Schematic diagram giving the definitions of Lifetime Baseline Risk (LBR) and Lifetime Attributable Risk (LAR) of cancer. Requirements for calculating these two quantities, for the all solid cancer grouping and Swiss females, are shown in a simplified schematic representation at the top of the diagram. The requirements, from left to right, are: age specific cancer incidence rates for 2010–2014 in Switzerland (bfs.ch); Swiss survival curves for 2016 (calculated with data from www.who.org); and radiation dose response curves for the excess relative risk as a function of colon dose (Gy) from the most recent analysis of cancer incidence in the life span study (LSS) of Hiroshima and Nagasaki A-bomb survivors (with risk parameters taken from Table 5 of Grant et al., 2017).