Random-effects meta-analysis pooled sex ratios for indicators of any alcohol use within 5-year birth cohorts
| Birth cohort | Number of individual sex ratio estimates | Number of citations* | Number of countries | Random-effects pooled sex ratio (95% CI) |
|---|---|---|---|---|
| 1891–1910 | 23 | 7 | 6 | 2.2 (1.9 to 2.5) |
| 1911–1915 | 25 | 9 | 9 | 2.4 (2.1 to 2.8) |
| 1916–1920 | 34 | 9 | 9 | 2.4 (2.1 to 2.7) |
| 1921–1925 | 42 | 13 | 12 | 2.3 (2.1 to 2.6) |
| 1926–1930 | 47 | 14 | 12 | 2.4 (2.2 to 2.7) |
| 1931–1935 | 54 | 19 | 14 | 2.3 (2.1 to 2.6) |
| 1936–1940 | 56 | 19 | 15 | 2.3 (2.1 to 2.6) |
| 1941–1945 | 58 | 20 | 16 | 2.1 (1.9 to 2.3) |
| 1946–1950 | 60 | 19 | 18 | 2.0 (1.8 to 2.3) |
| 1951–1955 | 57 | 20 | 18 | 2.0 (1.8 to 2.3) |
| 1956–1960 | 56 | 21 | 18 | 2.0 (1.8 to 2.3) |
| 1961–1965 | 52 | 20 | 17 | 2.0 (1.8 to 2.3) |
| 1966–1970 | 48 | 18 | 18 | 2.0 (1.8 to 2.2) |
| 1971–1975 | 45 | 20 | 20 | 1.7 (1.5 to 1.9) |
| 1976–1980 | 45 | 20 | 21 | 1.5 (1.4 to 1.7) |
| 1981–1985 | 58 | 19 | 35 | 1.3 (1.2 to 1.4) |
| 1986–1990 | 40 | 11 | 30 | 1.2 (1.2 to 1.3) |
| 1991–2000 | 33 | 6 | 27 | 1.1 (1.1 to 1.2) |
*Represents the number of citations from which the individual estimates were extracted. Some citations reported results from separate repeated cross-sectional surveys, or separate surveys conducted in a number of different countries.