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GROWTH
1958-1962
BY AGE AT EXPOSURE
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1958 - 1962
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MEDIAN WEIGHTS (LBS)
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CHRONOLOGICAL AGE (YRS)
16
18
20
Figure 4.
showed trends parallel to those of their statures
(Figure 5). However, the weights were more vartable, 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).
Amongthe children born after the fallout, the
males with exposed parents were smaller in stature
at all ages than those with nonexposed parents
(Figure 8). The difference wasstatistically signifi-
cant 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 aver-
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16
CHRONOLOGICAL AGE (YRS)
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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 Greu-
lich 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
age, 4 months younger than their controls (the
boys with unexposed parents). The median difference in stature between the two groups was 4.4
published by Greulich and Pyle (Figure 14). How-
exposed parents would be expected to be 2.3 cm
Also, the exposed children were significantly less
cm, and from their growth curves the boys with
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
ever, the boys were significantly less mature skele-
tally than the girls, being on the average 7 months
retarded, as compared with 2 monthsforthe girls.
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