The trend of children’s respiratory health and air pollution in a typical northern city over two decades

Abstract

TPS 684: Long-term health effects of air pollutants 1, Exhibition Hall, Ground floor, August 26, 2019, 3:00 PM - 4:30 PM With rapid urbanization and industrialization, environmental situation and people`s life style in china are changing rapidly. To test whether the association between air pollution and children`s respiratory health may change in 20 years, the research team use the similar study protocols to collect data in the current cohort and compared the results with the original cohort. Both two studies were conducted in a typical Northern city in Chinese Lanzhou City. We found the fine particular matter and SO2 level decreased 56% and 90% in urban, 23% and 56% in suburban in comparison with those of 20 years ago. We also found the NO2 level in suburban increased 20% and O3 level in urban increased 35% when compared to 20 years ago. The prevalence of asthma and bronchitis among children significantly reduced than before (Prevalence Ratio <1, P <0.05), but the prevalence rates of tuberculosis increased with multiple stratification (Prevalence Ratio > 1). The prevalence of asthma and bronchitis in urban areas is still higher than suburbs, even though current urban air quality is better than the suburbs. The odds ratios in urban to suburban were narrowed than 20 years ago. We fitted the linear prediction curves of prevalence of respiratory diseases for different pollutants and found different pollutants have different correlation to the disease prevalence rate.