Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12940-020-00651-5/MediaObjects/12940_2020_651_Fig1_HTML.png)
Unrestricted linear regression analysis between dose rates and odds ratios in 47 prefectures in Japan shown in the report [1]. Red line showed regression line with 95% confidence intervals (dotted lines). R2 = 0.108 and p = 0.0239 for slope factor