Abstract
Background The Berg Balance Scale (BBS) is a balance measure commonly used for people with multiple sclerosis (MS). The Mini-BESTest is an alternative based on balance systems.
Objective The study objective was to compare the BBS and the Mini-BESTest for sensitivity to change, likelihood ratios for walking aid use and falls, and associations with clinical variables in people who have MS and are ambulatory.
Design This was a cohort study with measurements before and after exposure to 8 weeks of routine physical therapy intervention.
Methods For 52 participants who had a primary diagnosis of MS and who were independently mobile, with or without an aid, demographic details and a history of falls and near falls were collected. Participants completed the Mini-BESTest, Multiple Sclerosis Impact Scale-29, Multiple Sclerosis Walking Scale-12, BBS, Modified Fatigue Impact Scale, and Six-Minute Walk Test.
Results No participant started with a baseline Mini-BESTest maximum score of 28, whereas 38.5% (n=20) started with a baseline BBS maximum score of 56. Statistically significant changes in the Mini-BESTest score (X̅=5.31, SD=3.5) and the BBS score (X̅=1.4, SD=1.9) were demonstrated. Effect sizes for the Mini-BESTest and the BBS were 0.70 and 0.37, respectively; standard response means for the Mini-BESTest and the BBS were 1.52 and 0.74, respectively. Areas under the receiver operating characteristic curves for the Mini-BESTest and the BBS were 0.88 and 0.77, respectively, for detecting mobility device use and 0.88 and 0.75, respectively, for detecting self-reported near falls. The Mini-BESTest had a higher correlation for each secondary measure than did the BBS.
Limitations This study involved a sample of convenience; 61% of the participants did not use a walking aid. The order of testing was not randomized, and fall status was obtained through retrospective recall.
Conclusions The Mini-BESTest had a lower ceiling effect and higher values on responsiveness tests. These findings suggest that the Mini-BESTest may be better at detecting changes in balance in people who have MS, are ambulatory, and have relatively little walking disability.
Footnotes
Ms Ross, Dr Uszynski, and Dr Coote provided concept/idea/research design. Ms Ross, Dr Uszynski, Dr Hayes, Ms Casey, Ms Browne, and Dr Coote provided writing. Ms Ross provided data collection and participants. Dr Purtill, Dr Uszynski, Dr Hayes, Ms Browne, and Dr Coote provided data analysis. Ms Ross and Dr Coote provided project management, facilities/equipment, and institutional liaisons.
The Research Ethics Committee of St. James Hospital approved this study.
Ms Ross was the recipient of the Chartered Physiotherapists in Neurology and Gerontology Research Bursary.
- Received August 17, 2015.
- Accepted February 13, 2016.
- © 2016 American Physical Therapy Association