15. 委员会 2000 年报告中计算的癌症风险估计数是以日本原子弹爆炸幸存者数据为基础的，并且使用了 1980 年代中期产生的一套幸存者剂量估计方法，即所谓的 DS86 剂量测定法。有一段时间，人们认为，广岛原子弹爆炸幸存者的DS86 中子剂量估计数系统性统一偏低，而 DS86 伽马剂量估计数被认为更加可靠。近来对现有数据的分析表明，DS86 广岛中子剂量估计数并无大的系统误差。最新的一套剂量估计方法，即所谓的 DS02 剂量测定法，与 DS86 系统只有细微的差别，在数量上一般不超过 20%。使用新的剂量测定法进行的分析表明，癌症风险度的估计数可能会降低约 8%，但剂量反应图形和随年龄或时间升高的超高风险模式没有重大变化。
15. The cancer risk estimates calculated in the Committee’s 2000 report were based on data on Japanese atomic bombing survivors and used the set of survivor dose estimates produced in the mid-1980s, the so-called DS86 dosimetry. For some time, it was thought that the DS86 neutron dose estimates for the Hiroshima atomic bombing survivors were systematic underestimates, while the DS86 gamma dose estimates were thought to be more reliable. Recent analysis of the available data suggests that there are no appreciable systematic errors in the DS86 Hiroshima neutron dose estimates. The most current set of dose estimates, the so-called DS02 dosimetry, differs only slightly from the DS86 system, by amounts generally of no more than 20 per cent. Analyses using the new dosimetry indicate that estimates of cancer risk factors might fall by about 8 per cent as a result, but with no appreciable change in the shape of the dose response or in the patterns of excess risk with age or time.