References in periodicals archive ?
Using single year-of-age data it is possible to compute cumulated cohort rates for breast cancer within age groups, and cumulated cohort rates for some risk factors.
For example, the proportion of the 1993 cohort included in a benefit peaked between the ages of four and five, while for the 2001 cohort rates of receipt peaked between the ages of one and two, and for the 2005 cohort it appears to have peaked before age one.
This would allow an examination of both period and cohort rates by parity over time.