Validation of the French version of the Wisconsin Quality of Life (WISQOL) questionnaire for patients with nephrolithiasis

  • Naeem Bhojani Division of Urology, University of Montreal, Montreal, Canada
  • Ghizlane Moussaoui Division of Urology, McGill University, Montreal, Canada
  • David-Dan Nguyen Division of Urology, McGill University, Montreal, Canada
  • Mei Juan Trudel Division of Urology, University of Montreal, Montreal, Canada
  • Garo-Shant Topouzian Division of Urology, University of Montreal, Montreal, Canada
  • Nare-Gacia Topouzian Division of Urology, University of Montreal, Montreal, Canada
  • Kristina L. Penniston Department of Urology, University of Wisconsin, Madison, Wisconsin
  • Sero Andonian Division of Urology, McGill University, Montreal, Canada
Keywords: Urolithiasis, Health related quality of life, assessment tool, questionnaire validation

Abstract

Introduction: The Wisconsin Stone Quality of Life (WISQOL) questionnaire has been recently developed to objectively assess quality of life (QOL) in patients with nephrolithiasis. However, a French version of the questionnaire was lacking. Therefore, the aim of the present study was to develop and validate the French version of this tool.

Methods: The French version of the WISQOL (F-WISQOL) was developed in a multistep process involving primary translation, back-translation, and pilot testing among a group of patients (n=12). Nephrolithiasis patients from two tertiary care institutions were recruited into this study and completed the following questionnaires: the medical history form and either the WISQOL or F-WISQOL. Internal consistency was assessed using Cronbach’s α, and inter-domain associations were evaluated using Spearman’s rank correlation (r). One-way ANOVA was used to compare scores from the two groups (WISQOL and F-WISQOL).

Results: A total of 210 patients were enrolled in this study: 68 in the WISQOL group and 148 in the F-WISQOL group. Internal consistency was high for all domains in both groups (F-WISQOL: 0.924–0.970; WISQOL: 0.888–0.965). No statistically significant difference was found between the two groups’ scores. Inter-domain association, measured by Spearman correlation, was moderate to very strong between all the domains in the F-WISQOL. Values ranged from r=0.676–0.915, with acceptable correlation between D1, D2, and D3, but weaker correlation between D4 (vitality) and the three other domains (r=0.676–0.729).

Conclusions: In the present study, the French version of the WISQOL questionnaire was validated at two academic institutions.

Published
2020-09-28
How to Cite
Bhojani, N., Moussaoui, G., Nguyen, D.-D., Trudel, M. J., Topouzian, G.-S., Topouzian, N.-G., Penniston, K. L., & Andonian, S. (2020). Validation of the French version of the Wisconsin Quality of Life (WISQOL) questionnaire for patients with nephrolithiasis. Canadian Urological Association Journal, 15(4), 227-31. https://doi.org/10.5489/cuaj.6552
Section
Original Research