Birth cohort | Current smokers by year (%) | Age (years) | |||||
---|---|---|---|---|---|---|---|
1972 | 1977 | 1982 | 1987 | 1992 | 1997 | ||
Less highly educated men | |||||||
1913–1917 | 52 | 39 | |||||
1918–1922 | 57 | 42 | 38 | ||||
1923–1927 | 55 | 48 | 36 | 31 | |||
1928–1932 | 54 | 48 | 34 | 34 | 23 | ||
1933–1937 | 53 | 44 | 43 | 35 | 34 | 24 | |
1938–1942 | 54 | 44 | 35 | 40 | 33 | 29 | 60–64 |
1943–1947 | 53 | 53 | 46 | 40 | 43 | 31 | 55–59 |
1948–1952 | 52 | 49 | 49 | 32 | 42 | 50–54 | |
1953–1957 | 53 | 50 | 42 | 37 | 45–49 | ||
1958–1962 | 48 | 43 | 39 | 40–44 | |||
1963–1967 | 42 | 42 | 35–39 | ||||
1968–1972 | 48 | 30–34 | |||||
25–29 | |||||||
Total | 54 | 46 | 42 | 40 | 36 | 35 | |
More highly educated men | |||||||
1913–1917 | 48 | 28 | |||||
1918–1922 | 49 | 45 | 37 | ||||
1923–1927 | 53 | 38 | 30 | 26 | |||
1928–1932 | 46 | 40 | 38 | 34 | 23 | ||
1933–1937 | 37 | 38 | 42 | 26 | 24 | 23 | |
1938–1942 | 45 | 41 | 34 | 31 | 28 | 19 | 60–64 |
1943–1947 | 55 | 42 | 33 | 32 | 33 | 29 | 55–59 |
1948–1952 | 46 | 40 | 41 | 35 | 32 | 50–54 | |
1953–1957 | 39 | 33 | 37 | 34 | 45–49 | ||
1958–1962 | 27 | 31 | 29 | 40–44 | |||
1963–1967 | 29 | 13 | 35–39 | ||||
1968–1972 | 37 | 30–34 | |||||
25–29 | |||||||
Total | 48 | 40 | 37 | 32 | 31 | 27 |
Odds ratios and significance levels from logistic regression analyses: one-factor models: study year 0.85 (p<0.001); age group 0.93 (p<0.001); birth cohort 0.99 (p = 0.15); education 0.78 (p<0.001). Multivariate model: study year 0.91 (p<0.001); age group 0.98 (p = 0.10); education 0.78 (p<0.001); interaction between study year and age group 0.99 (p = 0.002). Multivariate model: study year 0.89 (p<0.001); age group 0.94 (p<0.001); education 0.84 (p = 0.003); interaction between study year and education 0.97 (p = 0.15).
For an explanation of educational level, see text.