The American age-adjusted incidence rate for prostate cancer peaked in 1992 at 237.4 per 100,000 men with the advent of widespread PSA screening and has been falling fast ever since.
The age-adjusted mortality rate for prostate cancer peaked in 1993 — just a year after the incidence rate did — at 39.3 per 100,000 men. Explanations for the decline in the mortality rate range from improvements in treatment to American men having healthier diets. Advocates of screening say early detection has also had a hand in bending the mortality-rate curve.