to 30.25]) (Table 3). Approximately half this increase reflected the lower background death rate among men in the contemporary period who had never smoked, as compared with those in the 1982– 1988 period. The relative risk for female smokers also more than doubled over this period, from 10.35 (95% CI, 8.63 to 12.41) to 22.35 (95% CI, 19.55 to 25.55) (Table 2).