Urine-based Molecular Testing vs Cystoscopy for Surveillance of Nonmuscle Invasive Bladder Cancer (NMIBC)

Patient preference will be assessed based on the Preference Questionnaire (PQ) after completion of the study cross-over period (after both methods of testing have been experienced).

Patient satisfaction will be assessed based on the Satisfaction Questionnaire (SQ) after completion of each test at 3 and 6 months.

The European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire - Non-Muscle-Invasive Bladder Cancer (EORTC NMIBC-24) will be used to assess Health-related quality of life. The questionnaire consists of 24 items scored on a four-point Likert scale ranging from 1 (not at all) to 4 (very much), with the exception of the global health status items, which employ a seven-point scale ranging from 1 (very poor) to 7 (excellent). Higher scores are interpreted as more symptom burden, with exception of the sexual function and sexual enjoyment sections, where higher scores represent better functioning.

Health-related quality of life will be assessed based on the Fear of Cancer Recurrence Inventory- Short Form (FCRI-SF) at baseline, 3 months (within 1 week of test), and 6 months (within 1 week of test). The nine-item FCRI evaluates the presence and severity of intrusive thoughts associated with FCR. Each item is rated on a Likert scale ranging from 0 ("not at all" or "never") to 4 ("a great deal' or "all the time"). A higher score indicates higher levels of FCR.

Assessed by patient responses to questions about missed work and time missed from usual activities.

Error rate for CxBladder is defined as the proportion of patients who have a negative CxBladder at 3 months but have a recurrence identified on cystoscopy at 6 months for patients in arm A. The error rate for cystoscopy is defined as the proportion of patients who have a negative cystoscopy at 3 months but have a positive CxBladder at 6 months that is subsequently confirmed by cystoscopy for patients in arm B.