The effects of dust-haze on mortality are modified by seasons and individual characteristics in Guangzhou, China

Tao Liu, Yong Hui Zhang, Yan Jun Xu, Hua Liang Lin, Xiao Jun Xu, Yuan Luo, Jianpeng Xiao, Wei Lin Zeng, Wan Fang Zhang, Cordia Chu, Kandice Keogh, Shannon Rutherford, Zhengmin Qian, Yao Dong Du, Mengjue Hu, Wen Jun Ma

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

This study aimed to investigate the effects of dust-haze on mortality and to estimate the seasonal and individual-specific modification effects in Guangzhou, China. Mortality, air pollution and meteorological data were collected for 2006-2011. A dust-haze day was defined as daily visibility <10 km with relative humidity <90%. This definition was further divided into light (8-10 km), medium (5-8 km) and heavy dust-haze (<5 km). A distributed lag linear model (DLM) was employed. Light, medium and heavy dust-haze days were associated with increased mortality of 3.4%, 6.8% and 10.4% respectively, at a lag of 0-6 days. This effect was more pronounced during the cold season, for cardiovascular mortality (CVD), respiratory mortality (RESP), in males and people ≥60years. These effects became insignificant after adjustment for PM10. We concluded that dust-haze significantly increased mortality risk in Guangzhou, China, and this effect appears to be dominated by particulate mass and modified by season and individual-specific factors.

Original languageEnglish (US)
Pages (from-to)116-123
Number of pages8
JournalEnvironmental Pollution
Volume187
DOIs
StatePublished - Apr 1 2014

All Science Journal Classification (ASJC) codes

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

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