Reliability and validity of the community balance and mobility scale in individuals with multiple sclerosis

This study aims to evaluate the reliability and validity of the Community Balance and Mobility Scale (CB&M) in people with multiple sclerosis (PwMS). A total of 65 PwMS (Expanded Disability Status Scale (EDSS) ≤ 5.5) were included in the study. Test-retest, internal consistency (item-total score correlation, Cronbach's alpha coefficient) intra-rater, and inter-rater reliability were investigated for the reliability of the CB&M. For intra-rater and inter-rater reliability, CB&M measurements of 34 PwMS were videotaped. The validity of the CB&M was assessed through criterion (predictive and concurrent validity) and construct validity. Construct validity was evaluated using hypothesis testing which included examining correlations with EDSS, Timed Up and Go Test (TUG), and Dynamic Gait Index (DGI). Test-retest reliability demonstrated a good to excellent correlation (ICC = 0.995, p