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Rivista di Nefrologia e Urologia

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Minerva Urologica e Nefrologica 2016 Sep 13

Development and validation of the Italian version of the intermittent self catheterization questionnaire

Giorgio SCIVOLETTO 1, 2, Stefania MUSCO 3, Cosimo De NUNZIO 4, Giulio Del POPOLO 5 on behalf of the Gruppo di Studio sul Cateterismo

1 Spinal Unit, IRCCS Fondazione S. Lucia, Roma, Italy; 2 Spinal Rehabilitation (SpiRe) Lab, IRCCS Fondazione S. Lucia, Roma, Italy; 3 Spinal Unit, Montecatone Rehabilitation Institute, Imola, Italy; 4 Department of Urology, Sant’Andrea Hospital, Sapienza University of Rome, Rome, Italy; 5 Spinal Unit, Azienda Ospedaliera Universitaria Careggi, Firenze, Italy;

BACKGROUND: Intermittent self catheterization questionnaire (ISC-Q) is a questionnaire exploring four issues related to self-intermittent catheterization (ISC): ease of use, convenience, discreteness and psychological well-being. Aim of the study is to develop and validate the Italian version of the ISC-Q.
METHODS: Two independent translations of the ISC-Q were performed and compared by an expert committee. A back translation to English was made by a linguistic expert, blinded to the original version. Patients using ISC to void their bladder were from 19 different spinal cord units; questionnaires were examined anonymously in a single center. A subgroup of 47 patients repeated the test at 2 weeks distance and completed the Qualiveen questionnaire to assess the convergent validity of ISC-Q. The internal consistency was determined from Cronbach's α coefficient. Criterion validity was determined through the concurrent use of Qualiveen. Reliability was performed by Intraclass Correlation Coefficient and test-retest. The sensitivity was determined by the effect size based estimate for small change (ES) and Minimal Detectable Change 95 (MDC95).
RESULTS: 217 subjects (65.6% males, 34.4% females) were enrolled. Mean age: 43±10.1 years. Mean duration of ISC: 3.3±6.9 years. Cronbach’s α ranged from 0.79 to 0.81. Pearson correlation between the different parts of ISC-Q and total score ranged from 0.24 to 0.78. ICC values were higher than 0.9. Convergent validity was faint to null. ES ranged from 3.8 to 6 points. MDC95 ranged from 4.1 to 12.1.
CONCLUSIONS: The Italian ISC-Q has the same psychometric characteristics of the original questionnaire. ISC-Q is a valid, reliable and sensitive patient related outcome, specifically focused on ISC. our work provides a new validated measure for Italian patients to explore in future studies the role and impact of ISC.

lingua: Inglese


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