+ -11Table IV B * THYROID ABNORMALITIES, MORE HEAVILY EXPOSED MARSHALLESE GROUP (a) Age Specific Incidence ¢ Age at Exposure No Exposed 0-5 6-10 11-15 16-20 320 12 Nodules No. 5 41.7 3. 50.0 0 0.0 0 0.0 “2°77 26 (b) Age at Exposure Na.Exposed Hypothyroidism No. | 2 - % 16.7 = - Nodules No. % Hypothyroidism | No. WA 12- 5 41.7 2 16.7 6-10 18 8 44.4 2 11.1 11-15 23 8 34.8 2 29 8 27.6 55 10 18.2 . >20 Total Abnormalities No. % of Group_ 7 3 0 0 2 58.3 50.0 0.0 0.0 7.7 Incidence Per Cumulative Population 0-5 16-20 r qo Total Abnormalities No. % of Group 7 58.3 10. 55.6 8.7 10 43.5 2 6.9 10 34.5 2 3.6 12 21.8 _— Five cases with minimal thyroid abnormalities not included. One 45 year old woman in the lesser exposed group who developed a thyroid nodule not included in this table, 5007429

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