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- Talibov, Madar, et al.
(author)
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Estimation of occupational cosmic radiation exposure among airline personnel : Agreement between a job-exposure matrix, aggregate, and individual dose estimates
- 2017
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In: American Journal of Industrial Medicine. - : WILEY. - 0271-3586 .- 1097-0274. ; 60:4, s. 386-393
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Journal article (peer-reviewed)abstract
- BackgroundJob-exposure matrices (JEM) are used for exposure assessment in occupational studies, but they can involve errors. We assessed agreement between the Nordic Occupational Cancer Studies JEM (NOCCA-JEM) and aggregate and individual dose estimates for cosmic radiation exposure among Finnish airline personnel. MethodsCumulative cosmic radiation exposure for 5,022 airline crew members was compared between a JEM and aggregate and individual dose estimates. ResultsThe NOCCA-JEM underestimated individual doses. Intraclass correlation coefficient was 0.37, proportion of agreement 64%, kappa 0.46 compared with individual doses. Higher agreement was achieved with aggregate dose estimates, that is annual medians of individual doses and estimates adjusted for heliocentric potentials. ConclusionsThe substantial disagreement between NOCCA-JEM and individual dose estimates of cosmic radiation may lead to exposure misclassification and biased risk estimates in epidemiological studies. Using aggregate data may provide improved estimates. Am. J. Ind. Med. 60:386-393, 2017.
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