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应用ICD－9死因分类原则和流行病学调查方法，在核工业11个代表性单位进行了全因死亡调查。结果表明：死亡有逐年增高趋势（P＜0．01），并随年龄增长而增加（P＜0．05）；而平均死亡年龄、工龄均有逐年增高趋势（P＜0．05）．肿瘤死亡表现为逐年增高（P＜0．01），其中肺癌死亡在70年代中期开始增加，1985～1990年增加明显（P＜0．05）；肝癌、胃癌1975年后是增加趋势，但差异无显著性．循环系统疾病死亡自70年代逐年增加（P＜0．01），消化系统变化趋势不显著（P＞0．05），呼吸系统因矽肺死亡在60年代呈现一高峰，后下降至平缓.
The ICD-9 cause of death principle and epidemiological survey method were used to investigate all-cause death in 11 representative units in the nuclear industry. The results showed that the death rate increased year by year (P <0.01), and increased with age (P <0.05). However, the mean age of death and length of service increased year by year (P <0.05). The death of tumor increased year by year (P <0.01). The death of lung cancer began to increase in the mid-1970s and increased significantly from 1985 to 1990 (P <0.05). The incidence of liver cancer and gastric cancer increased after 1975, but the difference No significant. Death from circulatory diseases increased year by year from the 1970s (P <0.01), but the digestive system did not change significantly (P> 0.05). Respiratory death due to silicosis peaked in the 1960s and then decreased to flat.