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Cross-cultural adaptation and validation of the neurogenic bladder symptom score for Spanish speakers
J Moreno-Palacios1, P Castro-Nuñez1, B Padilla-Fernández2
1Urology Department, Unidad Medica de Alta Especialidad, Hospital de Especialidades "Dr. Bernardo Sepúlveda Gutiérrez", IMSS, Ciudad de México, México.
Aim:
To perform a cross-cultural adaptation and validation of the Neurogenic Bladder Symptom Score (NBSS) to Spanish in patients with neurogenic lower urinary tract dysfunction.
Materials And Methods:
The questionnaire was culturally adapted according to international guidelines. It was applied, twice in a range of 14-28 days. Psychometric properties were tested such as content validity, construct validity, internal consistency, and test-retest reliability.
Results:
A total of 82 patients between 18 and 78 years old (mean age of 43.9) participated in the study, and completed the first NBSS assessment; only 39 (32.19%) performed the test-retest study. The internal consistency was tested by Cronbach α with a result of 0.86 (95% CI, 0.81-0.90). The reliability was tested by interclass correlation coefficient with a result of 0.91 [0.87-0.95] (p < 0.0001). The construct validity was tested by Pearson correlation between NBSS and Qualiveen-SF, which showed a moderate correlation with a result of 0.57 (p < 0.0001). One-way analysis of variance with trend analysis demonstrated that patients who reported having a more severe problem with their bladder function had a higher NBSS total score (p < 0.001).
Conclusion:
The results of this study demonstrated that the Spanish version of the NBSS has a good internal consistency and reliability, proving its applicability.
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