TABLE 6.
Excess Relative Risk (ERR) per Gy for Plutonium Using Various Plutonium Dose Restrictions
Plutonium doses included | Person-yearsa (Percentage of total) | Number of lung cancer deathsa (Percentage of total) | ERRb per Gy (95% CI) | P for trend (2-sided) |
---|---|---|---|---|
All doses | 108,988 (100) | 253 (100) | 7.4 (5.2–10)c | <0.001 |
Doses <1 Gy | 106,958 (98) | 217 (86) | 7.4 (4.8–11) | <0.001 |
Doses <0.5 Gy | 104,652 (96) | 192 (76) | 6.5 (3.4–11) | <0.001 |
Doses <0.3 Gy | 102,053 (94) | 180 (71) | 8.1 (4.1– 13) | <0.001 |
Doses <0.2 Gy | 98,979 (91) | 163 (64) | 7.0 (2.5–13) | <0.001 |
Doses <0.1 Gy | 90,376 (83) | 128 (51) | 1.3 (<0–9.4) | >0.5 |
Number of person-years and lung cancer deaths with positive plutonium doses in the range indicated.
Shown for males at age 60. Gender and attained age parameters set to the values obtained for the full data set; that is γ1 = 1.5; γ2 =−2.4 (see Eq. 1).
This confidence interval differs slightly from that in Table 3 because of fixing the sex and attained age parameters.