Translation and validation of the Portuguese version of the International Consultation on Incontinence Questionnaire (ICIQ) Bladder Diary

• Published in: International Urogynecology Journal Vol. 33; no. 11; pp. 3061 - 3066
• Main Authors: Pereira e Silva, Ricardo, Lopes, Filipe, Fernandes, Miguel, Polido, Joana, Ponte, Carolina, Esteves, André, Uren, Alan, dos Reis, José Palma
• Format: Journal Article
• Language: English
• Published: Cham Springer Nature 01.11.2022; Springer International Publishing; Springer Nature B.V
• Subjects: Adult; Bladder; Bladder diary; Diaries; Female; Gynecology; Humans; Language; Lower urinary tract symptoms; Lower Urinary Tract Symptoms - diagnosis; Male; Medicine; Medicine & Public Health; Original Article; overactive; Portugal; Portuguese language; Quality of Life; Questionnaires; Referral and Consultation; Reproducibility of Results; Surveys and Questionnaires; Urinary Bladder; Urinary Bladder, Overactive - diagnosis; Urinary incontinence; Urinary Incontinence - diagnosis; Urology; Validation studies; Validity; Portugal; Bladder diary; Urinary incontinence; Surveys and questionnaires; Lower urinary tract symptoms; Urinary bladder, overactive; Patient-reported outcome measures
• ISSN: 0937-3462; 1433-3023; 1433-3023
• DOI: 10.1007/s00192-021-05037-w

© The International Urogynecological Association 2021 Introduction and hypothesis: The International Consultation on Incontinence Questionnaire (ICIQ) Bladder Diary (BD) is a standardized and validated diary, developed in the English language, designed to assess lower urinary tract symptoms (LUTS) in men and women. This study reports the translation, cross-cultural adaptation and validation process of this diary to the Portuguese language. Methods: After translation and back-translation of the ICIQ-BD to Portuguese, 140 urologic patients were asked to fill in this 3-day diary as well as the Overactive Bladder questionnaire Short Form (OABqSF) and a questionnaire evaluating the difficulties in filling out the ICIQ-BD. A subset of 60 patients filled out a second diary with/without LUTS treatment in between (30 patients in each group). In addition, content validity, internal consistency, criterion and construct validity were tested. Results: The Portuguese version of the ICIQ-BD showed adequate internal consistency (Cronbach's alpha of 0.78), and patients reported few difficulties in filling out this tool, answering most commonly 1 on a 1-6 scale of difficulty. Excellent test-retest reliability and responsiveness of the diary were observed when comparing the first diary to a second completed 2-6 weeks later. Criterion validity was also confirmed, given the good correlation with the OABqSF (Pearson's 0.386-0.447). Finally, construct validity was established through statistically significant concordance between data obtained in the BD with generally accepted theories. Conclusion: The present version of the ICIQ-BD is the first bladder diary successfully validated in the Portuguese language. It is a suitable and standardized tool for scientific research and diagnostic assessment of LUTS in adult men and women.