Table 3.
Birth cohort effects from age-cohort (AC) models and calendar period effects from age-period (AP) models presented as IRR (incidence rate ratios) with 95 % confidence intervals in comparison with the respective reference (REF) birth or period cohort. Note that period effects are inherent in the cohort effects of the AC model and vice versa
| Swedish men | Danish men | Swedish women | Danish women | |
|---|---|---|---|---|
| IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | |
| Birth cohort | ||||
| Birth cohort effects from age-cohort (AC) models | ||||
| 1889–1896 | 1.42* (1.05 to 1.91) | 0.85 (0.56 to 1.31) | 3.13* (2.30 to 4.27) | 1.59* (1.03 to 2.45) |
| 1893–1900 | 1.61* (1.27 to 2.04) | 0.77 (0.55 to 1.08) | 3.10* (2.31 to 4.15) | 1.62* (1.09 to 2.40) |
| 1897–1904 | 1.56* (1.24 to 1.96) | 0.79 (0.58 to 1.08) | 3.10* (2.32 to 4.14) | 1.67* (1.13 to 2.47) |
| 1901–1908 | 1.57* (1.26 to 1.97) | 0.86 (0.63 to 1.16) | 3.00* (2.24 to 4.00) | 1.66* (1.13 to 2.44) |
| 1905–1912 | 1.55* (1.24 to 1.94) | 0.87 (0.65 to 1.18) | 2.92* (2.19 to 3.90) | 1.66* (1.13 to 2.44) |
| 1909–1916 | 1.58* (1.26 to 1.97) | 0.92 (0.69 to 1.24) | 2.84* (2.13 to 3.79) | 1.63* (1.11 to 2.40) |
| 1913–1920 | 1.49* (1.19 to 1.86) | 0.93 (0.69 to 1.25) | 2.62* (1.97 to 3.50) | 1.59* (1.08 to 2.34) |
| 1917–1924 | 1.46 *(1.17 to 1.83) | 0.95 (0.71 to 1.28) | 2.43* (1.82 to 3.24) | 1.54* (1.05 to 2.26) |
| 1921–1928 | 1.43* (1.14 to 1.78) | 0.92 (0.68 to 1.23) | 2.33* (1.75 to 3.11) | 1.52* (1.03 to 2.23) |
| 1925–1932 | 1.35* (1.09 to 1.69) | 0.82 (0.61 to 1.10) | 2.14* (1.61 to 2.86) | 1.45 (0.99 to 2.12) |
| 1929–1936 | 1.28* (1.02 to 1.60) | 0.87 (0.65 to 1.17) | 2.04* (1.53 to 2.72) | 1.32 (0.90 to 1.93) |
| 1933–1940 | 1.20 (0.96 to 1.50) | 0.87 (0.65 to 1.16) | 1.74* (1.31 to 2.32) | 1.20 (0.82 to 1.75) |
| 1937–1944 | 1.11 (0.89 to 1.38) | 0.86 (0.64 to 1.14) | 1.54* (1.15 to 2.06) | 1.06 (0.72 to 1.56) |
| 1941–1948 | 1.10 (0.88 to 1.37) | 0.93 (0.69 to 1.23) | 1.49* (1.12 to 1.99) | 1.07 (0.73 to 1.57) |
| 1945–1952 | 1.09 (0.87 to 1.37) | 1.001 (0.75 to 1.34) | 1.35* (1.01 to 1.81) | 1.07 (0.72 to 1.57) |
| 1949–1956 | 1.07 (0.85 to 1.36) | 1.14 (0.85 to 1.55) | 1.16 (0.85 to 1.58) | 1.12 (0.75 to 1.69) |
| 1953–1960 | 1 (REF) | 1 (REF) | 1 (REF) | 1 (REF) |
| Calendar period | ||||
| Calendar period effect from age-period (AP) models | ||||
| 1987–1990 | 1.12* (1.08 to 1.16) | 0.95 (0.90 to 1.004) | 1.30* (1.26 to 1.35) | 1.16* (1.11 to 1.20) |
| 1991–1994 | 1.15* (1.11 to 1.18) | 1.05 (0.99 to 1.10) | 1.28* (1.24 to 1.33) | 1.21* (1.16 to 1.25) |
| 1995–1998 | 1.15* (1.12 to 1.19) | 1.08*(1.02 to 1.14) | 1.22* (1.18 to 1.26) | 1.20* (1.16 to 1.25) |
| 1999–2002 | 1.03* (1.002 to 1.07) | 1.11*(1.05 to 1.17) | 1.10* (1.06 to 1.14) | 1.17* (1.13 to 1.22) |
| 2003–2006 | 1.04* (1.004 to 1.07) | 1.07*(1.01 to 1.12) | 1.05* (1.02 to 1.09) | 1.11* (1.07 to 1.15) |
| 2007–2010 | 1 (REF) | 1 (REF) | 1 (REF) | 1 (REF) |
*A statistically significant difference from reference birth cohort (born 1953–1960) or period (year 2007–2010)