Effect of Ambient Air SO_2 on Mortality of Respiratory Diseases in Shenyang / 环境与健康杂志

ABSTRACT

Objective To assess the effect of ambient air SO2 on mortality of respiratory diseases. Methods Based on the ecological theory, after the adjustment of seasons, temperature, humidity and air pressure, the observed individuals were divided into eight groups. The association between SO2 exposure and mortality rate of respiratory diseases was analyzed using Poisson regression and local auto-regression method. Results SO2 concentration increased by 0.05 mg/m3, the mortality of respiratory diseases increased by 5.90% (95%CI 2.26%-9.68%) in all groups, in children by 10.23% (95%CI 2.07%-19.04%), in young-middle-male group by 1.10% (95%CI -9.51%-12.96%), in young female group by 9.58% (95%CI -2.57%-23.23%), in young group by 10.23% (95%CI 2.07%-19.04%), in aged male group by 5.26%(95%CI 0.01%-10.78%), in aged female group by 8.07% (95%CI 3.45%-12.89%) and in aged group by 4.66% (95%CI 1.44%-7.99%) respectively. Conclusion SO2 exposure is found to be associated with the increase of mortality of respiratory diseases, especially in children, aged people and elderly females.