Smoking cessation in a prospective study of healthy adult males: effects of age, time period, and amount smoked.
The present study examined effects on smoking cessation of three variables-chronological age, time period, and amount smoked-in 637 healthy male smokers aged 22-69 at baseline. Subjects were followed from 1962-1975 using life table procedures. Age was not significantly related to quitting rates (p = .150). The amount smoked effect approached significance (p = .096) with rates of quitting progressively lower at higher consumption levels. Powerful time-period effects were found (p = .008). Incidence rates of quitting increased from 1962-1970, after which a marked decline occurred. (Am J Public Health 1983; 73:446-450.)
D000328:Adult; D000367:Age Factors; D000368:Aged; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking; D013375:Substance Withdrawal Syndrome; D013997:Time Factors; D014029:Tobacco Use Disorder / Q000523:psychology*