1 | 1969–93 | Age-cohort | Assigned risks of birth cohorts after 1957 decline sharply from 0.44 to 0 in the next three birth cohorts |
2 | 1969–98 | Age-cohort | Risks of birth cohorts after 1957 were assigned the risk of birth cohort 1953–57 |
3 | 1969–98 | Age-cohort | Risk of birth cohort 1958–62 was assigned 50% of the risk of birth cohort 1953–57 and birth cohorts beyond 1962 were assigned zero risk |
4 | 1969–98 | Age-period-cohort | Risk of birth cohort 1958–62 was assigned 50% of the risk of birth cohort 1953–57 and birth cohorts beyond 1962 were assigned zero risk |