Qiang Zeng1, Guoxing Li, Liang Zhao, Guohong Jiang, Xiaochuan Pan. 1. Department of Occupational and Environmental Health (Dr Zeng, Dr Li, and Mr Pan), School of Public Health, Peking University, Beijing and Tianjin Centers for Disease Control and Prevention (Dr Zeng, Mr Zhao, and Ms Jiang), China.
Abstract
OBJECTIVES: To explore the characteristics of the exposure-response relationship of particulate matter concentration and mortality on the multicity scale in China. METHODS: Generalized additive models were used to explore the short-term effects of particulate matter with an aerodynamic diameter of less than 10 μm (PM10) on mortality while adjusting for confounding variables, including seasonal periodicity, air temperature, relative humidity, day-of-the-week effect, and holiday effect. Additionally, possible PM10 thresholds for daily mortality were evaluated. RESULTS: In most cities, the relationships of PM10 concentration and daily cause-specific mortalities were all nearly linear when PM10 concentration was below 150 μg/m3. The estimated PM10 thresholds associated with nonaccidental and cardiovascular mortalities were 80 μg/m3 and 45 μg/m3, respectively. CONCLUSIONS: Our findings indicated that, at least in China, the PM10 pollutant has threshold effects.
OBJECTIVES: To explore the characteristics of the exposure-response relationship of particulate matter concentration and mortality on the multicity scale in China. METHODS: Generalized additive models were used to explore the short-term effects of particulate matter with an aerodynamic diameter of less than 10 μm (PM10) on mortality while adjusting for confounding variables, including seasonal periodicity, air temperature, relative humidity, day-of-the-week effect, and holiday effect. Additionally, possible PM10 thresholds for daily mortality were evaluated. RESULTS: In most cities, the relationships of PM10 concentration and daily cause-specific mortalities were all nearly linear when PM10 concentration was below 150 μg/m3. The estimated PM10 thresholds associated with nonaccidental and cardiovascular mortalities were 80 μg/m3 and 45 μg/m3, respectively. CONCLUSIONS: Our findings indicated that, at least in China, the PM10 pollutant has threshold effects.
Authors: Wenjie Shan; Yanming Lu; Yinshi Guo; Yaqin Li; Lingyun Xu; Lanfang Cao Journal: Environ Sci Pollut Res Int Date: 2016-06-28 Impact factor: 4.223
Authors: Kai Luo; Wenjing Li; Ruiming Zhang; Runkui Li; Qun Xu; Yang Cao Journal: Int J Environ Res Public Health Date: 2016-11-04 Impact factor: 3.390