Randomized trial comparing efficacy of pelvic floor muscle training with a digital therapeutic motion-based device to standard pelvic floor exercises for treatment of stress urinary incontinence (SUV trial): An all-virtual trial design.

Objective: To compare the efficacy of an Intravaginal Motion-Based Digital Health System (PDHS) compared to standardized Pelvic Floor Muscle Training (PFMT) for the treatment of stress or stress-predominant urinary incontinence (SUI).

Methods: This is a virtually conducted prospective randomized controlled trial. The primary outcomes are change in urinary incontinence episodes by 3-day bladder diary and change in Urogenital Distress Inventory-6 score, measured at 8 weeks. Secondary outcomes include: Patient Global Impression of Severity (PGI-S), PGI-Improvement (PGI-I), Pelvic Floor Distress Inventory-20(PFDI-20), Pelvic Floor Impact Questionnaire-7(PFIQ-7), Pelvic Organ Prolapse-Urinary Incontinence Sexual Function Questionnaire (PISQ-IR), Short Form-2 (SF-20), and assessment of adverse event (AE). Subjects are randomized 1:1 to an intervention group using leva PDHS for PFMT or a control group, using a home Kegel exercise program. Sample size needed to identify a 60% difference in incontinence episodes from baseline to 8 weeks post-randomization using alpha = 0.05, and a power of 0.8 is 156 subjects. To identify a 30% difference in the UDI-6 score from Baseline to Week 8 (alpha = 0.05, power = 0.8, using a one-tailed t-test) the needed sample size is 278, and allowing for an attrition rate of 15%, will require approximately 350 subjects, providing power to detect differences in both primary outcomes.

Results: Recruitment was initiated September 2020 and is on target to date. The trial is projected to be complete in 2021and is registered at clinicaltrials.govNCT04508153.

Conclusion: This novel virtual recruitment approach may provide more efficient recruitment of large numbers of subjects and provide input into the use of app-based management of pelvic floor interventions.