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Quality of life in patients with kidney stones: translation and validation of the Spanish Wisconsin Stone Quality of Life Questionnaire

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Abstract

The Spanish version of the Wisconsin Stone Quality of Life (WISQOL) questionnaire was developed and validated. A double-back translation of the WISQOL was conducted and syntactic amendments were made, resulting in the Spanish version of the WISQOL (S-WISQOL) which then went through a readability analysis. Stone formers from two hospitals in Mexico (Merida and Monterrey) filled in the S-WISQOL and the Short Form 36 (SF36). Convergent validity was assessed by the correlation of both questionnaires. Internal consistency was evaluated by Cronbach’s α, and external validity by comparing between centers. The impact of clinical settings on patients’ health-related quality of life (HRQOL) scores was tested. Each hospital’s institutional review board approved the project and informed consent was obtained from all participants. A total of 87 Spanish-speakers patients completed the S-WISQOL and SF36 and a good correlation was found between both (r = 0.75, p < 0.001). S-WISQOL readability was rated as “easy”. Patients from Merida had longer median duration (years) with stones, more stone-related procedures, and hospitalizations, and scored lower on WISQOL (p = 0.006). Internal consistency was good as Cronbach’s α coefficients ranged between acceptable and excellent. Stone-related admissions and duration of stones were inversely correlated with S-WISQOL score (− 0.254 and − 0.283, respectively; p < 0.005) but not to SF36. The S-WISQOL is an internally consistent, reliable, and valid instrument to assess HRQOL in Spanish-speaking patients with kidney stones. The S-WISQOL is generalizable as demonstrated by good external validity among centers. S-WISQOL scores can be added as an outcome for kidney stone treatments.

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Acknowledgements

No competing financial interests exist. Partial results of this paper were presented in the 36th World Congress of Endourology in Paris in 2018.

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Authors and Affiliations

  1. Department of Urology, Hospital Regional de Alta Especialidad de La Península de Yucatán, Calle 7, No. 433 Col. Altabrisa, CP 97133, Mérida, Yucatán, Mexico

    Mario Basulto-Martínez, Iván A. Velueta-Martínez & Juan P. Flores-Tapia

  2. Tecnológico de Monterrey, Escuela de Medicina y Ciencias de La Salud. Av. Ignacio Morones, Prieto 3000, Sertoma, 64710, Monterrey, Nuevo León, Mexico

    Daniel Olvera-Posada & María D. Guerrero-Putz

  3. Department of Urology, Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”. Av, Vasco de Quiroga 15, Col. Belisario Domínguez Sección XVI, Delegación Tlalpan, 14080, Mexico City, Mexico

    Carlos Méndez-Probst

  4. Department of Urology, School of Medicine and Public Health, University of Wisconsin, 685 Highland Avenue, 3258 MFCB, Madison, WI, 53705-2281, USA

    Kristina Penniston

  5. School of Medicine, Universidad Nacional Autónoma de México, Av. Universidad 3000, C.U., Coyoacán, 04510, Mexico City, Mexico

    Alexander Heinze

Authors
  1. Mario Basulto-Martínez
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  2. Daniel Olvera-Posada
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  3. Iván A. Velueta-Martínez
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  4. Carlos Méndez-Probst
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  5. Juan P. Flores-Tapia
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  6. Kristina Penniston
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  7. María D. Guerrero-Putz
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  8. Alexander Heinze
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Contributions

MB-M: protocol/project development, data collection or management, data analysis and manuscript writing/editing. JPF-T: protocol/project development and data collection or management. MDG-P: protocol/project development and data collection or management. AH: protocol/project development and data analysis. CM-P: protocol/project development, and data analysis. DO-P: protocol/project development, data collection or management, data analysis and manuscript writing/editing. KP: protocol/project development, data analysis and manuscript writing/editing. IAV-M: protocol/project development and data collection or management.

Corresponding author

Correspondence to Mario Basulto-Martínez.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the Institutional Research and Ethics Committee (Reference Number: 2017–012) of the HRAEPY and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.

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Basulto-Martínez, M., Olvera-Posada, D., Velueta-Martínez, I.A. et al. Quality of life in patients with kidney stones: translation and validation of the Spanish Wisconsin Stone Quality of Life Questionnaire. Urolithiasis 48, 419–424 (2020). https://doi.org/10.1007/s00240-020-01192-9

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  • DOI: https://doi.org/10.1007/s00240-020-01192-9

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