The Frail’BESTest was developed in order to include frail older adults when they are using the BESTest. Recently, psychometrics properties (internal coherence, systems usefulness, complementarity and inter-rater reliability) of the Frail’BESTest were tested. To complete these analyses, this study will aim the assessment of its concurrent validity, responsiveness, predictive validity on falls occurrence, and slower walkers detection. The correlation between the Frail’BESTest and the Gait Speed Test permitted to assess concurrent validity. The variation between the initial test score and the score obtained after the completion of a rehabilitation program was used to evaluate responsiveness with MANOVA analysis and standard response mean (SRM) calculation. Predictive validity was assessed with receiver-operating characteristic curves and area under the curve (AUC) analysis regarding falls occurrence. Slower walkers detection thresholds were computed by receiver-operating characteristic curves for the Frail’BESTest and the Tinetti test. The concurrent validity of the test was good (r = 0.74; p < 0.001). The Standard Error of measurement was at 2.81 points and the Minimal Detectable Change at 7.79 points for the total score of the Frail’BESTest. The SRM was at 0.41 for the Tinetti test and 0.56 for the Frail’BESTest. The AUC, computed according to fall occurrence, was at 0.71 for the Gait Speed test, 0.673 for the Tinetti test and 0.693 for the Frail’BESTest. Both the Tinetti (AUC = 0.87) and the Frail’BESTest (AUC = 0.88) were found suitable for tracking slower walkers. Concurrent validity and responsiveness of the Frail’BESTest were good. As for the Tinetti and the Frail’BESTest, they were unable to predict efficiently falls occurrence in the tested sample. The Frail’BESTest seems enough sensitive to spot the slower walkers efficiently, using a 15/20 threshold method. The Frail’BESTest was found to be a valid and responsive clinical test, therefore it can be recommended as an outcome measure in clinical practice.

中文翻译：

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The Frail'BESTest：针对体弱老年人的“平衡评估系统测试”的改编版；跌倒预测和较慢步行者检测的并发有效性、响应性、有效性


开发 Frail'BESTest 的目的是为了将使用 BESTest 的虚弱老年人纳入其中。最近，对 Frail'BESTest 的心理测量特性（内部一致性、系统有用性、互补性和评估者间可靠性）进行了测试。为了完成这些分析，本研究将旨在评估其并发有效性、响应性、跌倒发生的预测有效性和慢步行者检测。 Frail'BESTest 和步态速度测试之间的相关性允许评估并发有效性。初始测试分数与完成康复计划后获得的分数之间的变化用于通过多元方差分析和标准反应平均值（SRM）计算来评估反应性。通过接受者操作特征曲线和关于跌倒发生的曲线下面积（AUC）分析来评估预测有效性。较慢的步行者检测阈值是通过 Frail'BESTest 和 Tinetti 测试的接收者操作特征曲线计算的。测试的同时有效性良好（r = 0.74；p < 0.001）。 Frail'BESTest 总分的测量标准误差为 2.81 分，最小可检测变化为 7.79 分。 Tinetti 测试的 SRM 为 0.41，Frail'BESTest 的 SRM 为 0.56。根据跌倒发生情况计算的 AUC，步态速度测试为 0.71，Tinetti 测试为 0.673，Frail'BESTest 为 0.693。 Tinetti (AUC = 0.87) 和 Frail'BESTest (AUC = 0.88) 都适合跟踪较慢的步行者。 Frail'BESTest 的并发有效性和响应性良好。至于 Tinetti 和 Frail'BESTest，他们无法有效预测测试样本中跌倒的发生情况。 Frail'BESTest 似乎足够灵敏，可以使用 15/20 阈值方法有效地发现较慢的步行者。 Frail'BESTest 被认为是一种有效且反应灵敏的临床测试，因此可以推荐它作为临床实践中的结果衡量标准。