33 EosINOPHILS, MonacyYTEs, AND BAsopHILs. The levels of these cells were not remarkably different between the exposed and unexposed groups and were similar to the levels in past surveys. Pratrerets. The platelet levels in the 9 and 10-year surveys both revealed greater deficit in exposed males than in exposed females. Compared with the unexposed groups the males had 20% less in 1963 and 12% less in 1964, and the females 7% less in 1963 and 2% less in 1964 (see Figure 35). In the scattergrams (Figures 36 through 39) and the accumulative distribution curves (Figures 24 and 25) the differences are clearly shown. ERYTHROPOIETIC ELEMENTS. Asin the pastsur- veys no significant differences were noted in the red blood counts, hemoglobins, or hematocrits ” ] I T T 1 TT GO ® -4 2 = Ww cd I ao © re 2 ui 2 | j 20 | 30 40 [ ge 50 AGE (years) 60 fot 70 80 T | T T ° 40 30 T T plotted against age. Solid line represents meanlevel of unexposed male population, 1964. 8.07 T FEMALES 1963 TTT TT FEMALES 1964 7.0 . NEUTROPHILS x 1073 NEUTROPHILS «x 10°3 50 Figure 28. Neutrophil counts of exposed Rongelap males 7.0 6.0 y AGE (years) Figure 26. Neutrophil counts of exposed Rongelap males plotted against age. Solid line represents mean level of unexposed male population, 1963. 8.077 T MALES \964 4 iO These analyses (1961, 1962, 1963, and 1964), sex, exposed Rongelap versus nonexposed, and age (5 to 15, >15 to 40, >40). Thus, for each of the blood components, main effects and interaction effects were MALES 1963 70k 2oLl Data Over Past Four Years. are in progress, and the following represents a preliminary report by Mr. Keith Thompson of Brookhaven National Laboratory. ‘A factorial analysis of variance of unweighted means was madefor each of four blood components: platelets, white blood cells, neutrophils, and lymphocytes. For these preliminary analyses, the population wasstratified into four factors: years NEUTROPHILS x 10> 8.0 .~- between the exposed and unexposed groups. Figures 40 through 49 demonstrate this point. STATISTICAL ANALYSIS OF RONGELAP BLoop 5.0 4.0 AGE (years) Figure 27. Neutrophil counts of exposed Rongelap females plotted against age. Solid line represents mean level of unexposed female population, 1963. VOGeG1b 6.0 5.0 40 40 50 60 AGE (years) 80 Figure 29. Neutrophil counts of exposed Rongelapfe- males plotted against age. Solid line represents mean level of unexposed female population, 1964.