Using patient-reported outcomes for technology assessment (TA) and quality improvement (QI) in prostate cancer brachytherapy
5139 Background: Despite their sensitivity, validity and increasing prominence in clinical reports, patient-reported outcomes have played little role in TA and QI. We used our validated disease-specific instrument to compare outcomes after alternative brachytherapy techniques for early prostate cancer, both experimental vs. standard technique and between implementations of the standard technique. Methods: One radiation oncologist performed experimental MRI-guided brachytherapy (MRB) on protocol and 2 performed standard ultrasound-guided brachytherapy (USB1 and USB2). We prospectively measured urinary and bowel function of 237 men before brachytherapy and at 1, 3 and 12 months after treatment. Each symptom index is scored from 0 (no dysfunction) to 100 (maximum dysfunction). We report outcomes both as mean change in scale score from baseline and as the distribution of functional categories, grouped by pretreatment functional level: normal, intermediate, and poor (severe dysfunction). Results: Among all patients, MRB caused less urinary obstruction/irritation at 3 months after treatment than ultrasound-guided brachytherapy (mean score change 9.2 vs. 23.6, p<.001). Significant differences in outcome also existed between USB1 and USB2 (19.5 vs. 29.0, p=.01). When baseline function was normal, 15% of MRB patients reported severe 3-month dysfunction, compared to 50% of USB1 and 71% of USB2 patients ( Table ). Outcomes of patients with pretreatment urinary dysfunction differed less. Preliminary results documenting inferior outcomes prompted modification of the USB2 brachytherapy technique, producing a trend toward improved outcomes in small patient numbers (mean score change: 30.4 vs. 22.8, p=.25). Bowel symptom outcomes varied less. Conclusions: Patient-reported outcomes can provide sensitive and valid indicators of TA and QI that may contribute to optimal patient-centered care. [Table: see text] No significant financial relationships to disclose.