The aim of this study is to validate the International Consultation on Incontinence Questionnaire-Vaginal Symptoms (ICIQ-VS) in Portuguese. Two hundred four women (108 symptomatic, 94 asymptomatic, and two with no data) with mean age of 55.4 years received a Portuguese version of the ICIQ-VS. Clinical data and pelvic organ prolapse quantification index (POP-Q) were obtained. Retest was performed 3 weeks later. Responsiveness was assessed after 20 weeks of postsurgical follow-up. Overall, most patients presented POP-Q > 2. ICIQ-VS demonstrated good psychometric properties (validity, reliability and responsiveness). The test-retest reliability was moderate to excellent for all questions. The construct validation distinguished differences in ICIQ-VS scores between symptomatic (ICIQ-VS5a > 0) and asymptomatic (ICIQ-VS5a = 0) women. ICIQ-VS was highly responsive to surgical treatment and discriminated between levels of change in the vaginal symptoms score, sexual matters score, quality-of-life score, and POP-Q. The Portuguese version of ICIQ-VS was successfully validated.
The results showed moderate concurrent validity, strong internal consistency and high responsiveness for KHQ, indicating that it is suitable for measuring outcomes in clinical trials among female patients with stress urinary incontinence.
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