ABSTRACT
Objective To evaluate the distribution of Pneumoconiosis and provide scientific basis for preventing the occur-rence of Pneumoconiosis and improving the life quality of patients for the workers in coal mine of Songzao.Methods Retrospective epidemiological research and chi-square test were used for all collected Pneumoconiosis cases in Songzao coal mine of Chongqing from 2010 to 2012.Results From 2010 to 2012,the incidence was significantly different(χ2 =25.048,P <0.05),and the prevalence was significantly different(χ2 = 11.223,P <0.05).Besides,the mean duration of dust exposure was(20.50± 5.45)years.Mean-while,the difference of proportion between stageⅠand stageⅡ、stage Ⅲ show statistical significance(χ2 =9.162,P <0.05).What′s more,the rate of complicated pulmonary tuberculosis with pneumoconiosis was 2.94%.From 1979 to 2012,the difference in propor-tion of different stage′s fatality was significantly different(χ2 = 174.101,P <0.05).Conclusion Nearly three years,although the incidence and prevalence were all decreasing,but the situation was not optimistic.Pneumoconiosis are mainly in stageⅠ,and the le-thality of Ⅲ period is far stronger than the other two.Prevention of complication should be paid high attention.