大亚湾核电站周围居民恶性肿瘤死亡分析(1993～1997年)

目的调查广东大亚湾核电站运行初期周围居民恶性肿瘤死亡资料,为核电正常运行或核电事故健康影响评价提供基础资料.方法通过回顾性调查方法,将核电站20km半径范围内1993年以前至少居住3年以上(含3年)并有常住户口的居民列为调查对象.恶性肿瘤死亡资料收集分人口学调查和死因确认两步骤.结果1993～1997年调查总人数116328人,累积观察587114人年,期间死亡3027人,恶性肿瘤死亡520例,调整死亡率为79.77×10-5,白血病死亡19例,调整死亡率为2.94×10-5.恶性肿瘤顺位前10位分别为肝癌、肺癌、胃癌、鼻咽癌、食道癌、白血病、肠癌、喉癌、骨癌及脑癌.结论调查地区恶性肿瘤死亡率和白血病死亡率与广东省其他地区或全国调查结果基本一致.

Analysis on the cancer mortality (1993-1997) in ambient residents of Daya Bay Nuclear Power Plant

Objective To survey the data of cancer mortality in the ambient residents of Daya Bay Nuclear Power Plant, and provide the background data to evaluate carcinoma incidence affected by fallout of nuclear power plant. Methods The data of cancer mortality in the period of 1993-1997 were collected by a retrospective survey. The investigated area was within 20 km of radius from Daya Bay Nuclear Power Plant, and the subjects who had lived there for three or more than three years before January 1, 1993 and covered by the Household Registry were recruited to a cohort. The mortality investigation on the spot consisted of two steps, the collection of demographic data and the ascertainment of the death causes. Results During the period of 1993-1997, there was 3 027 total deaths and 520 cancer deaths among 587 114 PYr at risk in the cohort of 116 328 subjects. The standard mortality rate of overall cancer (per 100 000 PYr ) was 79.77. 19 cases were died of leukemia, and its standard mortality rate (per 100 000 PYr ) was 2.94. The order of first ten site-specific cancer deaths was cancers of liver, lung, stomach, nasopharynx, esophagus, leukemia, colon, larynx, bone and brains. Conclusion The mortality of all cancers or leukemia was similar to the result from other areas of Guangdong province or nation-wide of China.