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Cumulative lung cancer mortality according to asbestos exposure under the simulated natural course of exposure (solid black line) and under simulated exposure to asbestos at a level of <5 fiber-years/mL (long-dashed black line), <2 fiber-years/mL (short-dashed black line), <0.1 fiber-years/mL (short- and long-dashed black line), and <0.05 fiber-years/mL (solid gray line) among 3,002 South Carolina textile workers during 117,471 person-years of follow-up between 1940 and 2001.
