Responsiveness of Urogenital Distress Inventory-6 and Incontinence Impact Questionnaire-7 after pelvic floor muscle training and surgical treatment Abstract

Patricia NP IP, Rachel YK CHEUNG, Osanna YK WAN, Richard KW CHOY, Symphorosa SC CHAN
Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR
 
 

Introduction: Urinary incontinence (UI) and pelvic organ prolapse (POP) significantly impair quality of life (QoL). Pelvic floor muscle training (PFMT) is the first-line intervention. This study aims to evaluate the responsiveness of the Chinese version of Urogenital Distress Inventory-6 (UDI-6) and Incontinence Impact Questionnaire-7 (IIQ-7) after PFMT and surgical treatment in women with UI and/or POP.
Methods: Between April 2017 and December 2018, women who were referred to our urogynaecology clinic to undergo PFMT and/or surgery for UI and/or POP were recruited. They were instructed to perform three sets of pelvic floor muscle contractions per day. Women were followed up after 3 to 6 months. Women with moderate or severe urodynamic stress incontinence after PFMT were offered tension-free vaginal tape procedure. Women were asked to complete the UDI-6 for urinary symptoms and IIQ-7 for QoL before and after treatment. The responsiveness of UDI-6 and IIQ-7 were evaluated by effect size and standardised response mean.
Results: In 452 women who received PFMT, the most common diagnosis was UI (n=318, 70.4%), followed by POP (n=47, 10.4%), and concomitant UI and POP (n=87, 19.2%). 44 women underwent tension-free vaginal tape procedure after PFMT failed. After PFMT, the UDI-6 score improved from 38.9 to 29.4 (p<0.001) and the IIQ-7 score improved from 27.1 to 19.8 (p<0.001). After tension-free vaginal tape procedure, the UDI-6 score improved from 60.3 to 22.1 (p<l0.001) and the IIQ-7 score improved from 39.1 to 8.1 (p<0.001). Responsiveness to change in scores of UDI-6 and IIQ-7 was moderate and small, respectively.
Conclusion: The UDI-6 and IIQ-7 are modestly responsive to change after PFMT and tension-free vaginal tape procedure in women with UI and/or POP.
Hong Kong J Gynaecol Obstet Midwifery 2022; 22(1):21-8
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