Associations Between Air Pollutant And Daily Hospitalization Of Children’s Respiratory Disease In Hohhot City

The relationship between air pollution and human health has been gradually confirmed,and respiratory diseases have become one of the important factors which would harm physical and mental health of children.Hohhot is a representative city in the arid and semi-arid regions of the north,and there are few reports on this aspect in this area.The time series method was combined with the semi-parametric generalized additive model（GAM）to explore the relationship between air pollution and human health in Hohhot.The relationship between the main air pollutants of 6 species including particulate Matter≤2.5μm in diameter(PM_2.5),particulate Matter≤10μm in diameter(PM₁₀),sulfur dioxide（SO₂）,nitrogen dioxide（NO₂）,ozone（O₃）and carbon monoxide（CO）in Hohhot and the admission of respiratory diseases in children,and the differences health effects by air pollution among different ages,genders and diseases are analyzed.This paper aims to provide reference for the study of children’s respiratory diseases.The following main conclusions are drawn:1.Statistical analysis showed that children admitted to hospital due to respiratory diseases in 2013-2017 showed an upward trend,and the heating period was significantly higher than the non-heating period;the age and disease sequence of the admitted children were:0-4>5-9>10-14 years old,pneumonia>bronchitis>asthma.2.The simulation showed that NO₂,PM_2.5 significantly increased the total admission risk of respiratory diseases in children during the strongest response period（P<0.01）.The risk of admission in boys with PM₁₀,PM_2.5 was slightly higher than that in girls,and the effect of NO₂ on admission risk was higher in girls than in boys（P<0.05）,and the effects of SO₂ and PM₁₀0 were significantly increased with age（P<0.05）.The risk of boys of 5-9 years with CO was significant（P<0.01）.3.The simulation showed that in the strongest response period,PM₁₀,SO₂,CO（P<0.05）,PM_2.5.5 and NO₂（P<0.01）had significant effects on children’s pneumonia,as well as PM_2.5,SO₂（P<0.05）and NO₂（P<0.01）on children’s bronchitis.NO₂posed the greatest risk of hospitalization for children with bronchitis.CO was significantly associated with childhood asthma admission（P<0.05）.