Objective: Multiple sclerosis (MS) is the most neurologic disease among individuals of 20-45 years. About 75% of MS patients report bladder problems that have a moderate-high impact on their life. The present study aimed to translate and determine the validity and reliability of the Persian version of ABSST questionnaire.

Methods: The standard validation process for preparing the Persian version of ABSST was performed by means of an expert committee. After a pilot study and confirming the harmonized translated form, we tested the final version of questionnaire on 40 patients with a definite diagnosis of MS symptoms, once at the baseline and another after two weeks in order to prevent recall-induced agreement. Test-retest reliability was calculated as Spearman's correlation coefficient. Also, content validity indices (CVIs), as well as internal consistency were analyzed in STATA.

Results: Forty participants with a mean age of 38.8 years were included in this study. Only 20% of them were male. The Persian version achieved a good internal consistency with a Cronbach-α value of 0.91, relatively similar to the original version. The coefficients for measuring the correlation between each item score with the total score of our questionnaire were between 0.58-0.89. This value confirmed an appropriate validity for the Persian version of ABSST. Regarding test-retest reliability assessment, total Spearman`s coefficient was 0.85; with 0.84 for the severity of symptoms and 0.87 for the impact of urologic disorders on patients` social life.

Conclusions: The current findings proved that this accurate questionnaire could be used to investigate urinary symptoms among Persian-speaking MS patients.