The main reason for the increase in the number of prostate cancers diagnosed is the introduction of the Prostate Specific Antigen test in the early 1990s, although this increase was on top of an existing underlying trend of more cases.
Alongside this increase in prostate cancers diagnosed the mortality rate from prostate cancer has continued to decline in recent years. The five-year survival has increased from 42.4 per cent. between 1986 and 1990, to 74.4 per cent. between 1999 and 2003.