I've long been suspicious of "regret" as an endpoint. This is principally because decisional regret is predicated on the (improbable) understanding of outcome under the counterfactual. New paper shows regret is basically explained by "I had a bad outcome". pubmed.ncbi.nlm.nih.gov/42429300/
Function drives 1-year decision regret in radical prostatectomy: a multicentre prospective study - PubMed
Surgical decision regret after RP is primarily driven by postoperative functional outcomes rather than oncological results or surgical approach. Optimising functional recovery and managing patient exp...
pubmed.ncbi.nlm.nih.gov