The Effect Of Ambient Air Pollution On The Risk Of Death In Shenzhen

Objective:The aim of the study was to analyze the impact of ambient air pollution on the death risk of residents in Shenzhen by using ambient air pollution,meteorology and death data from 2013 to 2017,in order to provide a scientific basis for the epidemiological study of ambient air pollution and the formulation of corresponding prevention and control strategies in Shenzhen.Methods:This study collected 56,034 non-accidental deaths in Shenzhen from2013 to 2017,including 4,198 deaths from respiratory diseases and 23030 deaths from cardiovascular diseases.This study described the general situation of ambient air pollution,meteorology and death in Shenzhen from 2013-2017,and analyzed the correlation between ambient air pollution and meteorology.We used the quasi-poisson regression model combined with the generalized additive model to analyze the effects of ambient air pollution on non-accidental death,respiratory disease death and cardiovascular disease death.Results:1.The daily average number of non-accidental deaths was 30.72,the daily average number of deaths from respiratory diseases was 2.30,and the daily average number of deaths from cardiovascular diseases was 12.63 in Shenzhen from2013 to 2017.2.The daily average concentration of PM_2.5 was 32.00μg/m³,the daily average concentration of PM₁₀ was 50.80μg/m³,the daily average concentration of NO₂ was39.70μg/m³,and the daily average concentration of SO₂ was 9.50μg/m³.The daily average temperature was 23.50°C and the daily average relative humidity was 75.20%.3.The effect of PM_2.5 on non-accidental death,death from respiratory diseases and death from cardiovascular diseases was statistically significant.When the multi-day cumulative lag effect was greatest,for every 10μg/m³ increase in PM_2.5concentration,the risk of death increased 1.00%（95%CI:0.18%,1.83%）,3.83%（95%CI:0.75%,7.00%）,1.50%（95%CI:0.26%,2.75%）,respectively.4.The effect of PM₁₀ on non-accidental death,death from respiratory diseases and death from cardiovascular diseases was statistically significant.When the multi-day cumulative lag effect was greatest,for every 10μg/m³ increase in PM₁₀concentration,the risk of death increased 0.95%（95%CI:0.37%,1.53%）,2.82%（95%CI:0.70%,5.00%）,1.49%（95%CI:0.62%,2.37%）,respectively.5.The effect of NO₂ on non-accidental death,death from respiratory diseases and death from cardiovascular diseases was statistically significant.When the multi-day cumulative lag effect was greatest,for every 10μg/m³ increase in NO₂ concentration,the risk of death increased 2.49%（95%CI:1.47%,3.51%）、4.99%（95%CI:1.47%,8.63%）、2.97%（95%CI:1.56%,4.39%）,respectively.6.The effect of SO₂ on non-accidental death was statistically significant.When the multi-day cumulative lag effect was greatest,for every 10μg/m³ increase in SO₂concentration,the risk of death increased 4.60%（95%:0.58%,8.79%）.7.After adjusting for the effects of another air pollution,the effects of PM10 and NO2 on the risk of death were table.The effect of PM2.5 on the risk of death from respiratory diseases was still statistically significant.However,the effect of SO2 on the risk of death was not statistically significant.8.The effects of PM_2.5,PM₁₀,and NO₂ on non-accidental death and death from cardiovascular diseases were stronger in men,and the effects on death from respiratory diseases were stronger in women.The effects on non-accidental death were stronger in the elderly,and the effects on death from respiratory diseases and death from cardiovascular diseases were present in different age groups.9.Seasonal differences in the effects of atmospheric pollutants on mortality risk.PM_2.5,PM₁₀,and NO₂ had stronger effects on death risk during the cold season.Conclusion:The air pollution level of Shenzhen was light in 2013-2017.The main air pollution affecting Shenzhen air quality were PM_2.5,PM₁₀ and NO₂.PM_2.5might be an independent risk factor for death from respiratory diseases,PM₁₀ and NO₂had a relatively stable health hazard effect,while the effect of SO₂ health effect was not obvious.Gender,age and season had impacts on the relationship between ambient air pollution and the risk of death.The results provided a scientific basis for the management of air pollution and formulation of disease prevention and control strategies..