10 Table 1 Location of Rongelap People Exposed _ Majuro Kwajalein Rongelap Eniaetok Other atoils Aduit Children 3 6 1 3 5 12 1 13 30 37 Rongelap exposed (116 people, 1961; Rongelap includes unexposed childrenof (220 people, exposed Age, yr 1961) adults) Median age, yr 1 0 52 Percent Distribution of Population by Age Groups <15 15-24 25-44 45-64 >65 7 24 23 Table 2 Marshall Islands US. (1961) (1960) 45.4% 12.3 23.6 14.1 4.5 50.0% 13.8 17.2 10.3 8.6 43.1% 14.4 20.0 14.6 7.4 28.7% 13.8 27.1 20.8 9.6 —s«19.5 14.5 18.0 29.5 cal analyses was also examined for sugar in the case of 199 Rongelapese.'** Urine Analyses Urine total iodides and creatinine levels were obtained on 10 casual urine samples of Rongelapese who had previously shown slight elevation of their protein bound iodine (PBI) levels. Total iodine and creatinine were determined. Routine urine analyses were carried out on the majority of people. This included determinations of protein and hypergiucosuria by reagent paper strips. ** *The Clinical Laboratory of the South Nassau Com- munities Hospital carried out these analyses. ** Combistix, Ames Company,Inc., Elkhart, Indiana. Children 3 25 26 0 0 Adult 4 9 33 8 2 Total Unexposed Children of exposed parents 59 109 Total 23 67 75 216 120 348 15 27 Radionuclide Body Burden Evaluation Since results of the last survey indicated that Cs'#" levels in the Rongelap people had about reached equilibrium and that Zn* levels were dropping, it was considered that gamma spectroscopy with the 21-ton whole-body counter would not be necessary again for several years. Therefore, no gamma spectrographic analyses were done during this survey. However, thirty-five 24-hr urine samples and one pool sample (12 liters) were collected for radiochemical analysis for Sr®. In addition, samples of rib and vertebrae taken at autopsy from the 78-yr-old woman who had died were brought back for Sr®* analysis; also 4 coconut crabs collected at Rongelap.** Results and Discussion The census of Rongelap people in March 1962 was 348, of which 82 were in the exposed group (including 4 children exposed in utero at the time of the accident), 37 were children of exposed par- ents, and 229 were unexposed people; Table | shows their locations. In Table 2 the population is broken down according to percent distribution in various age groups and compared with that of the Marshall Islands as a whole for 1961 and of the U.S. for 1960. The table also shows the median age. The lower median age of the Marshailese **We are grateful to Dr. E. P. Hardy, Jr. and Dr. J. Harley of the Health and Safety Laboratory of the New York Operations Office of the AEC for performing these analyses.

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