title: Translation and reliability and validity testing of a Japanese version of the Intermittent Self-Catheterization Questionnaire among disposable and reusable catheter users.
abstract: OBJECTIVE
  Quality of life in the context of intermittent self-catheterization varies depending on the type of catheter used. This study translated into Japanese, evaluated the feasibility, reliability, and validity of the Intermittent Self-Catheterization Questionnaire (ISC-Q) among users of both reusable and disposable catheters, and examined the differences of it between them.
  
  
  METHODS
  Seventy patients (age mean ± SD: 62.8 ± 17.7 years) completed the Japanese version of the ISC-Q (J-ISC-Q) at baseline and 4 weeks later. Spearman's correlation coefficients between the J-ISC-Q, and Qualiveen®and the SF-12 were used for the translated scale's discriminant and convergent validity. Reliability was evaluated by intraclass correlation coefficients (ICC), the Bland-Altman method, and Cronbach's alpha.
  
  
  RESULTS
  Participants answered all questionnaire items with no difficulties. Scores on the convenience domain were significantly higher among reusable compared to disposable catheter users (P = 0.039). The J-ISC-Q had significantly strong correlations with the Qualiveen®total scale (ρ = -0.712 to -0.237), but weak correlations with the SF-12 total scale (ρ = -0.231 to 0.474). Internal consistency was good (Cronbach's alphas > 0.706), and test-retest reliability was acceptable (ICC > 0.6) for the total scale and the four J-ISC-Q domains. The Bland-Altman analysis showed no systematic error between scores at baseline and 4 weeks later for the total scale and four domains of the J-ISC-Q.
  
  
  CONCLUSIONS
  The J-ISC-Q has acceptable reliability and validity for assessing both reusable and disposable catheter users, and can be used to promote tailored individualized interventions based on the impact of catheter use.
authors.affiliation: Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Mikako
authors.initials: M
authors.lastname: Yoshida
authors.affiliation: Department of Continence Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Igawa
authors.affiliation: Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Shiho
authors.initials: S
authors.lastname: Higashimura
authors.affiliation: Department of Urology, Tokyo Teishin Hospital, Tokyo, Japan.
authors.forename: Motofumi
authors.initials: M
authors.lastname: Suzuki
authors.affiliation: Department of Urology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Aya
authors.initials: A
authors.lastname: Niimi
authors.affiliation: Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Sanada
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D057928:Intermittent Urethral Catheterization; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D015203:Reproducibility of Results; D012648:Self Care; D011795:Surveys and Questionnaires; D014177:Translations
keywords: intermittent self-catheterization; quality of life; reusable catheter; scale reliability; scale validity