What is the cumulative risk to age 74?

This is the risk to an "average" individal, given current cancer rates, of developing a cancer before his or her 75th birthday (assuming survival to that date). It is usually expressed as a percentage.

Note that cumulative risk takes no account of differences in risk factors between individuals or of possible future changes in incidence, but is based on the average Irish male or female and the current incidence rates for the population.

Note also that a substantial number of cancers occur in individuals ages 75 years or more. As the normal life expectancy in Ireland is close to 75 years, the cumulative risk to age 74 is a good approximation of the "lifetime risk" of developing a cancer.