Table Group age 1954 Rongela <10 10-18 >18 Total Ailingnae <10 10-18 >18 Total 1. Summary of thyroid abnormalities in the Marshallese, (Corrected = matched control value subtracted.)* Total nodules Est. thy. No. dose, rad No. 22 12 33 67 810-1150T 335- 810 335 556 av. 17 3 3 23 77.3 25.0 9.1 34.3 74.7 17.4 1.2 28.5 7 1 ll 19 275-450 190 #135 217 av. 2 28.6 26.0 4 6 36.4 31.6 28.5 35.8 4 Corrected % No. 1 1 2 4 Carcinoma % 4.5 8.3 6.1 6.0 275-1150 190- 810 135- 335 482 av. 19 3. 7 29 65.5 23.1 15.9 «33.7 62.8 15.5 8.0 27.9 1 1 2 4 3.4 7.7 4.5 4.7 2.5 7.7 3.8 4.0 Ucirik <10 10-18 >18 Total 60-95 30-60 «30 51 av. 5 3° 9 17 4.7 14.2 11.4 9.1 5.2 6.7 3.5 4.6 1 1 1 3. 1.6 4.8 1.3 1.8 0.7 4.8 0.6 1.1 2 1 2 5 0.9 1.3 0.7 0.8 Matched controls, <10 10-18 >18 Total 229 79 292 600 4% Corrected &% 3 13.6 13.6 4 7 11.8 10.4 11.9 10.1 Total lesions Corrected 4% 88.0 17.4 13.2 38.7 26.0 Rong. + Ail. <10 29 10-18 13 >18 44 Total 86 64 21 79 164 Hypofunction** Corrected 4 No. 3.6 8.3 5.4 5.2 1981. 1 1 9.0 5.2 8.8 5.0 37.3 30.8 3 10.3 10.3 5 8 11.4 9.3 11.1 9.0 73.1 15.5 19.1 36.9 5.2 6.7 3.5 4.6 unexposed 6 6 23 35 2.6 7.6 7.9 5.8 l 1 2 1.3 0.3 0.3 2.6tt 8.9 8.2 6.2 *The cancer estimates are possibly underestimated since all unoperated nodules were considered benign for these calculations. Occult carcinomas were not included under carcinoma. **No nodule cases with hypofunction are included. (See Tables 1 and 2, Appendix IV.) | tThe lower dose estimates for the <10 group were used for in utero cases. tTNo correction necessary. - 59 -