30)
Table 1%
Rongelap Thyroid Abnormalities, Age Specific Incidence (1966)*
Nodules
Hypothyroidism
Total abnormalities
Age at exposure
Na. exposed
No.
oi
No.
H
No
% of Group
1-5
13
9
69.2
2
13.4
1]
84.6
7
0
0
-
-
0
0
1-20
a
0
0
-
-
0
0
> 20
24
2
8.3
-
-
2
8.3
h -10
1) -15
6
,
4
66.7
-
-
4
66.7
*In 55 living oforiginal 64 Rongelap people in heavily exposed group . One nodule in woman in less exposed group
inot included in table).
Table 19
Vhyroid Abnormalities (Nodules and Hypothyroidism) in Marshallese Populations Examined 1964-1966
Age (1954) < 10 ye
[sland group
No.
Estimated
thyroid
cxamined
Rongclap
19
Nilingnact
.
th
Utirikt
40
Unexposed
(Roneclap and Utirik)
Age (1954) 10-19 yr
a
dose**
Abnormalities
examined
f 700-4400
y 175
78.9
£275-550
y 6Y
fo
y
thyroid
%
dose**
Abnormalities
12
f 350-600
y 1a
0
(0.0
1
/ 175-300
y 69
JO
95-110
0.0
Ib
{
25-55
0.0
-
0.0
3b
-
0.0
I4
ol
Age (1954) 20-40 yr
No.
examined
Estimated
No.
Estimated
thy roid
dose**
y
Id
Age (1954) >40 yr*
%
No.
Abnormalities examined
All ages
%
Abnormalities
No.
examined
To
Abnormalities
Rongelap
14
/ 160
y 75
14.3
10
0.0
55
30.9
NMilinunaet
4
food
¥ 64
25.0
;
0.0
14
7.1
3)
f lt
y l4
4.5
21
4.8
99
2.0
0.0
49
6.1
194
1.3
Uiirikt
Uniex posed
(Rongelap and Gtirik)
44
“Dosage inthis group was the same asin the 20 to 40-seur eroup.
"f= Dose from foand y radionuclides: y = dose from external y radiation.
thn estimating the thyroid doses to the Ailingnae and Uurik exposed group it was assumed that such doses were
propertonal to the thyroid doses of the Rongelap exposed group. based on relative whole-body gamma dose received.