Table 8 Physical Findings, Pediatric Examination (See Table 13 for thyroid . .normalities) Control Exposed Rongelap ——_—__—_—___—_—_——__ 1967 1968 1969 Born before 1 Jan 1955 Born after 1 Jan 1955 Utirik 1969 1967 1969 1967 1969 Nonexposed, born of exposed parent(s) — 1967 1969 Numberexamined 19 15 16 25 29 18 66 82 67 77 Blood pressures taken Hypertension Keloids Active skin infection Molluscum Tinea versicolor Vitiligo Warts Papilloma Café-au-lait spots Foiliculosis Otitis media 16 1 I ] 1 2 i 4 6 ~ l l 1 1 2 15 ~ ~ 3 3 1 - 25 1 1 1 3 27 3 4 1 1 9 18 ~ 2 ~ 5 36 ~ 11 43 25 1 l 3 2 3 30 13 9 ~ 4 \ 8 39 22 4 3 I 5 Hypertrophic tonsils Dentaicaries Cheilosis Conjunctivitis Thrush Chickenpox Adenopathy Palpableliver 2 1 - 1 - 2 3 2 - 4 4 1 ~ - 6 2 1 - 7 16 1 ! 6 1 20 20 l I 7 2 4 21 1 5 6 17 19 4 8 2 Umbilical hernia Systolic murmur ~ 6 6 3 2 43 6 34 = 34 l 26 - - _ - Respiratory infection Palpable spleen Anisocoria Pes excavatus Wrist deformity Club foot Dwarfism Polio residual 1 ~ - - - - ~ - 1 - - 1 - - 7 3 _- - 7 - 3 16 - 1 _ The lines on Figures 15 and 16 represent the best fitting linear relationships plotted by the leastsquares method. The points representing the markedly growth-retarded boys and showingtheir early response to thyroid hormone administration can be recognized by comparison with Figures 31 to 33. The graphscontinueto indicate that in the Marshallese children the skeletal age values at comparable chronological ages are lower (by about 6 to 12 months) than the norms for Ameri- can children presented by Greulich and Pyle.1> The interpretation of growth data from the exposed Rongelap children has been complicated by partial or total thyroidectomies in those children developing nodules (see Thyroid Findings, below) and by the administration of thyroid hormoneto the whole exposed Rongelap populationsince September 1965. The response of certain individual 1 ~ 3 3 - - - _ ~ - 4 ~ - 11 - ~ - 7 | - 16 3 1 ~ 1 l 5 8 - ] - hypothyroid children to thyroid hormoneis readily seen in the growth curves (Figures 31 and 32). The increase in yearly growth rate in males exposed at <5 yearsof ageis significantly greater after thyroid treatment (<0.05) than in unex- posed males of comparable age during the sameperiod (based on an analysis of variance using weighted squares of means of yearly growth increments). In order to probe the feasibility of conducting psychometric tests, the IPAT (Institute of Personality and Ability Testing) Culture Fair Intelligence Test, Scale 2, Form A!® was given in 1969 to a group of Marshallese subjects on Rongelap Island and to another group on EbeyeIsland. This particulartest is designed to be comparatively immune to “contamination by accidents of social, educational, and racial background,”!? and has been used before in several groups of Micronesians.1®