Table 2. Logarithm to base 2 of the ratio of slope in a given birth cohort to that in the adjacent older cohort determined only across those ages that both cohorts have in common.
| Birth Cohort | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1900–04 | 1905–09 | 1910–14 | 1915–19 | 1920–24 | 1925–29 | 1930–34 | 1935–39 | 1940–44 | 1945–49 | 1950–54 | 1955–59 | 1960–64 | 1965–69 | 1970–74 | 1975–79 | Mean | SE | Ratio
mean:SE |
||
| Males | ||||||||||||||||||||
| GB | 0.03 | 0.01 | -0.07 | -0.03 | -0.04 | -0.05 | -0.02 | -0.02 | -0.07 | -0.06 | -0.07 | -0.09 | -0.12 | -0.02 | -0.20 | -0.28 | -0.07 | 0.02 | -3.54 | |
| USA | -0.19 | -0.01 | -0.04 | -0.13 | 0.01 | -0.04 | -0.10 | -0.01 | -0.05 | -0.08 | -0.06 | 0.01 | -0.03 | -0.03 | -0.18 | -0.33 | -0.08 | 0.02 | -3.45 | |
| Australia | -1.39 | -0.70 | -0.29 | -0.19 | 0.13 | 0.07 | 0.07 | 0.07 | 0.07 | -0.03 | -0.12 | -0.07 | -0.23 | -0.01 | -0.16 | -0.19 | 0.10 | -1.83 | ||
| Females | ||||||||||||||||||||
| GB | 0.43 | -0.14 | -0.29 | -0.09 | -0.08 | -0.06 | -0.08 | -0.03 | -0.13 | -0.10 | -0.08 | -0.09 | -0.03 | -0.07 | -0.12 | -0.57 | -0.10 | 0.05 | -2.00 | |
| USA | 0.73 | -0.54 | -0.15 | 0.13 | 0.04 | -0.16 | 0.03 | -0.03 | -0.06 | -0.15 | -0.02 | 0.00 | 0.01 | -0.18 | -0.26 | -0.99 | -0.10 | 0.09 | -1.13 | |
| Australia | -0.28 | -1.00 | -0.45 | -0.26 | 0.28 | 0.10 | 0.22 | 0.04 | 0.06 | -0.13 | -0.03 | -0.19 | -0.11 | -0.09 | -0.83 | -0.18 | 0.09 | -1.93 | ||