Low dose radiation and cancer in A-bomb survivors: latency and non-linear dose-response in the 1950–90 mortality cohort

Table 6 Two-phase and linear models fittted to subsets of the liver data^a

i	R_i ^b	p-y in S_i ^c	Cases^d	LRT^e	ERR₁ ^f
1	0 – 0.01552	1522195.93	441	22.00	1.67
2	0.015521 – 0.019389	1520822.41	459	18.94	1.28
3	0.19396 – 0.022682	1521452.84	499	27.01	1.49
4	0.022687 – 0.025616	1521872.88	500	30.31	1.57
5	0.025619 – 0.30046	1521932.58	510	28.61	1.42
6	0.030066 – 0.037161	1522215.36	494	26.14	1.37
7	0.037211 – 0.87187	1521303.24	483	26.31	1.50
8	0.87209 – 0.97152	1521034.77	492	30.44	1.36
9	0.97154 – 1.0107	1521559.95	507	28.56	1.74
10	1.0108 – 2.000	1519135.79	475	26.42	1.21

^aThe two-phase and linear models are fitted to subsets of the 0 – 20 mSv liver data with latency φ = 36.90 years (optimal for the two-phase model on the 0 – 20 mSv data, see Table 3)
^bR_i is the excluded dose range (in 10 mSv units). S_i consists of those cells in the 0 – 20 mSv subcohort whose weighted adjusted colon dose does not fall in R_i
^cPerson-years in S_i
^dCases (liver cancer deaths) in S_i
^eLRT = LRT_2p-lin for comparing the two-phase model with the linear model when fitted to S_i with latency φ = 36.90 years
^fERR₁ is the estimated Excess Relative Risk at 10 mSv when the two-phase model with latency φ = 36.90 years is fitted to S_i

ISSN: 1476-069X