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本文研究的目的是尘肺和接尘本身对肺癌进展的关系。为此作者在一家金属矿进行了接尘工人的定群死亡率研究。该矿是以硫化铜为主的硫化矿。调查对象为1967～1988年期间在册的370名男性矿工,其中246名为接尘工人,124名为未接尘工人。死者以死亡诊断书为准,死因根据日本国内死因标准确定。该矿的游离二氧化硅浓度为10％左右。观察期间的标准人口以厚生省每年的人口动态统计中所记载的日本男性公民的死因别死亡状态为基准。SMR的计算为观察值/预期值×100。显著
The purpose of this study is the relationship between pneumoconiosis and dust accumulation itself on the progression of lung cancer. To this end, the author conducted a study on the fixed-group mortality of workers exposed to dust in a metal mine. The mine is copper sulphide-based sulfide ore. The survey was conducted for 370 male miners enrolled between 1967 and 1988, of whom 246 were dust-sweeping workers and 124 were unskilled workers. The deceased’s death certificate shall prevail, according to the cause of death in Japan to determine the standard. The mine’s free silica concentration of about 10%. The standard population during the observation period is based on the death causes of Japanese male citizens recorded in the annual vital statistics of the Ministry of Health and Welfare. The SMR is calculated as the observed value / expected value × 100. Significant