The Functional Balance Ability Measure: A Measure of Balance Across the Spectrum of Functional Mobility in Persons Post-Stroke.
The Functional Balance Ability Measure: A Measure of Balance Across the Spectrum of Functional Mobility in Persons Post-Stroke.
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DOI：
10.1016/j.arrct.2023.100296
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发表时间：
2023-12
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确定结合了贝格平衡量表（BBS）和功能性步态评估（FGA）（称为功能性平衡能力测量（FBAM））项目的仪器的测量属性是否支持测量功能性移动范围内的平衡。回顾性队列。项目级数据来自档案研究数据库。患有慢性卒中（≥6个月）的非卧床个体（N=93，BBS=50 [29-56]，FGA=16 [0-30]，Fugl-Meyer下肢评估=27 [14-34]，自选步行速度=0.4±0.2 m/s，平均年龄± SD，61.7± 11.3岁; 30.1%女性）。不适用因用残差的主成分分析（PCA）评价了一维性。FBAM评级规模的特点，项目层次结构，项目和人的配合，和人的分离进行了调查，使用Andrich评级量表模型。PCA结果表明，FBAM是足够的一维。评定量表结构是适当的，没有修改原来的BBS和FGA评分系统。项目层次与临床和理论预测一致（最难的项目：FGA-支撑基础狭窄的步态，最简单的项目：BBS-无支撑坐姿）。一个项目（BBS站在一只脚）不适合，但是，删除轻微受影响的人的措施和模型统计。FBAM表现出较高的个人可靠性（0.9）和6人（106%）不符合预期的反应模式。FBAM将参与者分为4个统计学上不同的阶层，没有下限或上限效应。FBAM是一个跨功能任务连续体的平衡能力的一维度量。评分量表的特点，项目层次结构，项目和人的配合，和人的分离支持FBAM的测量特性的人与慢性中风。未来的工作应该调查测量较少的项目，是否FBAM解决障碍，在临床实践中采用标准化的平衡措施。
To determine whether the measurement properties of an instrument that combines items from the Berg Balance Scale (BBS) and the Functional Gait Assessment (FGA) called the Functional Balance Ability Measure (FBAM) supports measuring balance across the functional mobility spectrum. Retrospective cohort. Item-level data were from an archival research database. Ambulatory individuals (N=93, BBS=50 [29-56], FGA=16 [0-30], Fugl-Meyer Assessment of Lower Extremities=27 [14-34], self-selected walking speed=0.4±0.2 m/s, mean age ± SD, 61.7±11.3y; 30.1% female) with chronic stroke (≥6 months). Not applicable. Unidimensionality was evaluated with a principal components analysis (PCA) of residuals. FBAM rating-scale characteristics, item hierarchy, item and person fit, and person separation were investigated using the Andrich Rating Scale Model. PCA findings indicate the FBAM is sufficiently unidimensional. Rating scale structure was appropriate without modifying the original BBS and FGA scoring systems. Item hierarchy aligned with clinical and theoretical predictions (hardest item: FGA-gait with narrow base of support, easiest item: BBS-sitting unsupported). One item (BBS-standing on 1 foot) misfit, however, removal marginally affected person measures and model statistics. The FBAM demonstrated high person reliability (0.9) and 6 people (∼6%) misfit the expected response pattern. The FBAM separated participants into 4 statistically distinct strata, without a floor or ceiling effect. The FBAM is a unidimensional measure for balance ability across a continuum of functional tasks. Rating-scale characteristics, item hierarchy, item and person fit, and person separation support the FBAM's measurement properties in persons with chronic stroke. Future work should investigate measurement with fewer items and whether the FBAM addresses barriers to adoption of standardized balance measures in clinical practice.
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