Table One
Thyroid Data
Age
Group At
Exposure
No. with & E
Surgically gy §
Total
Proved
Number Nodules
.£
2 &
Expecte
Nodules’
Expecte
Cancers
Mean
Dose
Rads
Mean Years
C
At Risk,
(Cancers)
Nodule
D
Cancer
Risk,
Risk,
10-6rad-ly~! 10-6 rad ly-
Rongelap
In Utero
3
l
0
0.078
0.026
<10
19
14
1
0.49
0.17
10-18
li
2
1
0.84
>18
32
3
2
20 (-)
25
-
4000
13 (15)
14
0.73
0.14
1700
20 (22)
3.1
2.1
2.5
0.22
1300
17 (13)
‘0.71
3.3
65
20
4
3.9
0.56
2190
15 (16)
8.0
1.5
I
0
0
0.026
0.0087
610
- (-)
-
-
<10
7
2
)
0.18
0.0623
(-)
1]
-
10-18
-
~
~
~
-
- (-)
-
-
>18
11
3
0
0.93
0.077
410
17 (-)
27
-
All Ages
12
>
0
1.1
0.15
700
19 (-)
15
-
.
4
0
O.21
0.069
130
- (-)
-
-
<19
—
4
l
1.4
0.47
490
25 (21)
3.9
0.95
10-18
19
3
0
1.5
0.24
220
20 (-)
>18
24
e
l
6.7
9.59
170
23 (22)
3.9
1.3
All Ages
167
15
2
9.8
1.4
280
23 (21)
4.8
9.61
12
1
0
0.31
0.10
290
20 (-.)
9.9
-
<10
80
20
2
2.1
0.70
1400
16 (18)
10-18
30
5
2
2.1
0.38
760
20 (22)
5.9
1.2
>18
129
14
3
10
0.80
470
20 (16)
3.3
2.2
All Ages
251
40
6
15
2.1
780
18 (18)
7.1
L.l
All Ages
600
Ailingnae
In Utero
1100
=
22
Uririk
In Utero
18
-
All Exposed
In Utero
10
r
ATiere were two infants with atrophy of thyroid which were not counted,
B
‘Co 80.
C
Assumed to be time between March 1954 and time cf surgezy.
Pabsolute
Risk = No,
of excess
cases
due to
radiatior
x 10
mean thyroid dose x No. of subjects at risk x mean years at risk
0.65