期刊
RADIATION AND ENVIRONMENTAL BIOPHYSICS
卷 47, 期 4, 页码 463-467出版社
SPRINGER
DOI: 10.1007/s00411-008-0177-9
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The presented paper deals with the thyroid cancer incidence in selected cohorts of emergency workers of Russia. In 1986-2003, a total of 87 cases of thyroid cancer were observed. Based on these data, a statistically significant increase in thyroid cancer incidence was found above the reference level for the male population of Russia, corresponding to a standardized incidence rate (SIR) of SIR = 3.47 [95% confidence interval (CI): 2.80; 4.25]. The highest incidence rate (SIR = 6.62, 95% CI: 4.63; 9.09) was shown for those emergency workers who took part in the early recovery operations in April-July 1986. The estimated SIR value increases to 7.97 (95% CI: 5.24; 11.52) after allowing for a 10 years latent period of Chernobyl-related thyroid cancers. These results indicate that the exposure to incorporated I-131 was the major risk factor of thyroid cancer among Chernobyl emergency workers. No statistically significant relationship was found for the thyroid cancer incidence and external radiation dose.
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