Comparison of life loss per death attributable to ambient temperature among various development regions: a nationwide study in 364 locations in China

Environmental Health

Yiqing Xu¹  Donghui Jin¹  Junhua Li¹  Chunliang Zhou¹  Yanjun Xu²  Lifeng Lin²  Xiaojun Xu²  Yonghui Zhang²  Siqi Chen³  Tao Liu³  Lingchuan Guo³  Weilin Zeng³  Jianpeng Xiao³  Wenjun Ma³  Xing Li³  Jianxiong Hu³  Qinglong Zhao⁴  Biao Huang⁴  Zhulin Hou⁴  Cunrui Huang⁵  Maigeng Zhou⁶  Peng Yin⁶  Mingfang Qin⁷  Yize Xiao⁷  Min Yu⁸  Ruying Hu⁸  Weiwei Gong⁸ 

[1] Department of environment and health, Hunan Provincial Center for Disease Control and Prevention, 450001, Changsha, China;Guangdong Provincial Center for Disease Control and Prevention, 511430, Guangzhou, China;Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, No.160, Qunxian Road, Panyu District, 511430, Guangzhou, Guangdong, China;Jilin Provincial Center for Disease Control and Prevention, 130062, Changchun, China;School of Public Health, Sun Yat-sen University, 510080, Guangzhou, China;The National Center for Chronic and Noncommunicable Disease Control and Prevention, 100050, Beijing, China;Yunnan Center for Disease Control and Prevention, 650022, Kunming, China;Zhejiang Center for Disease Control and Prevention, 310051, Hangzhou, Zhejiang, China;

关键词: Temperature;    Years of life lost;    Mortality burden;    Socioeconomic development level;   

DOI  :  10.1186/s12940-020-00653-3

来源: Springer

【 摘 要 】

BackgroundSeveral studies have investigated the associations between ambient temperature and years of life lost (YLLs), but few focused on the difference of life loss attributable to temperature among different socioeconomic development levels.ObjectivesWe investigated the disparity in temperature-YLL rate relationships and life loss per death attributable to nonoptimal temperature in regions with various development levels.MethodsThree hundred sixty-four Chinese counties or districts were classified into 92 high-development regions (HDRs) and 272 low-development regions (LDRs) according to socioeconomic factors of each location using K-means clustering approach. We used distributed lag non-linear models (DLNM) and multivariate meta-analysis to estimate the temperature-YLL rate relationships. We calculated attributable fraction (AF) of YLL and temperature-related average life loss per death to compare mortality burden of temperature between HDRs and LDRs. Stratified analyses were conducted by region, age, sex and cause of death.ResultsWe found that non-optimal temperatures increased YLL rates in both HDRs and LDRs, but all subgroups in LDRs were more vulnerable. The disparity of cold effects between HDRs and LDRs was significant, while the difference in heat effect was insignificant. The overall AF of non-optimal temperature in LDRs [AF = 12.2, 95% empirical confidence interval (eCI):11.0–13.5%] was higher than that in HDRs (AF = 8.9, 95% eCI: 8.3–9.5%). Subgroups analyses found that most groups in LDRs had greater AFs than that in HDRs. The average life loss per death due to non-optimal temperature in LDRs (1.91 years, 95% eCI: 1.72–2.10) was also higher than that in HDRs (1.32 years, 95% eCI: 1.23–1.41). Most of AFs and life loss per death were caused by moderate cold in both HDRs and LDRs.ConclusionsMortality burden caused by temperature was more significant in LDRs than that in HDRs, which means that more attention should be paid to vulnerable populations in LDRs in planning adaptive strategies.

【 授权许可】

CC BY