Inness Elizabeth L, Howe Jo-Anne, Niechwiej-Szwedo Ewa, Jaglal Susan B, McIlroy William E, Verrier Molly C
Elizabeth L. Inness, BScPT, MSc: Toronto Rehabilitation Institute, Toronto, Ontario; Department of Physical Therapy, Faculty of Medicine, University of Toronto, Toronto, Ontario.
Physiother Can. 2011 Spring;63(2):199-208. doi: 10.3138/ptc.2009-45. Epub 2011 Apr 13.
To further investigate the construct validity of the Community Balance and Mobility Scale (CB&M), developed for ambulatory individuals with traumatic brain injury (TBI).
A convenience sample of 35 patients with TBI (13 in-patients, 22 outpatients) was recruited. Analyses included a comparison of CB&M and Berg Balance Scale (BBS) admission and change scores and associations between the CB&M and measures of postural sway, gait, and dynamic stability; the Community Integration Questionnaire (CIQ); and the Activities-specific Balance Confidence (ABC) Scale.
Mean admission scores on the BBS and the CB&M were 53.6/56 (SD=4.3) and 57.8/96 (SD=23.3) respectively. Significant correlations were demonstrated between the CB&M and spatiotemporal measures of gait, including walking velocity, step length, step width, and step time; measures of dynamic stability, including variability in step length and step time; and the ABC (p<0.05). Significant correlations between the CB&M and CIQ were revealed with a larger data set (n=47 outpatients) combined from previous phases of research.
In patients with TBI, the CB&M is less susceptible to a ceiling effect than the BBS. The construct validity of the CB&M was supported, demonstrating associations with laboratory measures of dynamic stability, measures of community integration, and balance confidence.
进一步研究为脑外伤（TBI）后能行走的个体所开发的社区平衡与移动性量表（CB&M）的结构效度。
招募了35例TBI患者的便利样本（13例住院患者，22例门诊患者）。分析内容包括比较CB&M和伯格平衡量表（BBS）的入院时得分及变化得分，以及CB&M与姿势摆动、步态和动态稳定性测量指标之间的关联；社区融入问卷（CIQ）；以及特定活动平衡信心（ABC）量表。
BBS和CB&M的平均入院时得分分别为53.6/56（标准差=4.3）和57.8/96（标准差=23.3）。CB&M与步态的时空测量指标（包括步行速度、步长、步宽和步时）、动态稳定性测量指标（包括步长和步时的变异性）以及ABC之间存在显著相关性（p<0.05）。结合之前研究阶段的更大数据集（n=47例门诊患者），发现CB&M与CIQ之间存在显著相关性。
在TBI患者中，CB&M比BBS更不易受到天花板效应的影响。CB&M的结构效度得到了支持，表明其与动态稳定性的实验室测量指标、社区融入测量指标以及平衡信心之间存在关联。
