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Background: Pelvic floor muscle training (PFMT) is first-line treatment for urinary incontinence (UI) in women. Self-management via a mobile app is a new cost-effective method for PFMT delivery. This study analyzes factors associated with improvement among app users.

Methods: A pragmatic observational study in a community setting. Upon downloading the app Tät®, users answered questions regarding their age, education, residence, and UI symptoms. After 3 months, users answered follow-up questions regarding symptoms and frequency of training and app usage, and the validated Patient Global Impression of Improvement (PGI-I) questionnaire. Only non-pregnant, non-postpartum adult women with UI who answered the PGI-I questionnaire were included. Multivariate logistic regression was used to analyze possible associations between these factors with any improvement and with great improvement according to the PGI-I. The models were adjusted for age.

Results: The study included 2,153 participants who had completed self-management, that is, 11.5% of eligible women who completed the baseline questionnaire. Of these participants, 65.6% reported improvement of UI. Any improvement was associated with age, frequency of PFMT, and app use, accounting for 27.9% of variability (Nagelkerke R2). Lower incontinence severity, frequency of PFMT, and app use were associated with great improvement.

Conclusion: Self-management of urinary incontinence is easily accessible to many women and improvement rates are comparable with other forms of PFMT. Demographic factors and incontinence severity showed no or incongruent association, whereas regular PFMT and app use predicted any and great improvement. App use showed an additional effect beyond frequency of training.