20. 通过分析零散或长期接受低度线性能量传递辐射的低剂量照射所得出的新结论也已公布，特别是以下研究：关于 15 个国家核工作者的一项研究；关于生活在俄罗斯联邦 Techa 河附近、由于 Mayak 厂的放射性泄漏而受到辐射的人群的各项研究；关于受哈萨克斯坦 Semipalatinsk 核试验基地的放射性坠尘辐射的人群的一项研究；以及在天然本底辐射剂量高的地区进行的各项研究。总的来说，这些研究得出的癌症风险在统计学上与根据有关日本原子弹爆炸幸存者的数据所得出的癌症风险相一致，虽然有些研究中的癌症风险更高一些。不过，人们对所有这些研究中所存在的偏差表示关切，这些偏差可以说明为什么这些研究得出的癌症风险估计数比日本数据要高。
20. New findings have also been published from analyses of fractionated or chronic low-dose exposure to low-LET radiation; in particular, a study of nuclear workers in 15 countries, studies of persons living in the vicinity of the Techa River in the Russian Federation who were exposed as a consequence of radioactive discharges from the Mayak plant, a study of persons exposed to fallout from the Semipalatinsk nuclear test site in Kazakhstan, and studies in regions with high natural background levels of radiation. Cancer risks are generally statistically compatible with, although in some studies they are somewhat higher than, those derived from the data on Japanese atomic bombing survivors. However, there are concerns about bias in all of these studies, which may explain why the cancer risk estimates are elevated in comparison with those derived from the Japanese data.