19 urements were determined in children. Compansons have been made between the numbers exam- ined each year. Excluding those who wereshifted into the adult study, the total over-all attrition rate between 1958 and 1959 was 10%. Of the 18 children not seen in 1958 but examined in 1959, 14 were babies born in the interval between the two examinations. The age distribution of children examined in . Exposed Nonexposed with <4 exposed parents Nonexposed, Rongelap Nonexposed, Majuro Utirik Age, yr 4109 20 30 19 15 34 Table 7 26 20 82 Incidence of Chronic Impetigo (Active) 26 6 ? ? >10 Total 9 ? Age, yT 15 60 The occurrence of various medical conditionsis summarized in Table 6. There seemed to be no concentrationofclinical abnormalities in the exposed groups. Since the incidence of manyofthese conditions could have been related to the ages of the children at the time of examination,two of the <4 Ex posed Nonexposed with exposed parents Nonexposed, Rongelap Nonexposed, Majuro Table 8 most frequent findings, active chronic impetigo and palpableliver over 3 cm in size, were tabu- lated separately for several different age groups (Tables 7 and 8). The ages were based on the best available birth date estimations. A tendency for these findings to occur more frequently in the younger children was noted. The incidences, however, did not appearto be related to exposureto radiation. During the physical examinations, the following congenital anomalies were recorded: Patent ductus arteriosus (repaired) Deformityof the hip Pectus excavatum Bifid uvula oe eee ee a wwe Total 7/19 3/15 10/34 7/26 5/26 7/20 25/82 0/6 0/9 0/15 DOE ARCHIVES Incidence of Palpable Liver (Over 3 cm) Age, yr <4 Exposed Nonexposed with exposed parents 2/20 Nonexposed, Rongelap Nonexposed, Majuro 6/30 49 3210 Total 5/19 O/15 5/34 5/26 1/6 0/26 1/9 11/82 2/15 Table 9 1 (Subject 2269) Pediatric Dispensary Visits During 1959 Survey Incidence Nonexposed, Rongelap Nonexposed, Majuro Utirik (low exposure) 310 1 (Subject = 805) 1] (Subject = 896) 1 (Subject = 2265) In addition, the incidence of congenital hypoplasia of the middle phalanx ofthe fifth finger was determined from inspection of the roentgenograms of the left hand. The incidence in relation to varlous exposure categories was as follows: Exposed, Rongelap Nonexposed with exposed parents , 7/20 13/30 4-9 2/33 0/4 5/53 0/14 5/51 Presenung complaint Cough * Back or limb pain Skin sores Otitis Diarrhea Anorexia Headache Worms Loss of hearing Laceration Abdominal pain ee ee eee Number of patients 1 mt et et et RO oo On oD 1959 wasas follows: Hypoplasia of the middle phalanx has beenreported as occurring in the normal population in incidences ranging from 0.5% to 5.2%. The anomaly was found to have considerably greater frequency (25%) in Japanese children.”* The over-all incidence in the Marshallese children was 0.77%. Pediatric dispensary work was carried out preceding and following the regular examinations. In all, 36 children were treated. The presenting complaints are shown in Table 9. we eee 2/20