Kitabatake T, Watanabe T, Saito A, Nakamura M
Strahlentherapie. 1976 Aug;152(2):187-90.
Among the Japanese radiological technicans, four deaths from aplastic anemia have been reported after 1930. On the other hand, during the period from 1930 to 1960, the population of radiological technicians is estimated to be 74,400 man-years, in which 0.5 aplastic anemias are expected. However, actually three died from aplastic anemia. This difference is statistically significant at the 1% level. While, in the period from 1961 to 1973, the observed value is 1 against 0.7 expected. It is concluded that aplastic anemia had been induced frequently among the Japanese radiological technicians in the era when there was much exposure to occupational radiation.
1930年后，日本放射技师中有4例死于再生障碍性贫血。另一方面，在1930年至1960年期间，放射技师的总人年数估计为74400人年，预计再生障碍性贫血病例数为0.5例。然而，实际上有3人死于再生障碍性贫血。这种差异在1%的水平上具有统计学意义。而在1961年至1973年期间，观察值为1例，预期值为0.7例。可以得出结论，在职业辐射暴露较多的时代，日本放射技师中再生障碍性贫血的诱发较为频繁。
