Responsiveness of Pelvic Floor Distress Inventory (PFDI-20) and Pelvic Floor Impact Questionnaire (PFIQ-7) after pelvic floor muscle training in women with stress and mixed urinary incontinence.

Objective: To evaluate the responsiveness of Brazilian-Portuguese version of Pelvic Floor Distress Inventory-20 (PFDI-20) and Pelvic Floor Impact Questionnaire-7 (PFIQ-7) after pelvic floor muscle training (PFMT) in women with stress urinary incontinence (SUI) and mixed urinary incontinence (MUI).

Methods: This is an observational study with 72 women (51.8 ± 11.9SD years) with SUI (n = 33) and MUI (n = 39). Participants answered PFDI-20 and PFIQ-7 before and after PFMT, which consisted of a 12 weeks protocol supervised by a physiotherapist once a week with 30 min of a duration. Wilcoxon test, effect size (ES) and standardized response mean (SRM) were performed on baseline and after three months.

Results: We found a significant reduction in PFDI-20 and PFIQ-7 after PFMT (p < 0.001), except for Pelvic Organ Prolapses Distress Inventory (POPDI-16), Colorectal-Anal Impact Questionnaire (CRAIQ-7) and Pelvic Organ Prolapse Impact Questionnaire (POPIQ-7). The responsiveness of both questionnaires was considered moderate for PFDI-20 (ES = 0.49; SEM = 0.61; p < 0.0001) and PFIQ-7 (ES = 0.51; SEM = 0.52; p < 0.0001).

Conclusions: PFDI-20 and PFIQ-7 Brazilian Portuguese version presented moderate responsiveness in women with SUI and MUI who performed a PFMT.