Table 5

Smoking cessation by birth cohort, age (in diagonals), study year, and educational level in men

Birth cohort		Smoking cessation by year (%)		Age (years)
Birth cohort		1972	1977	Age (years)		1982	1987	1992	1997
Less highly educated men
1913–1917	34	49
1918–1922	29	49	56
1923–1927	32	40	51	57
1928–1932	24	37	48	49	65
1933–1937	21	35	35	48	44	62
1938–1942	20	37	42	37	51	54	60–64
1943–1947	17	25	36	40	37	50	55–59
1948–1952		21	28	31	47	42	50–54
1953–1957			25	23	20	40	45–49
1958–1962				18	37	21	40–44
1963–1967					24	26	35–39
1968–1972						21	30–34
							25–29
Total	25	37	40	39	43	43
Less highly educated men
1913–1917	38	62
1918–1922	38	46	52
1923–1927	26	48	58	63
1928–1932	32	39	51	45	63
1933–1937	34	43	40	53	55	59
1938–1942	28	37	43	49	60	70	60–64
1943–1947	17	33	43	50	43	51	55–59
1948–1952		31	30	34	43	51	50–54
1953–1957			34	39	27	44	45–49
1958–1962				34	34	40	40–44
1963–1967					23	65	35–49
1968–1972						20	30–34
							25–29
Total	30	42	43	46	45	51

Odds ratios and significance levels from logistic regression analyses: one-factor models: study year 1.08 (p<0.001); study year 1972 0.63 (p<0.001); age group 1.20 (p<0.001); birth cohort 0.93 (p<0.001); education 1.23 (p<0.001). Multivariate model: study year 1.24 (p<0.001); study year 1972 0.66 (p<0.001); birth cohort 0.84 (p<0.001); education 1.22 (p = 0.01); interaction between study year and education 1.01 (p = 0.65).
For an explanation of educational level, see text.