Cross‐cultural adaptation and validation of the neurogenic bladder symptom score for Spanish speakers.

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. [ABSTRACT FROM AUTHOR]