Th Age at Group Ron, exposure < 10 4p exposed 10-18° (175 rads) > 18 All Ailingnae exposed < 10 thyroid dose?, rads 810-1150 335-810 335 275-450 In utero exposed All Utirik exposed Est. 556e 10-18 > 18 All Rong. + Ail. >vid Lesions in Marshallese, Ma: fa Subjects? with No. subjects bo Subjects” wit thyroid lesions with surgery malignant lesi 89.5(17/19) 21.2 (7/33)4 2h 6.3 (4/64) 26 4,7 (4/86) 1 1.7 (1/58) 0.0 (0/1) 36.4 (4/11) 33.3 (6/18) 1f 175+? 69+? 33.3 (1/3) 0.0 (0/1) 1 0 14.3 (3/21) 7.6 (6/79) 7.0 (11/158) Rong. + Ail. + Utirik All 30-1150 18.4 (45/244) Rongelap unexposed < 10 10-18 > 18 All 3.4 (2/58) 0.0 13.3 5.7 4.3 (0/72) (2/15) (7/122) (9/209) 4.4 (4/90) < 10 10-18 > 18 All 12.5 (2/16) 9.4 (3/32) 6.5 (9/338) 4.8 1.3 1.9 (1/21) (1/79) (3/158) 34 2.9 (7/244) 0 2 2 4 0.8 0.5 (1/122) (1/209) 3 1.1 (1/90) 0 8) 3 < 10 10-18 > 18 All 0.0 0.0 5.6 3.4 (0/43) (0/17) (5/89) (5/149) 0 0 0 0 NYotje unexposed < 10 10-18 > 18 All A.9 6.3 5.0 5.1 (4/82) (1/16) (3/60) (8/158) 1 0 0 1 All unexposed < 10 3.1 (9/287) 4 5.9 (18/303) 2 > 18 All (2/33) 2 5 8 Likiep unexposed 10-18 6.1 0 3 4 39.5 (34/86) 27-60 30 50& Utirik unexposed (1/12) 33.3 (2/6) 60-95 (1/19) 8.3 4 42.2(27/64) 5.3 2 190 135 217¢ 135-1150 10-18 > 18 All 15 25.0 (3/12) < 10 (14 rads) 1.978 7.8 (5/64) 2 4.9 (32/654) 8 0.3 (1/287) 0.3 (1/303) 0.3 (2/654) calculations “Dose from 131, 1327, 1337 and 1357 plus gamma; mean dose extrapolated from adults and 3-year olds. OB e ‘on number of people -«posed, excluding those in utero (number of cases/total number in g “The thyroid is considered to be fully developed by about age 18. “weighted mean dose. Jone additional case of adenoma, found at autopsy, not included here. Lt was scored as benign. ‘Pathologists differed as to whether this lesion was malignant; rar 9 hi for