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The joint and interaction effect of high temperature and humidity on mortality in China.
Fang, Wen; Li, Zhixing; Gao, Jinghua; Meng, Ruilin; He, Guanhao; Hou, Zhulin; Zhu, Sui; Zhou, Maigeng; Zhou, Chunliang; Xiao, Yize; Yu, Min; Huang, Biao; Xu, Xiaojun; Lin, Lifeng; Xiao, Jianpeng; Jin, Donghui; Qin, Mingfang; Yin, Peng; Xu, Yiqing; Hu, Jianxiong; Liu, Tao; Huang, Cunrui; Ma, Wenjun.
Afiliação
  • Fang W; Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou 510632, China.
  • Li Z; Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou 510632, China.
  • Gao J; School of Public Health, Southern Medical University, Guangzhou 510515, China.
  • Meng R; Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
  • He G; Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou 510632, China.
  • Hou Z; Jilin Provincial Center for Disease Control and Prevention, Changchun 130062, China.
  • Zhu S; Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou 510632, China.
  • Zhou M; The National Center for Chronic and Noncommunicable Disease Control and Prevention, Beijing 100050, China.
  • Zhou C; Hunan Provincial Center for Disease Control and Prevention, Changsha 410005, China.
  • Xiao Y; Yunnan Provincial Center for Disease Control and Prevention, Kunming 650034, China.
  • Yu M; Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310009, China.
  • Huang B; Jilin Provincial Center for Disease Control and Prevention, Changchun 130062, China.
  • Xu X; Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
  • Lin L; Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
  • Xiao J; Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
  • Jin D; Hunan Provincial Center for Disease Control and Prevention, Changsha 410005, China.
  • Qin M; Yunnan Provincial Center for Disease Control and Prevention, Kunming 650034, China.
  • Yin P; The National Center for Chronic and Noncommunicable Disease Control and Prevention, Beijing 100050, China.
  • Xu Y; Hunan Provincial Center for Disease Control and Prevention, Changsha 410005, China.
  • Hu J; Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China.
  • Liu T; Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou 510632, China.
  • Huang C; Vanke School of Public Health, Tsinghua University, Beijing 100084, China.
  • Ma W; Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou 510632, China. Electronic address: mawj@gdiph.org.cn.
Environ Int ; 171: 107669, 2023 01.
Article em En | MEDLINE | ID: mdl-36508749
ABSTRACT

BACKGROUND:

Although many studies have reported the mortality effect of temperature, there were few studies on the mortality risk of humidity, let alone the joint effect of temperature and humidity. This study aimed to investigate the joint and interaction effect of high temperature and relative humidity on mortality in China, which will deepen understanding the health risk of mixture climate exposure.

METHODS:

The mortality and meteorological data were collected from 353 locations in China (2013-2017 in Jilin, Hunan, Guangdong and Yunnan provinces, 2009-2017 in Zhejiang province, and 2006-2011 in other Provinces). We defined location-specific daily mean temperature ≥ 75th percentile of distribution as high temperature, while minimum mortality relative humidity as the threshold of high relative humidity. A time-series model with a distributed lag non-linear model was first employed to estimate the location-specific associations between humid-hot events and mortality, then we conducted meta-analysis to pool the mortality effect of humid-hot events. Finally, an additive interaction model was used to examine the interactive effect between high temperature and relative humidity.

RESULTS:

The excess rate (ER) of non-accidental mortality attributed to dry-hot events was 10.18% (95% confidence interval (CI) 8.93%, 11.45%), which was higher than that of wet-hot events (ER = 3.21%, 95% CI 0.59%, 5.89%). The attributable fraction (AF) of mortality attributed to dry-hot events was 10.00% (95% CI 9.50%, 10.72%) with higher burden for females, older people, central China, cardiovascular diseases and urban city. While for wet-hot events, AF was much lower (3.31%, 95% CI 2.60%, 4.30%). We also found that high temperature and low relative humidity had synergistic additive interaction on mortality risk.

CONCLUSION:

Dry-hot events may have a higher risk of mortality than wet-hot events, and the joint effect of high temperature and low relative humidity may be greater than the sum of their individual effects.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Mortalidade / Clima / Temperatura Alta Tipo de estudo: Systematic_reviews Limite: Humans País/Região como assunto: Asia Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Mortalidade / Clima / Temperatura Alta Tipo de estudo: Systematic_reviews Limite: Humans País/Região como assunto: Asia Idioma: En Ano de publicação: 2023 Tipo de documento: Article