Objective To analyze the characteristics of progressed cases with pneumoconiosis in Sichuan Province,and to provide reference for formulating prevention and control strategy of pneumoconiosis.Methods Progressed cases of pneumoconiosis in Sichuan Province from 2006 to 2022 were selected as the research objects.SPSS 26.0 software was used to statistically analyze the distribution characteristics of the cases,as well as factors such as the duration of progressed stage and the dust-exposed working years.Rank-sum test was used for the comparison of quantitative data,and Chi-square test was used for the comparison of composition ratio of count data.And the test level was α=0.05.Results There were 2 171 progressed cases of pneumoconiosis reported in Sichuan Province from 2006 to 2022(2 245 cases),including 2 167 males(99.82％)and 4 females(0.18％).The main types of pneumoconiosis were coal workers'pneumoconiosis(1 253 cases,57.72％)and silicosis(894 cases,41.18％).The main industry categories were coal mining and washing industry(1 552 cases,71.49％),followed by civil engineering construction industry(73 cases,3.36％)and mining and its auxiliary activities(50 cases,2.30％).The average dust-exposed duration was 18(9.54,26.00)years while the average time of progression was 4.45(2.23,8.10)years.The duration of the first stage promoting to the second stage was the shortest,3.61(1.96,6.64)years.The dust-exposed duration of the first stage promoting to the third stage was the longest,20.50(11.63,27.56)years.Most progressed cases were born in the 1 960 s,and those started dust exposure in the 1 970 s had the highest number of promotion to the third stage.Conclusions The dust hazards in traditional mining and construction industries were serious in Sichuan Province.Pneumoconiosis patients born in the 1 960 s and starting dust exposure in the 1 970 s had a higher risk of severe disease progression.Therefore,efforts should be made to strengthen source control and rehabilitation of pneumoconiosis patients.
pneumoconiosisprogressed casesdust-exposed working years
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