15 another case, loss of the outer one-third of the eyebrow hairs was suggestive of the disease, but a skin biopsy revealed no acid-fast bacilli. No cases of retinal scars were observed that might have resulted from retinal burns possibly caused by observation of the fireball of the nuclear explosion that resulted in the fallout accident, although many people on Rongelap reported see- ing the fireball and described it as resembling the “rising sun” in the western sky. PEDIATRIC EXAMINATIONS During the 1962 survey, 30 exposed chidren, 71 control children, 37 children born to exposed parents and 25 children born to uncxposed parents were examined. The size of the pediatric study population (Rongelap series) during each of the last 5 surveys (1958 through 1962) is shown in Tables 5 and 6. The fluctuations from year to year in the numbers of children scen have resulted from (a) movement, generally temporary, to other atolls, (b) graduation from the pediatric to the adult study, and (c) addition of newborn babies. Attrition due to unavailability has been minimal in the exposed group. One child in 1959 and one in 1961 could not be examined, but each of these children returned to the study the subsequent year. In the control group, the attrition rate has been higher, 11.3% for the lust 5 years. The frequencics of various abnormal findings on physical examination have been summarized in Table 7. As in previous years, no consistent relationship was noted between the occurrence of these abnormalities and exposure to radiation. Growth and Development Studies In the analysis of the growth data, previously described statistical methodology was used." The children were divided into 4 groups: (a) those exposed to radiation. including the 4 children in utero at the me of exposure. (b) those born before the fallout but not exposed to radiation, (¢c) those born to exposed parents subsequent to the fallout. and (d) those born to unexposed parents subsequent to the fallout, Height and weight data on children born before the fatiout showed the expected pattern of pubertal Table 5 Variations in Composition of Pediatric Population, 1958 through 1962: Rongelap Group Numbers of children 1958 1959 39 — 34 I 36 0 30 1 30 0 adult study — 4 0 5 ! Control group Total scen Not available Transferred to 88 — 75 13 51 25 75 0 71 10 — 3 2 3 0 — 3 3 27 2 — — —~ — 4 Exposed group Total seen ‘Not available Transferred to adult study Not seen previous year New subjects added 1960* 1961 1962 *Limited survey. Table 6 Variations in Composition of Pediatric Population, 1958 through 1962: Children Born After Fallout (Rongelap) Numbers of children 1958 1959 Number seen 13 20 10 24 37 New babies added — 7 Q 5 12 — 0 iQ | 0 — 0) (0 10 | 7 0 14 25 7 0 8 10 0 0 I | () 0 0 l Exposed parents* Not available from previous year 1[9607*1961 1962 Old subject not seen previous year Unexposed parents: Number seen New buhies added Not available from previous year Old subject not scen previous year *This category includes only those who were babies at the time they were added to the study. Those who were older at the time they were first seen have heen grouped with the regular control children. **Limited survey,