运用心理计量学技术改进平衡评估系统测试：mini-BESTest。
Using psychometric techniques to improve the Balance Evaluation Systems Test: the mini-BESTest.
机构信息
Unit of Occupational Rehabilitation and Ergonomics, Salvatore Maugeri Foundation, Clinica del Lavoro e della Riabilitazione, IRCCS, Veruno, Italy.
出版信息
J Rehabil Med. 2010 Apr;42(4):323-31. doi: 10.2340/16501977-0537.
OBJECTIVE
To improve, with the aid of psychometric analysis, the Balance Evaluation Systems Test (BESTest), a tool designed to analyse several postural control systems that may contribute to poor functional balance in adults.
METHODS
Performance of the BESTest was examined in a convenience sample of 115 consecutive adult patients with diverse neurological diagnoses and disease severity, referred to rehabilitation for balance disorders. Factor (both explorative and confirmatory) and Rasch analysis were used to process the data in order to produce a new, reduced and coherent balance measurement tool.
RESULTS
Factor analysis selected 24 out of the 36 original BESTest items likely to represent the unidimensional construct of "dynamic balance". Rasch analysis was then used to: (i) improve the rating categories, and (ii) delete 10 items (misfitting or showing local dependency). The model consisting of the remaining 14 tasks was verified with confirmatory factor analysis to meet the stringent requirements of modern measurement.
CONCLUSION
The new 14-item scale (dubbed mini-BESTest) focuses on dynamic balance, can be conducted in 10-15 min, and contains items belonging evenly to 4 of the 6 sections from the original BESTest. Further studies are needed to confirm the usefulness of the mini-BESTest in clinical settings.
目的
借助心理测量学分析，改进平衡评估系统测试（BESTest），该工具旨在分析可能导致成年人功能性平衡不良的多个姿势控制系统。
方法
在一个便利的样本中，对 115 名患有不同神经诊断和疾病严重程度的成年患者进行了 BESTest 表现的检查，这些患者因平衡障碍而被转诊至康复科。使用因子（探索性和验证性）和 Rasch 分析来处理数据，以生成一种新的、简化的、一致的平衡测量工具。
结果
因子分析从 36 个原始 BESTest 项目中选择了 24 个可能代表“动态平衡”单一结构的项目。然后，Rasch 分析用于：（i）改进评分类别，以及（ii）删除 10 个项目（拟合不良或显示局部依赖性）。由其余 14 项任务组成的模型通过验证性因子分析来验证符合现代测量的严格要求。
结论
新的 14 项量表（称为迷你 BESTest）侧重于动态平衡，可在 10-15 分钟内完成，包含来自原始 BESTest 的 6 个部分中的 4 个部分的项目。还需要进一步的研究来确认迷你 BESTest 在临床环境中的有用性。
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