Table 6
Risk Coefficients? for Marshall Islanders,
5~Year Latent Period
Excess
Group
Years
Thyroid
Total
at
Risk
Cancers
Person-Rad
Risk
Coefficient
Age 1954
Number
<10
10-18
>18
85
32
120
2.2
2.7
1.9
120,000
21,000
56,000
17.2
22.7
11.2
L.ix107®
5.8x107°
3.0x1076
237
6.8
200,000
14.9
2.3x107°
Tocal
4Thyroid cancers per person-rad~-years at risk, based on thyroid dose from
internal plus external sources.
Table 7
Estimated Risk Coefficient? for Internal and External Exposure
10-Year Latent Period
5-Year Latent Period
External
Internal
External
Internal
Risk
Risk
Risk
Risk
Coefficient
Coeffictent
Coefficient
Coefficient
85
32
120
3.31076
3.3x107°
1.0x1078
1.4x10786>)
8 .0x1075
6.1x1076
2.5x1076
2.5x1076
1.3x1076
1.0x107°
6.3x107°
3.3x107°
237
2.1x1078
4.7x107°
1.9x107°
2.9x107°
Group
age 1954
<10
10-18
>18
Total
Number
“Thyroid cancers per person-rad-years at risk.
ba value of 1.3x1076 results when 4.9x107° is used for the external risk
coefficient.
26