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Evaluation of the reliability and validity for X16 balance testing scale for the elderly

机译：X16老年人平衡测试量表的信度和效度评估

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Balance performance is considered as an indicator of functional status in the elderly, a large scale population screening and evaluation in the community context followed by proper interventions would be of great significance at public health level. However, there has been no suitable balance testing scale available for large scale studies in the unique community context of urban China. A balance scale named X16 balance testing scale was developed, which was composed of 3 domains and 16 items. A total of 1985 functionally independent and active community-dwelling elderly adults’ balance abilities were tested using the X16 scale. The internal consistency, split-half reliability, content validity, construct validity, discriminant validity of X16 balance testing scale were evaluated. Factor analysis was performed to identify alternative factor structure. The Eigenvalues of factors 1, 2, and 3 were 8.53, 1.79, and 1.21, respectively, and their cumulative contribution to the total variance reached 72.0%. These 3 factors mainly represented domains static balance, postural stability, and dynamic balance. The Cronbach alpha coefficient for the scale was 0.933. The Spearman correlation coefficients between items and its corresponding domains were ranged from 0.538 to 0.964. The correlation coefficients between each item and its corresponding domain were higher than the coefficients between this item and other domains. With the increase of age, the scores of balance performance, domains static balance, postural stability, and dynamic balance in the elderly declined gradually (P?
机译：平衡表现被认为是老年人功能状态的指标，在​​社区范围内进行大规模的人群筛查和评估，然后进行适当的干预对公共卫生水平具有重要意义。但是，在中国城市独特的社区环境中，尚没有合适的平衡测试量表可用于大规模研究。开发了一种由X3领域和16个项目组成的X16平衡测试量表。使用X16量表测试了总共1985名功能独立且活跃的社区居民老年人的平衡能力。评价了X16平衡测试量表的内部一致性，半信度，内容效度，结构效度，判别效度。进行因子分析以鉴定替代因子结构。因子1、2和3的特征值分别为8.53、1.79和1.21，它们对总方差的累加贡献达到72.0％。这三个因素主要代表领域的静态平衡，姿势稳定性和动态平衡。该量表的Cronbachα系数为0.933。项目及其对应域之间的Spearman相关系数介于0.538至0.964之间。每个项目与其对应域之间的相关系数高于该项目与其他域之间的相关系数。随着年龄的增长，老年人的平衡表现，区域静态平衡，姿势稳定性和动态平衡得分逐渐下降（P <0.001）。随着年龄的增长，具有完整平衡能力的老年人比例逐渐下降（P <0.001）。 X16天平测试秤的可靠性和有效性均足够且可以接受。由于其简单，快速的使用特性，特别是在社区环境和大规模筛查中，可以重复和常规使用。

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