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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Radiat Res. 2013 Feb 7;179(3):332–342. doi: 10.1667/RR3054.1

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
a

Number of person-years and lung cancer deaths with positive plutonium doses in the range indicated.

b

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).

c

This confidence interval differs slightly from that in Table 3 because of fixing the sex and attained age parameters.

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