Birth cohort | Smoking cessation by year (%) | Age (years) | |||||
---|---|---|---|---|---|---|---|
1972 | 1977 | 1982 | 1987 | 1992 | 1997 | ||
Less highly educated women | |||||||
1913–1917 | 23 | 42 | |||||
1918–1922 | 25 | 18 | 22 | ||||
1923–1927 | 22 | 31 | 9 | 47 | |||
1928–1932 | 18 | 15 | 25 | 45 | 70 | ||
1933–1937 | 30 | 24 | 25 | 22 | 50 | 42 | |
1938–1942 | 20 | 36 | 42 | 43 | 29 | 31 | 60–64 |
1943–1947 | 19 | 29 | 30 | 30 | 31 | 52 | 55–59 |
1948–1952 | 27 | 24 | 42 | 38 | 59 | 50–54 | |
1953–1957 | 35 | 46 | 39 | 49 | 45–49 | ||
1958–1962 | 33 | 32 | 37 | 40–44 | |||
1963–1967 | 33 | 43 | 35–39 | ||||
1968–1972 | 37 | 30–34 | |||||
25–29 | |||||||
Total | 22 | 28 | 29 | 38 | 37 | 44 | |
More highly educated women | |||||||
1913–1917 | 8 | 39 | |||||
1918–1922 | 22 | 50 | 61 | ||||
1923–1927 | 15 | 32 | 19 | 45 | |||
1928–1932 | 20 | 43 | 39 | 50 | 46 | ||
1933–1937 | 14 | 43 | 41 | 37 | 39 | 48 | |
1938–1942 | 18 | 26 | 52 | 46 | 43 | 62 | 60–64 |
1943–1947 | 29 | 40 | 52 | 44 | 52 | 61 | 55–59 |
1948–1952 | 37 | 36 | 48 | 40 | 50 | 50–54 | |
1953–1957 | 49 | 56 | 58 | 53 | 45–49 | ||
1958–1962 | 35 | 58 | 65 | 40–44 | |||
1963–1967 | 32 | 42 | 35–39 | ||||
1968–1972 | 40 | 30–34 | |||||
25–29 | |||||||
Total | 20 | 38 | 44 | 46 | 48 | 52 |
Odds ratios and significance levels from logistic regression analyses: one-factor models: study year 1.16 (p<0.001) and study year 1972 0.60 (p<0.001); age group 1.00 (p = 0.85) and age group 60–64 1.63 (p = 0.007); birth cohort 1.09 (p<0.001); education 1.36 (p<0.001). Multivariate model: study year 1.09 (p = 0.23); study year 1972 0.60 (p<0.001); education 1.22 (p = 0.19); interaction between study year and education 1.05 (0.26). Multivariate model: study year 1.09 (p = 0.06); study year 1972 0.60 (p<0.001); age group 0.92 (p = 0.11); age group 60–64 1.29 (p = 0.16); interaction between study year and age group 1.01 (p = 0.12).
For an explanation of educational level, see text.