19 urements were determined in children. Compari- sons 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%. Ofthe 18 children not seen in 1958 but examinedin 1959, 14 were babies bornin the interval between the two examinations. The age distribution of children examined in 1959 wasas follows: Age, yr 4to9 210 Total 19 15 34 Table 7 26 6 ? 26 9 ? 20 82 15 60 Incidence of Chronic Impetigo (Active) Exposed Nonexposed with exposed parents Nonexposed, Rongelap Nonexposed, Majuro Utirik 20 30 ? 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 many of these conditions could have been related to the ages of Age, yr <4 Exposed Nonexposed with exposed parents 13/30 Nonexposed, Majuro the children at the time of examination, twoof the most frequent findings, active chronic impetigo and palpable liver over 3 cm in size, were tabulated separately for several different age groups 7/20 Nonexposed, Rongelap Patent ductusarteriosus (repaired) ‘Deformity of the hip Pectus excavatum Bifid uvula 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 incidencein relation to varlous exposure categories was as follows: Incidence Exposed, Rongelap | Nonexposed with exposed parents Nonexposed, Rongelap Nonexposed, Majuro 3 cy oc} a| qu) Utirik (low exposure) 2/33 0/4 5/53 0/14 5/51 7/19 3/15 10/34. 7/26 5/26 25/82 0/6 0/9 7/20 0/13 Age, yr <4 Exposed Nonexposed with exposed parents Nonexposed, Rongelap Nonexposed, Majuro 1 (Subject #805) 1 (Subject #2269) Total Incidence of Palpable Liver (Over 3 cm) 2/20 6/30 4-9 210 Total 5/19 O/15 5/34 5/26 1/6 0/26 1/9 2/20 11/82 2/15 Table 9 1 (Subject +896) 1 (Subject #2265) 310 Table 8 (Tables 7 and 8). The ages were based on the best available birth date estimations. A tendencyfor these findings to occur more frequently in the youngerchildren was noted. Theincidences, however, did not appearto be related to exposure to radiation. During the physical examinations, the following congenital anomalies were recorded: 4.9 Pediatric Dispensary Visits During 1959 Survey Presenting complaint Numberofpatients Cough Back or limb pain Skin sores Otitis 1 Diarrhea Anorexia Headache Worms Loss of hearing Laceration Abdominal!pain — ere RD OO Ow Ww Oo oO <4 Hypoplasia of the middle phalanx has been reported 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 wascarried out preceding and following the regular examinations. In all, 36 children were treated. The presenting complaints are shown in Table 9.