32
group whoreceived 175 rads are designated as
“Rongelap exposed,” the Rongelap people who
received a smaller exposure of 69 rads as “ Ailingnae
exposed,"’ and the larger unexposed comparison
population of Rongelap as unexposed." Because
of the small numberof people in the Ailingnae
group, their data were not treated as fully as those
for the Rongelap groups, and are briefly summarized in a separate paragraph. The Utirik data
are summarized separately also. Because of certain
differences noted in age and sex groups between
comparisons of mean levels for entire groups,
comparisons are also made of age and sex groups.
Ages 9 to 15, 16 to 40, and > 40 years for each sex
are compared.
The hematological data are summarized in
Mean
99 Gears)
_
creased over the 8-vear levels, and the 10-year
2
2
(—4%) at 9 years, and at 10 years, lower by 9%.
Most ofthe difference was due to lower neutrophil
levels in the exposed group (see Figure 2.').
a
.
.
4 4%
}
ee
72 6
Bars
.
2 Tom tit
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te het
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2.3
-
4
AFTER
.
5
.
6
.
7
-
86
ee
9
10
TEARS
ELSOSURE
Figure 23. Mean neutrophil and white blucd counts of
exposed Rongelap peopie from ume of exposure through
10 vears post exposure Stars represent mean values of
companson pupulation.
44
ALSTELE "S30 *
Figure 26 Neutrophil cou
plotted against age. Solid
unexposed male populatio
a
w
t
MQ
"ME
60
neutrophils, ivmphocvtes. and platelets, 1963.
had
Z 100 -"™
C100SE9 Teme OF wawue OF nTSs.0N
noms
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3
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29
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5
3 40
28
eee TES oD ?
a0
7 EID fhe “Ea fos fae
NEL TROPHILS
oO
20
Figure 24 Cumulative percent distribution curves for
_
pont
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SO
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veys no significant differes
red blood counts, hemog
ra
"
o-
the accumulative distribud
and 25) the differences ara
ErytHroporetic ELEMEN
ve
a
elle
1?
In the scattergrams( Figury
.f
fof.
ff
“48
|
with the unexposed groups
a
a)
LEURUCTIES ANU NEUTACPHILS a?
—
a
re
i
ig
4
=
fao-
12% 30 DearS:
f
ed
j é
™
it
<@ 60r
slightly lower leukocytes than the unexposed
le
vir.
Wi
aff
2
levels were higher than those for ether of the two
preceding years. The exposed group had only
ot S@ Oars:
ae
@ a6 ~
~
exposed males than inex
NE UTHUPHHL S 6 10 >
—_— 09 ene arteaT yon
* EXPOSED 4 YEARS OOST EUPOS
* JME POSES
© ERPOSED, “ME OF eehW ied OF PIRES Sa0iy
levels of leukocytes in both exposed and comparison populations at 9 years post exposure were in-
Praterets. The plate
10-year surveys both reve
NE UTPHie On HU 5
tions and of the various comparison populations
ee
in 1963 and 12% less in |
tess in 1963 and 2% less
showed little difference between the exposed and
unexposed groups during the 9 and 1-year surveys; however, some individual lymphocyte couns
were lowerin the exposed group. Lymphocytelevels are shownin Figures 24, 25, and 30 through 34.
since exposure in March 1954. In Appendices 4
and 5 arelisted the individual blood counts for
1963 and 1964. In Appendix 6 basophil counts
(Or eer
younger age groups ( <40 years). The exposed
older age groups ( >40 years) did not share the
deficit as much as has been noted in the past (Figures 26 through 29).
Lymenocytes. Lymphocyte levels were slightly
higher in the exposed and unexposed groups during the 9 and 10-yea_ surveys. [n contrast to the
8-year survey results, the lymphocyte mean levels
Tables 18 and 19 and in Figures 23 through 49.
In Appendices 1, 2, and 3 are presented summaries
of the mean blood counts of the exposed popula-
Leuxocytes.
Eostsornirs, MONOcy TES,
levels of these cells were not
between the exposed and u
were simular to the levels tn
neutrophil deficit was greater in the exposed
the exposed and the unexposed, in addition to the
are presented.
Rongelep Population.
Nevtrormits. The neutrophil levels inc-eased
slightly at the time of the 9 and 10-vear surveys in
both exposed and comparison populations. Ac9
years the neutrophillevels were about 5% lower in
the exposed than in the comparison group,butat
10 years they were about 20% lower. Neutrophil
levels are shown in Figures 23 through 29. The
20
eee
«
a0
PLATELETS a :0°*
Figure 27)
Figure 25. Cumulative percent distribution curves
for neutrophils. lymphocvtes, and platelets. 1964.
Neutroph
males plowed against
level of unexposed fem