Figure 35-2

Figure
35.2. (A) Lung cancer death rates by age for men, current, former, and
nonsmokers, starting smoking at age 17.5 and smoking 26 cigarettes/day.
(B) Estimated lung cancer death rates for women current, former, and
never smokers. Starting smoking at age 18.5 smoking 22 cigarettes/day.
Plotted are current smokers (solid lines), never smoked (dotted line), former smokers (dashed lines). Age-at-quitting cohorts are distinguished by the following symbols at the age of quitting and also at age 80: , 30-39; , 40-49; , 50-54; , 55-59; , 60-64. (From Halpern et al.,⁷ with permission.)