Table 1
Summary of Thyroid Abnormalities in the
Marshallese Unexposed Comparison Groups 1954-1983
Group
Age 1954
Number
Total
Nodules
Carcinoma
229
6
2
_
<10
Hypofunction
10-18
79
6
1
1
>18
292
25
2
1
600
37
5
2
227
5
2
--
Total
Age~ and SexMatched Group
Followed
Since 1954
Table 2
Age Group <10 Data Summary
Number of PersanS. ssecccccrsesececewccn rene ccen ses sreresssesesceceessesseees OD
Internal Exposure,
PersonRad... .csccccssctccccssccnncsuscesseesceese
120,000
External Exposure,
Person—Radssccessevccsccssensseesssacsssessseseesesas
35400
Number of Observed Carcinomas. c.ccseccccccvcrsecnnetntsccvevensssesesssveene f
Average Years Post-Exposure to Onset of Carcinoma. -cceccesssecsccssssune
Assumed Latent Period,
Number
of
Expected
Years. .ccccscsccsecsscnccnsscssecseeesensecess
Spontaneous
CaTciNoOMaS se
24
22
2 and 10
csccsenrevevecseesssneseseens
0.80