Table 3
Age Group 10 to 18 Data Summary
Number of PersonSerccsscccccee cence scene cece esse eee esses eraseeerereseesecee IS
Internal Exposure, Person~Radsecveesesverencccesssseccessscccsssccenss
18,000
External Exposure, PersonRad..cesccscccscasssesessscccccscsccssscceneee
2900
Number of Observed CarcinomaS..cccesccccncectces en sscccnsasssesssssssneseees SF
Average Years Post-Exposure to Onset of Carcinoma. ccssceseccssscsesssces
28
Assumed Latent Period, YearS..ceccccssaccecnesscnvesseseccvesensveses J and 10
Number
of
Expected
Spontaneous
Carcinomas.
.csecccnseenaesesesesseseensee
0.30
Table 4
Age Group >18 Data Summary
Number of PersonsSessscccsscccasceccnccrscncccsenn tte ssaseastsvscvesssscses Lag
Internal Exposure, Person—Rads sssccccccscsccassccsnccccecscssevesesess
48,000
External Exposure, PersonRad.ssscccceccecccerencesoncesseesesesesereses
8,000
Number of Observed Carcinomas...cscscacceserccecs seme c ecw ete nese c ec esas ncese FG
Average Years Post-Exposure to Onset of Carcinomacc.sescsccesrescceresece
Assumed Latent Period,
Y@aTSeccccensvaasccnssevcenesssevesccececnzese
Number of Expected Spontaneous Carcinomas. ..ssceccsessesserensaccenes sae
veneer
16
J and 10
1.1
Table 5
Risk Coefficients? for Marshall Islanders, 10-Year Latent Period
Excess
Group
Age 1954
<10
10-18
>18
Total
Number
Years
Thyroid
Total
at
Risk
Cancers
Person-Rad
Risk
Coefficient
a5
2.2
120,000
12.2
1.5x107°
32
2.7
21,000
17.7
7.4x10°°
237
6.8
200,000
11.3
3.0x107°
120
1.9
56,000
6.2
5.4%107°
@"Thyroid cancers per person-rad-years at risk, based on thyroid dose from
internal plus external sources.
20