Results of the SMR analyses by race and gender groups for selected cause of death categories are given in Table I. For white males the all cause SMR is 1.00 and the all cancer SMR is .98. Death rates are elevated in the Oak Ridge cohort for lung cancer, diseases of the respiratory system, and all external causes (note that large positive/negative values of the FTR indicate that observed deaths are higher/lower than expected after accounting for the number of deaths involved). Death rates are lower than the U.S. white male rates for cancer of the buccal cavity, digestive system, bladder, and thyroid. Death rates are also lower than expected for white males in Oak Ridge for diseases of the blood, nervous system, circulatory system, digestive system, and genitourinary system. For nonwhite males the all cause SMR is .96. The only elevated cancer SMR with a relatively large FTR is cancer of the large intestine. Death rates for diseases of the circulatory system, digestive system, and liver cancer are lower that U.S. nonwhite male rates.