TTT TTT
TTT TTT
Tr
Tr
i40r*
STATURAL GROWTH
1958-1962
SY AGE AT EXPOSURE
Pr
t ror
op ft
bt
Ff
be
;
MEDIAN WEIGHTS
30k
1956 1962
-=
Py
ise
;
i
1
t
_
120 =
170 =
HO
E
~140pe
lad
«
2 130e
<
w
2 20r
=
«
Pe
OR
2
(coe
90
f
7
a
a
a---- EXPOSED
—— CONTROL
@ BIRTH YEAR
Oo
®@
(EXPRESSED AS
+
AGE AT EXPOSUREINOICATED BY
—
CIRCLED NUMBER)
Lpti ite py py
2
_
BOYS
4
6
|
tt
8
0
12
4
CHRONOLOGICAL AGE (YRS)
bt
16
18
8
-e
loo
“T
SOF
MEDIAN WEIGHTS (18S)
160
70
60r-
Sok.
“or
Prat
CL
wser-
BOYS
EXPOSED
—= CONTROL
30 °
20
Figure 4.
showed trends parallel to those of their statures
(Figure 5). However, the weights were more variable, and the differences were notstatistically significant.
The exposed girls did not differ significantly
from their controls in either stature or weight at
any age level (Figures 6 and 7).
Among the children born after the fallout, the
males with exposed parents were smailer in stature
at ail ages than those with nonexposed parents
(Figure 8). The difference was statistically significant at ages 1 through 4. This trend had been
noted in the previous study. However, the boys in
the group with exposed parents were, on the average, 4 months younger than their controls (the
boys © *h unexposed parents). The median difference .1 stature between the two groups was 4.4
cm, and from their growth curves the boys with
exposed parents would be expected to be 2.3 cm
shorter on the basis of the age difference. Since
much of the difference in stature was readily
accounted for by the age difference, the data did
not justify a conclusion that there was a difference
in stature associated with the exposure of the parents. The girls of exposed parents did not differ in
2
7
=
Popo 1 )
4
6
pd
a
10
l2
\4
16
is
CHRONOLOGICAL AGE (YRS)
20
Figure 5.
age from their controls; nor were there age differ-
ences between any of the comparison groups of
children born before fallout. The boys of exposed
parents did not differ significantly from the boys
of unexposed parents in weight or head circumference (Figures 9 and 10). The girls of exposed parents did not differ from the girls of unexposed parents in stature, weight, or head circumference
(Figures 11, 12, and 13).
Skeletal ages, based on the standards of Greulich and Pyle, paralleled the statural development
of the children. Both the exposed and control Marshallese children tended to be less mature skeletally
at comparable chronological ages than the norms
published by Greulich and Pyle (Figure 14). However, the boys were significantly less mature skeletally than the girls, being on the average 7 months
retarded, as compared with 2 monthsfor the girls.
Also. the exposed children were significantly less
mature skeletally than the controls. The median
skeletal retardation of the exposed children was 8
months, as compared with 3 months for the controls. The difference in skeletal maturation associated with exposure was more prominent in the
boys than the girls. The average exposed boy was
.