Overall survival after 35 years among smokers and non-smokers,
male doctors, 1951-91, Great Britain
Never smoked
100
regularly
80%
80
Current cigarette
smokers
60
% alive
59%
7.5 years
40
33%
20
12%
0
35 40 45 50 55 60 65 70 75 80 85 90 95 100
Age
Doll, R et al (1994) BMJ 309.