38.8
5,
‘
Eh i

RONGELAP

“2

ris

98.0

on”
WOTJE

KWAJALEIN

i

MAL OELAP

SMEs eSLIEE EL
Islands

=

anes

aaa
TOG MILES

Fig 1.—-Marshall Islands. BRAVO test site is shown on Bikini Atoll. People on

Fig 2.—Prevalence of thyroid nodules. Atolis shown in color inset wer
assumed unexposed to radioiodine from nuctear fallout.

‘.

&
:
Prevalence of nodules (%)

a
SO=-nNH424NEOWHN
OS
Aa
ok
v

Table 2.—-Proportions of Atoll Populations Screened
for Thyroid Nodularity

Utrik
Majit Island
Alluk

Estimated
Popuiation*
201
287
278
353

Wotje
Maioelap
Lae
Ujae
Wotho
Jaluit
Ebon
Ml
Subtotal
Majurot
Kwajaieint
Total

466
534
206
269
74
1295
7e2
681
5855
10 791
6061
22707

Ato

Likiep

20

300

400

Distance (mies)

S00

«00

AS

419

Totat No. (%)
Screened
122 (61)
184 (64)
263 (95)
217 (61)

137 (33)

364
443
149
187
34
759
517
319
3735
4723
1806
7268

(78)
(83)
(72)
Ca,
(46)
(59)
(65)
(47)
(64)
(16)
(30)
(32)

28

es

Pr aes

other atolls were screened for thyroid nodules.

100

4.5 aes
8.7

Lee te)

ba
100 MILES

0

eC

S SaaS

a 8)

_
w

Me

Prrety

UTRIKG?

tk

Q
LURETg

&
LIKIEP

Probability of thyroid nodule

ia)
WOTHO

iaoed
RONGELAP

2

Fig 3.—Weighted linear

popu
BRAVO test on Bikini Atoll.

tan Ty

an

Le,

lations was not

wtolis who hed lived on the other 13 primary atols in
1954 were screened.

RONGELAP

j

roe -

Fig 5.—Probability contours. Graph shows fitted probability contours for thyroid
nodutes for females, computed from complete logistic mode!. Distance was
calculated for each contour of fixed probability, given mean age of females, for
values of 6 from 0° to 80°.

Poet

aioe me ES t-)

JAMA. Aug 7, 1987—Vol 258. No. §

Thyroid Neoplasia—Hamitton etal

631

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