In an article published in NEJM (2013) the authors studied 1655 patients enrolled in the Prostate Cancer Outcomes Study. All has localised prostate cancer and were aged 55-64 at treatment. Two thirds had surgery and the rest radiotherapy. At 2 and 5 years those having surgery were 5-6 times more likely to have incontinence and 2-3.5 times mire likely to have erectile dysfunction, but bowel urgency was 50-60% less likely. There were no differences in these outcomes at 15 years.