Impact of Uncertainties in Exposure Assessment on Thyroid Cancer Risk among Persons in Belarus Exposed as Children or Adolescents Due to the Chernobyl Accident

Mark P Little, Deukwoo Kwon, Lydia B Zablotska, Alina V Brenner, Elizabeth K Cahoon, Alexander V Rozhko, Olga N Polyanskaya, Victor F Minenko, Ivan Golovanov, André Bouville and Vladimir Drozdovitch

PLOS ONE, 2015, vol. 10, issue 10, 1-16

Abstract: Background: The excess incidence of thyroid cancer in Ukraine and Belarus observed a few years after the Chernobyl accident is considered to be largely the result of 131I released from the reactor. Although the Belarus thyroid cancer prevalence data has been previously analyzed, no account was taken of dose measurement error. Methods: We examined dose-response patterns in a thyroid screening prevalence cohort of 11,732 persons aged under 18 at the time of the accident, diagnosed during 1996–2004, who had direct thyroid 131I activity measurement, and were resident in the most radio-actively contaminated regions of Belarus. Three methods of dose-error correction (regression calibration, Monte Carlo maximum likelihood, Bayesian Markov Chain Monte Carlo) were applied. Results: There was a statistically significant (p 0.2). Conclusions: In summary, the relatively small contribution of unshared classical dose error in the current study results in comparatively modest effects on the regression parameters.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0139826

DOI: 10.1371/journal.pone.0139826

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