Table 2.
Characteristics of the Life Span Study and INWORKS subsets used for comparison
| Life Span Study N = 45,625 |
INWORKS N = 259,350 |
|
|---|---|---|
| Period of exposure | 1945 | 1945–2005 |
| Period of follow-up | 1950–2003 | 1950–2005 |
| Percentage of males | 36% | 88% |
| Age at exposurea (years), mean [range] | 37.3 [20.1; 59.9] | 37.7 [19.4; 71.5] |
| Attained age (years), mean [range] | 65.9 [27.6; 112.1] | 60.0 [25.5; 112.3] |
| Colon doseb,c (mGy), mean [range] | 115.7 [0.0; 2,905.2] | 19.2 [0.0; 1,237.1] |
| Percentage of individuals with colon doseb < 100 mGy | 78% | 96% |
| Red bone marrow doseb,c (mGy), mean [range] | 134.3 [0.0; 3,630.0] | 17.6 [0.0; 1,131.5] |
| Person-years (millions) | 1.48 | 6.18 |
| Causes of deaths | ||
| All causes, n (%) | 37,943 (83.2%) | 59,118 (22.8%) |
| Solid cancer, n (% of total deaths) | 7982 (21.0%) | 16,279 (27.5%) |
| Leukemia,d n (% of total deaths) | 196 (0.5%) | 464 (0.8%) |
aAge at atomic bombings in the LSS; age at mid-period of radiation monitoring in INWORKS
bWeighted absorbed dose including a neutron contribution in the LSS
cCumulative dose without any neutron contribution in INWORKS
dExcluding chronic lymphocytic leukemia in INWORKS