Analysis of causes of death in 17 998 cases of pneumoconiosis patients
Objective To analyze the underlying causes of death in pneumoconiosis patients,providing a scientific basis for its prevention and treatment.Methods This analysis included 17 998 cases of occupational pneumoconiosis deaths diagnosed and reported in the occupational disease surveillance system from 2006 to 2020.Their information on death causes was accessible in the mortality monitoring system.Results The top five causes of death in pneumoconiosis patients were respiratory system diseases,malignant tumors,heart disease,cerebrovascular disease,and injuries.The respiratory system diseases were mainly pneumoconiosis and chronic obstructive pulmonary disease,and the primary cause of death due to malignant tumors was lung cancer.Respiratory diseases were the leading cause of death for patients with silicosis,coal worker's pneumoconiosis,foundry worker's pneumoconiosis,and asbestosis(all exceeding 40％),while malignant tumors accounted for the highest proportion of deaths(35.2％)among welder's pneumoconiosis patients,and cardiovascular and cerebrovascular diseases accounted for the highest proportion of deaths(33.9％)among cement pneumoconiosis patients.The proportion of deaths due to respiratory diseases in stage Ⅲ pneumoconiosis(67.3％)was higher than those in stage Ⅰ and Ⅱ pneumoconiosis,and the proportion of deaths due to respiratory diseases among stonemasons and explosive workers(both exceeding 50％)was higher than that among other occupations.Welders had a higher proportion of deaths due to lung cancer(26.4％)compared with other occupations.Among cases with 10 to＜20 years of exposure to dust,the proportion of deaths due to pneumoconiosis was the highest(33.2％).The differences in the causes of death among cases of different types of pneumoconiosis,stages,occupations,and years of exposure to dust were statistically significant(x2=89.368,1 535.995,212.490,118.593,P＜0.01).As the age at death increased,the proportion of deaths due to respiratory diseases decreased,while the proportions of deaths due to malignant tumors and cardiovascular and cerebrovascular diseases increased,and this trend was statistically significant(x2=11.406,P＜0.01).Conclusion Therefore,actively preventing and treating respiratory system complications in pneumoconiosis patients and focusing on preventing and treating chronic diseases(e.g.,cardiovascular and cerebrovascular diseases)and malignant tumors are expected to extend the lifespan of pneumoconiosis patients.
PneumoconiosisCause of deathUnderlying cause of death
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