Abstract
ABSTRACTObjective:To cross-culturally adapt and check for the reliability and validity of the neurogenic bladder symptom score questionnaire to Brazilian Portuguese, in patients with spinal cord injury and multiple sclerosis.Materials and Methods:The questionnaire was culturally adapted according to international guidelines. The Brazilian version was applied in patients diagnosed with neurogenic bladder due to spinal cord injury or multiple sclerosis, twice in a range of 7 to 14 days. Psychometric properties were tested such as content validity, construct validity, internal consistency, and test-retest reliability.Results:Sixty-eight patients participated in the study. Good internal consistency of the Portuguese version was observed, with Cronbach α of 0.81. The test-retest reliability was also high, with an Intraclass Correlation Coefficient of 0.86 [0.76 - 0.92] (p<0.0001). In the construct validity, the Pearson Correlation revealed a moderate correlation between the Portuguese version of the NBSS and the Qualiveen-SF questionnaire (r = 0.66 [0.40-0.82]; p <0.0001).Conclusions:The process of cross-cultural adaptation and validation of the NBSS questionnaire for the Brazilian Portuguese in patients with neurogenic lower urinary tract dysfunction was concluded.
Highlights
Patients with neurogenic lower urinary tract dysfunction (NLUTD) constitute a population with several peculiarities
Several instruments were developed and recommended for evaluating lower urinary tract symptoms invarying clinical conditions [4, 5] but, until recently, Qualiveen [6] was the only specific questionnaire to evaluate patients with NLUTD. It was developed primarily for evaluation of the quality of life (QoL) aspects related to urinary tract symptoms in patients with traumatic spinal cord injury and was later validated for patients with Multiple Sclerosis [7]
Psychometric Properties According to recommendations for the process of cross-cultural adaptation [10], the following psychometric properties of the Neurogenic Bladder Symptom Score (NBSS) questionnaire were evaluated in our study: 1) Reliability, that refers to the degree to which the measurement is free from measurement error [15]: In this study, we evaluated the measurement properties, internal consistency and test-retest reliability
Summary
Patients with neurogenic lower urinary tract dysfunction (NLUTD) constitute a population with several peculiarities. Several instruments were developed and recommended for evaluating lower urinary tract symptoms invarying clinical conditions [4, 5] but, until recently, Qualiveen [6] was the only specific questionnaire to evaluate patients with NLUTD. It was developed primarily for evaluation of the QoL aspects related to urinary tract symptoms in patients with traumatic spinal cord injury and was later validated for patients with Multiple Sclerosis [7]
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