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Spatial and temporal characteristics of temperature effects on cardiovascular disease in Southern China using the Empirical Mode Decomposition method

机译:基于经验模态分解的温度对华南地区心血管疾病影响的时空特征

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摘要

Until now, few studies have analyzed the effects of temperature on cardiovascular disease (CVD) death at different time points. In this study, we chose 9 different cities in the subtropical and tropical areas of China and analyzed the correlation between temperature at different time points and CVD mortality. We completed this study in two steps. First, we analyzed different time trend decomposition data related to CVD mortality in different populations within the 9 selected cities using empirical mode decomposition (EMD). Second, we created a regression fitting analysis of CVD mortality and temperatures at different time periods. The results showed that the CVD mortality of subtropical and tropical areas in southern Chinese cities represented spatial heterogeneity. The CVD mortality rates in Beihai, Hefei and Nanning showed rising trends, whereas the CVD mortality rates in Haikou, Guilin and Changde appeared to be decreasing. At the daily, seasonal and year time scales, low temperatures were negatively correlated with CVD mortality. Other than at the daily time scale, high temperatures did not significantly influence CVD mortality. This article will help to develop appropriate measures to reduce temperature-related mortality risk in different populations within the subtropical and tropical regions of China.
机译:迄今为止,很少有研究分析温度在不同时间点对心血管疾病(CVD)死亡的影响。在这项研究中,我们选择了中国亚热带和热带地区的9个不同城市,并分析了不同时间点的温度与CVD死亡率之间的相关性。我们分两步完成了这项研究。首先,我们使用经验模态分解(EMD)分析了9个选定城市中不同人群与CVD死亡率相关的不同时间趋势分解数据。其次,我们创建了不同时间段的CVD死亡率和温度的回归拟合分析。结果表明,中国南方城市亚热带和热带地区的CVD死亡率代表了空间异质性。北海,合肥和南宁的CVD死亡率呈上升趋势,而海口,桂林和常德的CVD死亡率呈下降趋势。在每日,季节性和年度时间尺度上,低温与CVD死亡率呈负相关。除了每天的时间范围外,高温并未显着影响CVD的死亡率。本文将有助于制定适当的措施来降低中国亚热带和热带地区不同人群与温度相关的死亡风险。

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