Mr. Roger Ray
July 18, 1985
Page 2
Effects on Longevity
There is no evidence that prolonged residence on Rongelap since 1957 has
resulted in a shortening of life expectancy:
Residence Category
tlumber of Deaths
Intermediate
e7
Short-term
Mean age at Death
20
Long-term
Total
61.4 years
66.6 years
>
S2¢
Average
70.0 years
64.9 years
* Does not include 2 accldental deaths.
Effects on Thyrold Neoplasia
There is no evidence that prolonged residence on Rongelap since 1957 has
resulted {n an Increase in thyrold neoplasia. Nine unexposed persons in the
Comparison group have had surgery for thyrold nodules:
Residence
Category
Shorteterm
Intermediate
Long-term
Mumber
of Fersons
58
46
29
Tota]
133
Mean Ace
in 1985 (yr)
47.1
46.4
46.9
Number with
Thyrold Nodules
Removed
4 (7%)
3 (7%)
_2. (7%)
9
Humber of
Thyrold Cancers
1
0
a
2
These figures apply to the 133 unexposed persons in the Comparison group who
ere living.
All of the 9 persons who had thyrold nodules removed are stiJ1
alive,
Effects on Blood Counts (1985 data)
There 1s no detectable effect of residence on Rongelap on blood counts:
Residence
Number
Long-term
26
Category
Short-term
Intermediate
Tested
24
40
Neutrophils/ul
+S)
48517282089
: 3838 992
- 836621551
Lymphocytes/ul
__#90
- 275481006
28352 908
PlateJets/ulx103
26122 787
250
279%111
292+ 59
262% 51
A test of equality of means showed no statistically significant differences
among the three categories.
Note that the number of blood tests performed
(90) {8 less than the number of persons in the Comparison group.
because not all were seen in the March-April, 1985, survey.
sgagbbs
8
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