Supplementary Material for: Patient Compliance in Assessing Electronic Patient-Reported Outcome Measures after Urologic Surgery

<b><i>Introduction:</i></b> This study aimed to assess patient compliance with a newly established electronic patient-reported outcome measure (ePROM) system after urologic surgery and to identify influencing factors. <b><i>Methods:</i></b> Digital surveys were provided to patients undergoing cystectomy, radical or partial nephrectomy, or transurethral resection of bladder tumor via a newly established ePROM system. Participants received a baseline survey preoperatively and several follow-up surveys postoperatively. Multivariable regression analysis was performed to identify factors predicting compliance. <b><i>Results:</i></b> Of <i>N</i> = 435 eligible patients, <i>n</i> = 338 completed the baseline survey (78.0%). Patients who did not participate were significantly more likely male (<i>p</i> = 0.004) and older than 70 years (<i>p</i> = 0.005). Overall, 206/337 patients (61.3%) completed the survey at 1-month, 167/312 (53.5%) at 3-month, and 142/276 (51.4%) at 6-month follow-up. Lower baseline quality of life (odds ratio: 2.27; <i>p</i> = 0.004) was a significant predictor for dropout at 1-month follow-up. Low educational level was significantly associated with low compliance at 3- (OR: 1.92; <i>p</i> = 0.01) and 6-month follow-up (OR: 2.88; <i>p</i> &lt; 0.001). <b><i>Conclusion:</i></b> Acceptable compliance rates can be achieved with ePROMs following urologic surgery. Several factors influence compliance and should be considered when setting-up ePROM surveys.