The effects of dust-haze on mortality are modified by seasons and individual characteristics in Guangzhou, China.
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.
['Liu|Tao|T|', 'Zhang|Yong Hui|YH|', 'Xu|Yan Jun|YJ|', 'Lin|Hua Liang|HL|', 'Xu|Xiao Jun|XJ|', 'Luo|Yuan|Y|', 'Xiao|Jianpeng|J|', 'Zeng|Wei Lin|WL|', 'Zhang|Wan Fang|WF|', 'Chu|Cordia|C|', 'Keogh|Kandice|K|', 'Rutherford|Shannon|S|', 'Qian|Zhengmin|Z|', 'Du|Yao Dong|YD|', 'Hu|Mengjue|M|', 'Ma|Wen Jun|WJ|']
D000393:Air Pollutants D000397:Air Pollution D002318:Cardiovascular Diseases D002561:Cerebrovascular Disorders D002681:China D004391:Dust D004781:Environmental Exposure D005260:Female D006801:Humans D016014:Linear Models D008297:Male D012140:Respiratory Tract Diseases D012621:Seasons
Mortality Season Dust–haze Excess risk Lag effect