Psychometric PORPUS-scores (mean and standard deviation) at each time point. Baseline questionnaires plotted at month 0. The response rate for the completed PORPUS-P scores at each time point was: baseline (n = 437 ORP, n = 210 RARP), 3 months (n = 399 ORP, n = 230 RARP), 6 months (n = 342 ORP, n = 208 RARP), 9 months (n = 236 ORP, n = 164 RARP), 12 months (n = 223 ORP, n = 133 RARP), 15 months (n = 101 ORP, n = 63 RARP). Differences between RARP and ORP groups were statistically but not clinically significant at each time point (statistical significance indicated by the asterisk in the figure). PORPUS-P: Patient-Oriented Prostate Utility Scale-Psychometric; RARP: robot-assisted radical prostatectomy; ORP: open radical prostatectomy.