Impact of smoking on mortality and life expectancy in Japanese smokers: a prospective cohort study.
OBJECTIVE: To investigate the impact of smoking on overall mortality and life expectancy in a large Japanese population, including some who smoked throughout adult life. DESIGN: The Life Span Study, a population-based prospective study, initiated in 1950. SETTING: Hiroshima and Nagasaki, Japan. PARTICIPANTS: Smoking status for 27,311 men and 40,662 women was obtained during 1963-92. Mortality from one year after first ascertainment of smoking status until 1 January 2008 has been analysed. MAI...Expand abstract
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