Table 1

 The US incidence rate of successful smoking cessation by age group for US non-Hispanic white smokers, comparing 1980–9 with 1990–9

Age, by decade% Successfully quit/yearRelative odds of cessation95% CI
Successful cessation was defined as self-reported abstinence of ⩾1 year. Data shown are weighted percentages. Odds ratios and 95% CIs from weighted logistic regression adjusting for gender, educational level and income.
20–34 years
    1980–92.41
    1990–93.21.461.42 to 1.50
35–49 years
    1980–92.91
    1990–93.21.101.07 to 1.14
50–64 years
    1980–93.91
    1990–94.51.131.07 to 1.18