. 4 Would it be correct to say that we can exoect many more cases problems in the future? . ° thyroid . Ac this time it is impossible to predict whether more thyroid nodules will develop in the Utirik population. It is therefore of the greatest detected early, : By having regular medical exeminations, signs of thyroid cissese o o a importance that the regular medical examinations b2 continued in the future. and prompt treatment will avoid unnecessary sufferin ng on + wat +t Tha ~d) a the part ofco the Vhirik people, _VWhy is there not a control group in Utirik? a} The people of Utirik are different from the people of Rongelep-—they are a different gene pool and breeding vonulatione b) The people of Utirik were exposed to different levels of radiation then the people of Rongelap---Utirik had 1; rads, and Rongelap had 175 rads In conducting the medical examinations on the Marsnallese, e@ comparison (control) group was selected so that the exposed and non-exposed people couid be compared. This comparison group was selected in 1958 from the unexposed people of Rongelap. A separate unexposed group of comparison people from Utirik was not considered necessary since the Pongelap group was considered adequate for comparison with both the peoples of Rongalap and Utirik. . 7 The slight genetic difference between the two exposed populations and aif ferences in doses received were not considered sufficient reasons to select a separate comparison group for Utirik. qu 50) 685i