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Validity, reliability, and responsiveness of Persian version of mini-balance evaluation system test among ambulatory
Farshad Molhemi1,2, Saeideh Monjezi1,3, Mohammad Mehravar1,3
1Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Background And Purpose:
Mini-Balance Evaluation Systems Test (mini-BESTest) is a widely used measure to assess balance impairments. This study aimed to assess the validity, reliability, responsiveness, and minimal clinically important change (MCIC) of the Persian mini-BESTest among ambulatory People with Multiple Sclerosis (PwMS).
Methods:
Fifty ambulatory PwMS participated in this study. Persian mini-BESTest validated against Berg Balance Scale (BBS) and Timed-Up and Go (TUG) with/without a cognitive task. To assess the reliability, the Persian mini-BESTest was re-administered for a sample of 30 participants after 1 week. Also, 32 PwMS were tested before and after a 4-week of balance and gait training to assess the responsiveness.
Results:
No floor/ceiling effect was found for the mini-BESTest total score. There were significant excellent correlations (p < .001) between mini-BESTest and BBS (r = 0.71), TUG (r = -0.76), and cognitive TUG (r = -0.73). No strong correlations were observed between the subscales (r = 0.37-0.55). Test-retest reliability and internal consistency of Persian mini-BESTest total score were excellent, with Intra-class Correlation Coefficient (ICC3,1 and Cronbach's alpha level of 0.89 and 0.80, respectively. The minimal detectable change was 4 points. The Persian mini-BESTest had acceptable responsiveness (AUC = 0.83), and MCIC was 5 points.
Conclusion:
The Persian mini-BESTest is a valid, reliable, and responsive measure of balance performance in Iranian ambulatory PwMS.
