Outcomes
RECURRENCE, RECURRENCES
The primary outcome was recurrence-free interval (RFI), measured as the time from study entry to recurrence. For patients without recurrence at the time of analysis, the interval was censored at the date the patient was last known to be recurrence free. Recurrences at the first 3-month cystoscopy checkup were excluded. Secondary outcome measures included progression-free interval and overall survival (eMethods in 