Impact of smoking on mortality and life expectancy in Japanese smokers: a prospective cohort study.

ABSTRACT:

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.

Main outcome measures

Mortality from all causes in current, former, and never smokers.

Results

Smokers born in later decades tended to smoke more cigarettes per day than those born earlier, and to have started smoking at a younger age. Among those born during 1920-45

SUBMITTER: Sakata R 

PROVIDER: S-EPMC3481021 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature