Preferred Approach Total risk = B.M. Dose x Leukemia risk coefficient + W.B. dose x (total risk - B.M. risk) Pop. for risk assess. 500 for living on Southern Islands 250 for Enjebi } assumed [If Enjebi is occupied ~ only dri Enjebi would live there (250) if Enjebi is not occupaied - all 500 would live on Southern Islands) (during visit - 541 Enewetak people) 50-year dose should be used - 30 years is too short Risk Coefficients - 5 sets of analysis should be done using: a b. Cc d BEIR I BEIR BEIRIIII UNSCEAR ~ ~ ~ % increase as before risk/man rem lowest coefficient - absolute - lin. quad. highest coefficient - relative - linear Because of the proportion of children I believe the cancer risk should be calculated on an age basis. The leukemia risk coefficient is equal to total cancer risk coefficient when irradiation is in utero and decreases to about one-fifth of total cancer risk coefficient after ~ age 30.