I agree with John that we are all prone to ego-protective attitudes. We all tend to give salience to opinions and information that conform with our decisions, and discount those that do not (cognitive dissonance). I also think golfnooch raises some excellent points - I'm appalled that surgeons don't disclose statistics on failure rates, ED, incontinence, penile shrinkage, climacturia, stress incontinence, etc. Neither do I let ROs off the hook, or oncologists who offer hormone therapy. A lot of regret has to do with unreasonable expectations. I agree with him too that counseling ought to be part of the what's offered to the patient.
A
European study found that 19% of men suffer decision regret after surgery. An
Australian study found that 4% expressed treatment decision regret after external beam radiation therapy, but it was higher, 8.4%, for those who had hormone therapy with their RT, but only .5% among those who did not have hormone therapy.
Among men on ADT for metastatic disease,
23% expressed decision regret; higher for surgical castration than for chemical castration.
I haven't seen any stats on decision regret for AS, BT or SBRT.