The long-term impact of smoking cessation on mortality is assessed among two U.S. populations : a large cohort of U.S. veterans aged 55-64 at entry and followed from 1954 through 1979 and the NHANES I Epidemiologic Followup Study (NHEFS) cohort of a national sample of U.S. adults aged 55-74 at entry and followed from 1971 through 1992.
Direct and indirect survey data indicate that 50-70% of those who were current cigarette smokers at entry had quit smoking during the 19-to 26-year follow-up periods.
The impact of smoking cessation on mortality among the cigarette smokers as a whole has been assessed by determining the time trend of the relative risk (RR) of death and 95% confidence interval (Cl) for the cigarette smokers compared with never-smokers over the entire follow-up period in both cohorts.
The total death rates for the 1954/57 U.S. veteran smokers as a whole (63,159 males) have converged only slightly toward those of never-smokers, from RR=1.65 (1.58-1.72) during 1954-1959 to RR=1.61 (1.58-1.63) during 1954-1979.
The lung cancer death rates for 1954/57 smokers as a whole have not converged toward those of never-smokers, with RR=10.89 (7.70-15.41) during 1954-1959 and RR=11.10 (9.78-12.61) during 1954-1979.
The total death rates for the 1971-1975 NHEFS smokers as a whole (694 males and 1116 females) have not converged toward those of never-smokers.
For males, RR=1.92 (1.46-2.52) during 1971-1982 and RR=1.96 (1.63-2.36) during 1971-1992 ; for females, RR=1.79 (...)
Mots-clés Pascal : Tabagisme, Sevrage toxique, Tabac, Mortalité, Cause, Mort, Epidémiologie, Evolution, Taux, Homme, Etude cohorte, Etats Unis, Amérique du Nord, Amérique, Ancien combattant
Mots-clés Pascal anglais : Tobacco smoking, Detoxification, Tobacco, Mortality, Cause, Death, Epidemiology, Evolution, Rate, Human, Cohort study, United States, North America, America, Veteran
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0482324
Code Inist : 002B30A01A2. Création : 22/03/2000.