great significance for improving the quality of urbanization and solving air pollution problems in the Bohai Rim region. We have constructed urbanization quality level system indicator system and atmospheric environment system indicator system. By combining the coupling coordination degree model and spatial autocorrelation method, we analyze the spatiotemporal changes of urbanization, PM2.5, and PM10 of 43 cities in the Bohai Rim region from 2015 to 2020 using the coupling coordination model and spatial autocorrelation method, revealing the spatiotemporal evolution law of the coupling coordination relationship between regional urbanization system and atmospheric environment system. The results show that: (1) The overall urbanization level is increasing and the concentration of atmospheric particulate matter pollution is decreasing from 2015 to 2020 in the Bohai Rim; the urbanization level shows a spatial distribution pattern of high in the northeast and low in the southwest, and the concentrations of PM2.5 and PM10 show a pattern of high in the southwest and low in the northeast, with obvious clustering characteristics; (2) The coupling and coordination relationship between urbanization and atmospheric environment is showing an increasing trend in the Bohai Rim region. During the research period, the lowest, highest, average, and coupling coordination levels of the coupling and coordination scheduling are continuously increasing. The spatial distribution pattern of the coupling coordination degree is low in the southwest and high in the northeast, and there is a strong regional convergence of the coupling coordination type transformation, with certain spatial and temporal dependence.

Published
2023
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44. Progress and prospects of applied research on physical geography and the living environment in China over the past 70 years (1949–2019)

Author

Chen, Fahu, Wu, Shaohong, Cui, Peng, Cai, Yunlong, Zhang, Yili, Yin, Yunhe, Liu, Guobin, Ouyang, Zhu, Ma, Wei, Yang, Linsheng, Wu, Duo, Lei, Jiaqiang, Zhang, Guoyou, Zou, Xueyong, Chen, Xiaoqing, Tan, Minghong, Wang, Xunming, Bao, Anming, Cheng, Weixin, Dang, Xiaohu, Wei, Binggan, Wang, Guoliang, Wang, Wuyi, Zhang, Xingquan, Liu, Xiaochen, and Li, Shengyu

Published
2021
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48. Medical and Health Geography

Author

Yang, Linsheng, Li, Hairong, Cheng, Yang, Wei, Binggan, Leng, Shuying, Gao, Xizhang, Pei, Tao, Zhang, Guoyou, Chen, Liangfu, Chen, Xi, He, Canfei, He, Daming, Li, Xiaoyan, Lin, Chunye, Liu, Hongyan, Liu, Weidong, Lü, Yihe, Piao, Shilong, Tang, Qiuhong, Tao, Fulu, Tian, Lide, Tong, Xiaohua, Xiao, Cunde, Xue, Desheng, Yang, Linsheng, Yuan, Linwang, Zheng, Yuanming, Zhu, Huiyi, and Zhu, Liping

Published
2017
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49. Environmental Geography

Author

Leng, Shuying, Lin, Chunye, Yang, Yi, Guo, Zhonglu, Zheng, Yuanming, Yang, Linsheng, Li, Bengang, Leng, Shuying, Gao, Xizhang, Pei, Tao, Zhang, Guoyou, Chen, Liangfu, Chen, Xi, He, Canfei, He, Daming, Li, Xiaoyan, Lin, Chunye, Liu, Hongyan, Liu, Weidong, Lü, Yihe, Piao, Shilong, Tang, Qiuhong, Tao, Fulu, Tian, Lide, Tong, Xiaohua, Xiao, Cunde, Xue, Desheng, Yang, Linsheng, Yuan, Linwang, Zheng, Yuanming, Zhu, Huiyi, and Zhu, Liping

Published
2017
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