Study on the effects of airborne particulate contaminants on prevalence and lung function of primary school students in Changzhou city

Objective To understand the impact of air pollution on the sickness status and pulmonary function of primary school students,and to provide a reference for taking effective measures to control diseases and improve their pulmonary function.Methods A total of 634 primary students of grade 3 to 5 were selected by cluster random sampling method from a primary school in Wujin District of Changzhou.Questionnaires and pulmonary function tests were performed on the selected subjects.Combined with the results of environmental monitoring,we analyzed the influence of haze weather on the health of primary school students.Results Haze day,a total of 99 people suffering from related diseases,including respiratary diseases mainly(63 people,accounting for 63.6%) and PM2.5,PM10,CO and the number of patients in primary school studentswere more correlated.FVC,FEV1,PEF,V75 (1.68±0.44,1.60±0.40,2.86± 1.10,2.66± 1.11) were significantly lower in hazy day than those of non-haze day (1.48±0.49,1.40±0.42,2.26± 1.01,1.99± 1.(4),the differences were of statistical significance(P<0.01).Conclusion Air pollution is associated with the increase of the number of patients and the decrease of lung function.Effective measures should be taken to improve air quality.