Analysis Of Spatial Distribution Andinfluencing Factors Of Lung Cancer In Guangxi

Public health has always been a national priority.The health risks faced by China because of its large population are also huge.China’s rapid urbanization is also likely to exacerbate this shift.In the past 30years,China’s urban population has more than tripled,and the pace of urbanization has been accelerating.While urbanization can give people better access to health care and infrastructure,it can also lead to significant health risks,including ambient air pollution,occupational and traffic hazards,poor diet and lack of physical activity.These changes will be accompanied by related social and economic challenges.Lung cancer is the most common cancer and one of the main malignant tumors that endanger human health and life.In recent years,the morbidity and mortality of lung cancer have been widely concerned by various countries and regions in the world.The incidence and death rate of lung cancer in China ranks first in the world.The incidence of lung cancer in Guangxi Zhuang Autonomous region ranks third among malignant tumors in Guangxi,and the mortality rate ranks first among malignant tumors.Dealing with these new major risks to the health of Chinese residents,it is necessary to take multi-sectoral actions at the national,provincial and local levels to carefully record the health hazards at the local level.And formulate feasible policies to reduce the occurrence of these hazards.In this paper,the hospitalization data of lung cancer in Guangxi from January 1,2014 to December 31,2015 were studied,and the spatial distribution characteristics of lung cancer in Guangxi were analyzed by means of global spatial autocorrelation and local hot spot detection.The geographical detector was used to explore the effects of meteorological factors air temperature,precipitation,pollution factors PM_2.5,SO₄^2-,NO₃^-,NH₄⁺,OM,BC and socio-economic factors per capita GDP,secondary industrial output value and industrial output value on the spatial distribution of lung cancer and analyze their spatial differences.To explore the lagging effect of influencing factors on lung cancer by using classical linear regression model,spatial regression model and geographically weighted regression model.Finally,the etiology of lung cancer in Guangxi was analyzed and studied to provide a reference basis for the prevention and control of lung cancer.The main conclusions of this paper are as follows:（1）The prominent areas of lung cancer cases over 15 years old in Guangxi Zhuang Autonomous region were mainly concentrated in Liunan District and Urban District of Liuzhou City,Guiping City,Gangnan District and Tantang District of Guigang City,Beiliu City,Yuzhou District,Luchuan County and Xingye County of Yulin City.At the same time,these areas were also areas with relatively developed secondary and industrial industries.（2）As far as the analysis results of the data in this paper are concerned,the results of geographic probe show that NO₃^-,PM_2.5,NH₄⁺,OM,per capita GDP and precipitation had great influence on the hospitalization of lung cancer in people over 65 years old.Among them,PM_2.5,which lags 6 years behind,had the greatest contribution to the hospitalization rate of lung cancer in people over 65 years old in Guangxi Zhuang Autonomous region,followed by the NO₃^-,NH₄⁺13 years ago lagging 5-7 years.The lag period of OM was 6 years,the lag time of precipitation was 13 years,and there was no lag in per capita GDP,which was very significant in the same year.The interaction between factors was significantly higher than that of single factor.The Q value of interaction between precipitation and PM_2.5 was the highest in 2002,and the year 2008 was the most significant.The interaction between precipitation and SO₄^2-,NH₄⁺and OM was very high.（3）The results of comparative analysis of the model show that pollution factors play a leading role in the hospitalization rate of lung cancer over 65 years old in Guangxi Zhuang Autonomous region,and PM_2.5was one of the factors that may induce lung cancer in Guangxi Zhuang Autonomous region.The hospitalization rate was relatively high in the areas with more developed social economy,such as the secondary industry and the areas with more developed industry.Meteorological factors had a synergistic effect on the hospitalization rate of lung cancer in Guangxi Zhuang Autonomous region.