Portuguese validation of the Urinary Incontinence-Specific Quality-of-Life Instrument: I-QOL.
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.
Souza
Carolina Chaves Cunha
CC
Section of Urogynecology and Pelvic Surgery, Department of Gynecology, Federal University of São Paulo, São Paulo, Brazil. carolinaccunha@gmail.com
Rodrigues
Andrea Moura
AM
Ferreira
Cristina Eustáquia
CE
Fonseca
Eliana Suelotto Machado
ES
di Bella
Zsuzsanna Ilona Katalin Jármy
ZI
Girão
Manoel João Batista Castello
MJ
Sartori
Marair Gracio Ferreira
MG
Castro
Rodrigo Aquino
RA
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