Association between the detection rate of thyroid cancer and the external radiation dose-rate after the nuclear power plant accidents in Fukushima, Japan.

As the exposure quantification and the exposure distribution may influence epidemiological findings, [ 51 ] we took a closer look at the distribution of the dose-rates in Table 2 , with emphasis on possible outliers: the mean of the doses below 2 μSv/h is 0.54 (0.41, 0.67) whereas the remaining 6 doses above 2 μSv/h have a mean of 10.94 (5.05, 16.82), which is a highly significant contrast of more than one order of magnitude between those mean values.

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