But Anna, Kurttio Päivi, Heinävaara Sirpa, Auvinen Anssi
Research and Environmental Surveillance, STUK--Radiation and Nuclear Safety Authority, P.O. Box 14, FIN-00881 Helsinki, Finland.
Eur J Cancer. 2006 May;42(8):1167-71. doi: 10.1016/j.ejca.2006.03.006. Epub 2006 Apr 24.
The aim of the study was to assess whether radioactive fallout from the Chernobyl accident in 1986 influenced thyroid cancer incidence among children and adolescents in Finland. The population was divided into two: those with thyroid doses less than 0 6 mSv and above 0.6 mSv. Cumulative incidence of thyroid cancer was identified from the Finnish Cancer Registry from a population aged 0-20 years in 1986 with a total of 1,356,801 persons. No clear difference in underlying thyroid cancer incidences rates were found during the pre-Chernobyl period (1970-1985) (rate ratio RR 0.95, 95% confidence interval CI 0.81-1.10). During the post-Chernobyl period (1991-2003), thyroid cancer incidence was lower in the more exposed population than in the less exposed population (RR 0.76, 95% CI 0.59-0.98). Our results did not indicate any increase in thyroid cancer incidence related to exposure to radiation from the Chernobyl accident.
该研究的目的是评估1986年切尔诺贝利事故产生的放射性沉降物是否影响了芬兰儿童和青少年的甲状腺癌发病率。研究人群分为两组：甲状腺剂量低于0.6毫希沃特和高于0.6毫希沃特的人群。从芬兰癌症登记处确定了1986年年龄在0至20岁、总计1356801人的人群中甲状腺癌的累积发病率。在切尔诺贝利事故之前的时期（1970 - 1985年），未发现潜在甲状腺癌发病率有明显差异（率比RR为0.95，95%置信区间CI为0.81 - 1.10）。在切尔诺贝利事故之后的时期（1991 - 2003年），暴露程度较高人群的甲状腺癌发病率低于暴露程度较低人群（RR为0.76，95%置信区间CI为0.59 - 0.98）。我们的研究结果并未表明与切尔诺贝利事故辐射暴露相关的甲状腺癌发病率有任何增加。
