title: Portuguese validation of the Urinary Incontinence-Specific Quality-of-Life Instrument: I-QOL.
abstract: OBJECTIVE
  Our objective was to translate and validate a Portuguese version of the Urinary Incontinence-Specific Quality-of-Life Instrument (I-QOL), a questionnaire that is widely used in clinical trials.
  
  
  METHODS
  Fifty patients completed the same questionnaire twice at a 2-week interval. During the first visit, we conducted a face-to-face interview and collected demographic data. The King's Health Questionnaire was completed during the same visit for comparisons.
  
  
  RESULTS
  The results showed that the Portuguese version of the I-QOL has very good psychometrics properties. Reliability was assessed by Cronbach's alpha (0.93), reproducibility was calculated through the intraclass correlation coefficient (0.88), construct validity was determined by comparing the I-QOL scores and King's Health scores, and discriminant validity was calculated by comparing the total I-QOL scores with measures of gravity.
  
  
  CONCLUSIONS
  We conclude that the Portuguese version of the I-QOL is a very good tool for the evaluation quality-of-life in women with urinary incontinence in Portuguese-speaking countries.
authors.affiliation: Section of Urogynecology and Pelvic Surgery, Department of Gynecology, Federal University of São Paulo, São Paulo, Brazil. carolinaccunha@gmail.com
authors.forename: Carolina Chaves Cunha
authors.initials: CC
authors.lastname: Souza
authors.forename: Andrea Moura
authors.initials: AM
authors.lastname: Rodrigues
authors.forename: Cristina Eustáquia
authors.initials: CE
authors.lastname: Ferreira
authors.forename: Eliana Suelotto Machado
authors.initials: ES
authors.lastname: Fonseca
authors.forename: Zsuzsanna Ilona Katalin Jármy
authors.initials: ZI
authors.lastname: di Bella
authors.forename: Manoel João Batista Castello
authors.initials: MJ
authors.lastname: Girão
authors.forename: Marair Gracio Ferreira
authors.initials: MG
authors.lastname: Sartori
authors.forename: Rodrigo Aquino
authors.initials: RA
authors.lastname: Castro
mesh_terms: D000328:Adult; D000368:Aged; D001938:Brazil; D005260:Female; D006801:Humans; D008875:Middle Aged; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014549:Urinary Incontinence / Q000175:diagnosis* / Q000523:psychology