1.   In a statement issued Friday, Young said he wanted to go public with his diagnosis partly to encourage middle-aged and older men to have regular prostate screenings.

2.   Study participants will receive prostate screening, any necessary follow-ups, biopsy if recommended and necessary medical attention, once enrolled and accepted.

3.   The JAMA study is the latest to enter the controversy over prostate screening.

4.   There has never been a study showing that, given the price and relatively few problems found, scans are socially cost effective, unlike mammograms and prostate screening.