Mr. Roger Ray
July 18, 1385
Page 2
Effects on Longevity
There {s no evidence that prolonged residence on Rongelap since 1957 has
resulted in a shortening of life expectancy:
Residence Category
Short-term
Intermediate
tumber of Deaths
20
e7
Long-term
5
Total
"
52*
Nean age at Death
61.4 years
66.6 years
Average
70.0 years
64.9 years
* Does not include 2 accldental deaths.
Effects on Thyroid Neoplasia
There 1s no evidence that prolonged residence on Rongelap since 1957 has
resulted In an increase in thyroid neoplasia.
Nine unexposed persons in the
Comparison group have had surgery for thyroid nodules:
Residence
Category
Short-term
Intermediate
Long-term
Number
of Fersons
58
46
Total
29
133
Number with
Mean Age
in 1985 (yr)
47.1
46.4
46.9
Thyrold Nodules
Removed
& (7%)
3 (7%)
_2 (7%)
Humber of
Thyrold Cancers
1
0
1
9
2
These figures apply to the 133 unexposed persons In the Comparison group who
are living.
alive.
All of the 9 persons who had thyroid nodules removed are st11)
Effects on Slood Counts (1985 data)
There Is no detectable effect of residence on Rongelap on blood counts:
Residence
Number
Neutrophils/ul
Short-term
24
465122089
Category
Intermediate
Long-term
Tested
40
26
+SD
Lymphocytes/u)
+50
Platelets/ulx10
27548 1006
- 3838% 992
836621551
28352 908
2612% 787
250
27eeit1
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) is less than the number of persons in the Comparison group.
because not all were seen in the March-April, 1985, survey.
58
This is