Table 4. Comparison of estimates of the gender-averaged ERR/Gy (90% CI) for exposure to external dose for cancers in the Mayak cohort, NRRW, the 15-country nuclear worker study and the Japanese A-bomb survivors.
| Study period | No. of study population | Range of doses in Gy (mean) | No. of deaths or cases | ERR/Gy (90% CI) | |
|---|---|---|---|---|---|
|
Mayak PA workers studya | |||||
| Incidence (0-year lag) (this study) | 1948–2004 | 22 366 | 0–7 (0.5) | 1447 | 0.06 (−0.001; 0.13) |
| Mortality (5-year lag) (Shilnikova et al, 2003) |
1948–1972 |
21 500 |
0–>10 (0.8) |
1062 |
0.08 (0.02; 0.12) |
|
Third NRRW study (10-year lag) | |||||
| Mortality
Incidence
(Muirhead et al, 2009a) |
1955–2001 |
174 541 |
0–0.5 or more (0.025) |
5118
8443 |
0.32 (0.02; 0.67)b
0.31 (0.05; 0.58)b |
|
15-country nuclear worker study (10-year lag) | |||||
| Mortality
(Cardis et al, 2007) |
1943–2000 |
407 391 |
0–0.5 or more (0.019) |
3528 |
0.59 (−0.16; 1.51)b |
|
Japanese A-bomb survivorsc (5-year lag) | |||||
| Mortality (Ozasa et al, 2012) | 1950–2003 | 86 611 | 0–4 (0.20) | 10 929 | 0.42 (0.32; 0.53) |
| Incidence (Preston et al, 2007) | 1958–1998 | 105 427 | 17 448 | 0.47 (0.40; 0.54) | |
Abbreviations: CI=confidence interval; ERR=excess relative risk; NRRW=National Registry for Radiation Workers.
a
Based on all solid cancers other than lung, liver, bone and non-melonama skin cancers.
b
Based on all solid cancers excluding lung and pleura cancer.
c
Based on solid cancers and survivors exposed at ages of 30 years or more, at an attained age of 70 years, 5 year. c: 95% confidence interval.