Cross-cultural adaptation and measurement property analysis of the Brazilian Portuguese version of the Three Incontinence Questionnaire

Author(s)

Rubio Alem, Michele Elisabete ^[1] ; da Silva, Jordana Barbosa ^[1] ; Sartorato Beleza, Ana Carolina ^[1] ; Chaves, Thais Cristina ^[2] ; Driusso, Patricia ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Phys Therapy Dept, Womens Hlth Res Lab, Rodovia Washington Luis, 235 Km, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Phys Therapy Dept, Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: INTERNATIONAL UROGYNECOLOGY JOURNAL; JAN 2022.
• Web of Science Citations: 0

Abstract

Introduction and hypothesis The differential diagnosis of urinary symptoms may allow health professionals to establish a therapeutic objective and to choose the appropriate treatment for the patient's complaint. The aim of this study was to cross-culturally adapt the Three Incontinence Questionnaire (3IQ) into Brazilian Portuguese (3IQ-Br) and to analyze test-retest reliability, construct, and criterion validity in women. Methods The cross-cultural adaptation of the 3IQ-Br included forward-translation, back-translation, and consensus among an expert committee. Participants with and without urinary incontinence (UI) completed the 3IQ-Br, King's Health Questionnaire (KHQ), and Questionnaire for Female Urinary Incontinence Diagnosis (QUID-Br). Only women with UI answered 3IQ-Br after 7-10 days. Test-retest reliability and construct validity were analyzed using the Cohen linear kappa (k). The 3IQ-Br accuracy was analyzed using the area under the curve (AUC) of the receiver-operating characteristic (ROC) curve, considering the sensitivity and specificity to correctly classify women with and without UI. Results The reliability of each question from the 3IQ-Br was considered substantial in the test-retest. The agreement among 3IQ-Br, QUID-Br, and KHQ was almost perfect for UI diagnosis (k > 0.8). The 3IQ-Br was considered to have good accuracy in distinguishing women with UI considering the KHQ (AUC 0.83, 95% confidence interval {[}CI] 0.78 to 0.87, p < 0.001), and fair to the QUID-Br (AUC 0.73, 95% CI 0.68 to 0.78; p < 0.001). Conclusions The results of this study showed that this version of the 3IQ-Br has acceptable measurement properties for identifying and differentiating UI symptoms in Brazilian women. (AU)

• FAPESP's process: 18/26718-9 - Different weekly frequencies of pelvic floor muscle training for women with stress urinary incontinence: a randomized controlled trial with economic evaluation
• Grantee: Patricia Driusso
• Support Opportunities: Regular Research Grants