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目的 探讨游离二氧化硅累积接触与尘肺累积发病的剂量 反应关系。方法 根据以往发表的文献及近年的科研成果资料 ,对游离二氧化硅累积接触量与尘肺累积发病率进行相关分析。结果 以二氧化硅累积接触量 (mg .a)为X轴 ,尘肺累积发病率 ( % )为Y轴作曲线 ,求得相关回归方程为y =1 3 6x +4 2 5 (r =0 85 3 ,P <0 0 0 1)。结论 尘肺累积发病率与游离二氧化硅累积接触量密切相关。
Objective To investigate the dose-response relationship between cumulative exposure to free silica and the cumulative incidence of pneumoconiosis. Methods Based on the published literature and the data of scientific research in recent years, the cumulative exposure of free silica and the cumulative incidence of pneumoconiosis were analyzed. Results The cumulative incidence of pneumoconiosis (%) was plotted on the Y axis with the accumulated exposure to silica (mg. A) as the X axis and the correlation equation y = 1 3 6x +4 2 5 (r = 0 85 3, P <0 0 0 1). Conclusion The cumulative incidence of pneumoconiosis is closely related to the cumulative exposure of free silica.